How To Apply Elastomeric Roof Coating

Elastomeric acrylic coating system are an economical alternative to a costly re-roof. Advances in polymer chemistry have resulted in elastomeric coatings that provide lasting restoration, retrofit or repair. This liquid applied membrane completely bonds to the surface as it dries, yet remains elastomeric. It stretches as the substrate moves. And then returns to its original shape without deformation.

Elastomeric coatings are versatile, easy to apply and repair lightweight and watertight. When you use a quality product like APOC, Henry or others which are manufactured with strict quality control, you can count on quality that's consistent batch to batch. Many are also energy star rated and independently tested to EPA guidelines, with results of initial solar reflective values up to 86%, and three year aged values up to 72%.

Professional roofing contractors favor acrylic coatings for long-term performance and ease of application without the use of fabrics. Before making use of a new roof coating, a field representatives will walk the roof with you and will provide warranty inspections for system warranted projects. Then the following steps will be followed: power wash, prime, flash, and finish.

You can go here to learn more about Liquid Applied Membrane Roofs

Power washing the roof

Before power-washing, prep and clean the roof surface. Start by removing all loose coatings, old brittle patching materials, and soft or active roof cements. Any areas with excessive rust should be cleaned with a wire brush. If heavy debris or loose dirt exists, broom the surface.

Now you are ready to power wash, either with water alone or using a mixture of specifically designed roof cleaning solution.

This step effectively removes existing oil, dirt or grease that would adversely affect the bonding of acrylic coatings.

For a roof without gutters, remember to wet the side of the building first, to prevent cleaning runoff from discoloring the exterior. After completing the power washing, visually inspect the exterior walls and rinse as needed.

Prime the roof surface

Apply a metal roof primer to the clean dry roof. A primer is required for coating rusted or bare metal, and for all projects obtaining a labor and material system warranty.

Check weather conditions first. Do not apply if weather conditions will not permit complete cure before rain, dew or freezing temperatures.

Use a modified acrylic primer exhibiting excellent adhesion and corrosion resistance which provides re-coat ability and durability in a single component primer. The primer totally encapsulates existing rust and inhibits the development of new rust, while it maximizes the adhesion of your elastomeric coating.

A typical primer will be applied at a rate of one half gallon per 100 square feet. A brush is suitable for details and flashings. A roller may be used for coating small flat areas. For large areas, airless spray equipment is recommended using a tip size of .015 to .027 inch diameter, with a wide angle fan pattern.

Thoroughly mix the primer prior to application. After installation, there should be no visible rust. If more product is required to cover rust, additional coats should not exceed one half gallon per 100 square feet. Applying a primer at higher coverage rates in one coat can result in surface splitting or blistering, due to trapped moisture. A 12 hour cure time is recommended between coats and multiple coats should always be applied within 72 hours of each coat. This minimizes the chance of contamination that would require additional cleaning. Cool temperatures and high humidity are factors that may retard curing, which can result in longer cure times between coats.

For application in high temperatures above 90 degrees Fahrenheit, it is recommended that applications be done in multiple thin coats to prevent trapped moisture problems that can cause splitting and blistering.


When the primer has cured apply flashing grade to seal fasteners, panel seams, penetrations and end lap joints. But remember, do not apply if weather conditions will not permit complete cure before rain, dew or freezing temperatures.

Apply by brush or extrude, and cover with a minimum of 1/8 inch thick coat. Make sure all vents and other metal flanges are properly secured to the roof deck before applying. Areas that need a build-up of product thicker than an eighth of an inch should be applied in multiple coats to prevent trapping of moisture, which could cause splitting or blistering.

When working on open seams and end lap joints, make sure to back brush. Flashing grade sealant will skin over in approximately two hours, depending on temperature and humidity. If additional product is required a minimum of 24 hours is recommended between coats.

Finish - Applying the elastomeric coating to your roof

The final step is to coat with your quality elastomeric roof coating. Again do not apply if weather conditions will not permit complete cure before rain, dew or freezing temperatures.

Apply by brush for details and flashings and a roller may be used for coating small flat areas. For large areas, airless spray equipment is recommended using a tip size of .025 to .035 inch diameter, with a wide angle fan pattern.

Thoroughly mix your coating material prior to application. Apply the first coat at a rate of one and one half gallons per 100 square feet. Coating thickness can be tested using a wet mil thickness gauge. The coating should be 24 wet mils thick per coat. When dry, you will achieve a dry mil thickness of 13.2 mils per coat.

Allow approximately 12 hours curing time between coats, or enough time so that the product is sufficiently dry that foot traffic will not damage the coating.

Apply the second coat at a rate of 1 1/2 gallons per 100 square feet. The finished roof is now coated with a total of three gallons per 100 square feet and is ready to deliver years of trusted performance.

Elastomeric Coating: Tried And Tested Tips


okay so when it comes to elastomeric coding there's a lot of different options out there the one we like here at twin home experts that's truly been tested with all of the jobs that we've done is going to be the sure coat systems now you've seen a lot of our videos to do elastomeric coatings on roofs while this one is their structure coat specifically made for stucco one of the products that we really like using first to prep is going to be the sure scrub this is basically soap go in pressure wash the surface of the old structure de-grease remove and get a better application but what I love about sugar coat systems is the fact that the staff if there's questions the support is right there at your fingertips you simply dial them up someone's gonna answer they're gonna take care of your issues if there's any issues on the job site you're going to get that support unlike other competitor elastomeric coating manufacturers the other benefit with this here and it actually shows it right here it's 80 percent eighty six percent thermal emittance you've got protectants again heat saves money and energy protects against moisture the building that we're doing right behind us right now had moisture issues we've actually tested this out on the front of the building which had a lot of exposure to rain it stopped everything it does a great job with them what I wanted to offer you now is what does sure coat cost well a five gallon bucket of shirt coat is gonna be around two hundred to two hundred and ten dollars for five gallons it's gonna cover about a hundred and thirty-five square feet it does give you two coats with that coverage that I just expressed you sure scrub about thirty dollars for for this size right here then you got to consider your rollers and paintbrushes and all the plastic and tapes got to factor that in as well let's go ahead and take you to the building here and we'll show you some tips and tricks that way so one of the tips that you might want to consider before you start applying elastomeric coding is to really do a detail job in protecting the windows the pathway such as sidewalks the staircase you can just see right above me the rails as well as the pathway here this is six six mil the reason why we use six mil here is because it does offer not only protection but it's not going to tear and rip if it's a high-traffic area you might want to consider more of a painters drop cloth so that way nobody slips in this case we're just taking care of this today so this will be removed again strong tape so good sticky tape on some of these areas is a must if not the stuffs just gonna peel apart so again windows doors stairs floors you got to protect all that before you start applying it the other thing is is if you're going to run your elastomeric coating on your walls you want to make sure that you excavate down into the ground and bring the elastomeric coating into the soil the reason for that is because if the soil is is ends up at this elevation right here and you just painted it to this point you're going to end up getting some more water and throughs and going into the stucco and that starts to absorb as you can see here this doesn't have a weap screen so again this is the Elliott you really want to add a lot more elastomeric coating may be even consider doing three coats and these lower areas here just offers a little bit more protection alright let's go ahead now and go to some areas in the front of the building that are tall walls we'll show you what that looks like in respect to painting alright folks so here we are in front of the building with a 20-foot Eve here so what we like doing is we use about a four foot ladder and then the long 15 foot poles and as you can see makes it safe it's pretty easy to paint all right folks so now if you just pay attention to the roller you can see right here coming a little bit closer as you can see the hairs of the roller are not sticking out when it's flattened out like this this is a sign that you need to do another dip of the elastomeric all the way you want to dip your roller into a five-gallon bucket is just like this all right folks so one of the steps that you need to take before you start rolling on the walls is do all your cuttings around the windows doors in this case it's a mailbox so it's basically a four inch paintbrush and basically you're just gonna cut in all the way around windows and doors what this will allow you to do is be able to roll on the elastomeric coating be a lot more effective in covering everything so cutting in is very very important to all your windows and doors alright folks well hopefully you like this video

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flat roof coated with white elastomeric roof coating in Tucson

Why Tucson Loves White Coated Roofs

There are a lot of reasons why people, especially home owners in Arizona, choose to go with a white, reflective elastomeric roof coating for their homes. Let's take a look at some of their reasons and the benefits of using this roof coating.

First, their reflective coatings that are rolled or sprayed onto the roof surface to protect from wear and tear caused by the sun's heat and UV rays. When applied white roof coatings provide a highly reflective seamless solar barrier that increases the life span of a roof. It protects it from breaking down which can lead to moisture penetration and damaging leaks. White roof coatings are also energy-saving and can reduce summer cooling costs by up to 40% by reflecting the sunlight and the resulting heat. These coatings are recommended for flat or metal roofs however they are not recommended for use on PVC, sheet roofing, or shingles of any kind. They're also not recommended for use over plywood walking decks, gravel, uncoated polyurethane foam or rubber.

Surface preparation is very important and there are three steps to prepare the roof.

Step one is you need clean warm and dry conditions. You need a clean surface with no dust or debris. You need dry whether for a couple of days, meaning there's no rain in forecast for 48 hours. And you need temperatures above 50 degrees for at least two days.

If you go up on your roof and can see a potential leak area in the roof, your first step is you want to put the white silicone sealant down nice and thick. You want to put about an eighth inch thick. This sealant comes in both tubes and gallons. Once you put it down over the leak you want to get a little plastic trowel you can find in the paint department of any big box store or hardware store. You want to cover where the potential leak areas are, and usually you want to go about an inch to two inches beyond where the leak is occurring. So that's step number one.

Step number two is you want to take your white fabric and you want embed it down into the patch. You can use your plastic trowel to push it in and again the final step is you want to cover that so you have a 3-course patch that will stand up to weather so that when the roof is doing its expansion and contraction, it holds the patch together, so the leak won't reappear.

Then when you put this patch down you should let this dry for four to five hours. It's a water based product, so that amount of time should be fine.

The next step is the asphalt primer. This is a base coat product that you put down to help the white roof coating adhere to the surface. It also helps waterproof the roof surface as well. You can simply put this down using a basic 3 knot brush. You only need to go north and south with this, and after you apply it should we draw in about six to eight hours. As far as the thickness of the material during your application, you always want to put a dime thick layer down.

How To Apply Silicone Roof Coatings Using Black Jack® Silicone


you've chosen blackjack silicon family of products a revolutionary roof coating system engineered to restore worn roofs and stop leaks for good these waterproofing products are great for reducing heat and saving energy costs across a variety of roof types step one is monitor the weather although Blackjacks silicon can be rained on within 60 minutes the roof must be completely dry prior to application do not start a project to bring it in the forecast ideal temperature for application is between 40 and 99 degrees Fahrenheit step 2 clean the roof before any product is used be sure dirt leaves and other debris are removed using a broom and pressure washer step 3 patch and repair identify any penetrations in the roof such as joints cracks fasteners skylights or roof vents applied blackjack silicone patch using a putty knife or a brush adding in a layer of reinforcing fabric for seams and transition areas use blackjack seam tape then add a layer of patch to ensure a watertight seal step 4 coat the roof you're not ready to coat your roof as the ultimate protection from the elements for asphaltic roof substrates there's an optional step to apply blackjack silicone primer to maximize adhesion and prevent bleed through to the top coating for all other substrates you can skip the primer and go straight to blackjack premium silicone roof coating be sure to mix thoroughly to ensure uniform consistency one gallon of product will cover approximately 50 square feet of roof surface so a five-gallon bucket would cover 250 square feet to determine square footage take the length of the roof multiplied by the width of the roof then divide by 50 to see how many gallons of product will be needed to complete your job apply with a nap roller using enough product to keep a thick bead of coating Israel all step 5 let it dry allowed to drive for a minimum of one hour at 40 degrees or higher before exposing the roof to water once you've coated the roof do not walk on it besides periodic maintenance your project is complete and your roof is ready to take on whatever Mother Nature has in store you can rest assured that Blackjacks 50 year warranty will keep you off the roof for a very long time should you have any additional questions please visit Black Jack coatings calm to see why black jack has been the professionals choice since 1913

The final step is the application the white roof coating. You just want to take a three-quarter nap paint roller, which you can also find in any paint department. You want to put two coats down of your white roof coating. You want to go north and south first. Again you want to go in a nice even consistency. Once you have covered north and south you want to wait about four to six hours, again depending on the humidity, and then you want to come back and go east and west.

So again it's two coats about a dime thick. You should get about a hundred square feet per gallon out of this product. Now this can also be sprayed on. A common customer question is, "if I spray it on do I have to dilute the product?" And the answer is no. The product is ready to use right out of the bucket.

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Acrylic or Silicone? Understanding the Best White Roof Coating Material for Your Arizona Home

Let's look at and consider the differences between silicon and acrylic white roof coatings made by Henry so you can make a more informed decision on which one is right for you and the roof on your home.

Both silicon and acrylic white roof coatings are popular protective and reflective coatings for flat and low sloped roofs, but the two are very different. Let's compare Henry 887 Tropi-cool 100% silicone with Henry 687 and viral white acrylic in seven different categories.

white silicone roof coating materials made by Henry

Tropi-cool 100% silicone delivers 100% waterproof protection, while a high-end acrylic such as Enviro-white acrylic is ponding water resistant up to 48 hours.

Acrylic roof coatings are not waterproof on their own not even those claiming they're siliconized or urethane-ized.

Tropi-cool 100% silicone offers a lifetime transferable warranty while Enviro-white acrylic offers a 12 year warranty.

Tropi-cool 100% silicone can be applied in as little as one coat. Enviro-white acrylic requires a minimum of two coats

Tropi-cool 100% silicone provides a 100% waterproof seal and high reflectivity to prolong roof life. Enviro-white acrylic on the other hand with its dirt pickup resistant technology reflects more over time, making it the best choice if you're more concerned with energy bill savings than waterproofing.

Tropi-cool 100% silicone creates a strong chemical bond by cross-linking silicone molecules to the existing roof surface, resulting in a 30% stronger bond compared to Enviro-white acrylic, which relies on a physical bond that sticks to the surface of the roof.

Tropi-cool 100% silicone is rain safe in 15 minutes, while in viral white acrylic means 12 hours of dry weather.

Tropi-cool 100% silicon can be applied between 35 and 120 degrees Fahrenheit, while Enviro-white acrylic should be applied between 50 and 100 degrees Fahrenheit.

When to go with Silicone Roof Coating

So to sum up Henry 887 Tropi-cool 100% silicone is your best choice if

  • You are looking for 100% waterproofing plus high reflectivity 
  • You need greater durability 
  • You want less work in something more foolproof 
  • You're concerned about adhesion 
  • You need to apply a coating in more extreme temperatures

When to go with Acrylic Roof Coating

Henry 687 Enviro-white acrylic is your best choice if:

  • You are looking for maximum reflectivity and energy savings 
  • You want the lowest product application cost, or labor is not a consideration

Make sure your roof coating projects are done right the first time

Is a flat roof house hotter than other roof types?

Modern flat roofs use innovative materials that can make them more energy efficient and cooler than older, traditional pitched roofs.

Modern flat roofs use innovative materials that can make them more energy efficient and cooler than older, traditional pitched roofs. EPDM roofing (Ethylene Propylene Diene Monomer) is very highly energy efficient. In studies at Oak Ridge National Laboratories it was found that roof temperatures can be reduced by 30 to 40 percent with EPDM. With such such significantly lower heat transfer into the home, this can be a smart choice for homeowners in warmer areas looking to reduce the demands on their air conditioners.

Learn more about the Benefits Of White Roof Coating in our other article

How to Apply Henry® Elastomeric White Roof Coatings for Energy Savings


in this Henry how-to we're going to help you extend the life of your flat or low sloped roof and help you save on your energy bills by applying a Henry elastomeric roof coating these coatings are also called white coatings cool roof coatings acrylic roof coatings or sometimes even snow roof coatings we're going to use Henry 687 enviro 8 which reflects nearly 90 percent of the sun's heat and UV rays when first applied with it's dirt pickup resistance technology it will still reflect 80 percent as it ages and can save you more than 4600 dollars over the life of the coating before we get started here are the tools and materials you will need for this job of course the Henry 687 enviro white pressure washer or hose with a high-pressure nozzle a non filming detergent such as tsp or tsp substitute scrub brush a leaf blower or broom henry 296 elasto tape repair fabric and henry 289 white roofing elastomeric sealant you'll need this to repair any cracks or holes if you have a metal roof a wire brush to remove rust paint sprayer or deep-pile paint roller with a wooden handle and metal threats paint brushes a drill and mixing paddle so the first step is going to be cleaning your roof you want to make sure that all the drains and gutters are clear before applying the water clean your roof using the detergent and the pressure washer or hose use a stiff bristle brush or broom with additional water and detergent to remove any stubborn dirt grease algae or moss give the roof of final rinse and allow the roof to dry completely using a leaf blower or broom clean any remaining dust dirt and debris the next step is going to be prepping your roof you want to closely inspect for any repairs that need to be made carefully inspect the roof for splits cracks blisters deteriorated flashing or cracked metal edging on metal roofs tighten and seal fasteners prior to applying sealant for best results in bed henry 296 elasto tape repair fabric between two heavy coats of henry 289 white roofing sealant depending on the depth of the repair allow 2 to 24 hours for them to dry and now we're ready to apply the first coat of Henry and viral white envira is ready to use and should not be thinned make sure you mix it well before the use and make sure you're applying it to a warm roof but not too hot to touch apply coatings evenly taking long light strokes in one direction going north and south or east and west apply second coat at a right angle to the first coat so if you went north and south the first time go east and west the second schedule your work so that the coating has two hours to dry before nightfall make sure your elastomeric roof coating projects are done right the first time with Henry and see why we are the number one choice of professionals

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a Tucson roof benefiting from white roof coating

Today we are looking at liquid applied seamless membranes that seal out the elements. With materials engineered for the restoration of most roof substrates, GAF Topcoat resurfacing products are your solution for long term, total roof protection.

Less expensive than a new roof or retrofit, Topcoat systems offer a wide range of warranty options, with up to 20 year full labor and materials protection.

Replacing your old metal roof with a new one can be twice as expensive, and if left unprotected the new roof will eventually leak, just like the old one. Compared to other roofing systems, Topcoat goes on in a fraction of the time, and at a fraction of the cost.

Topcoat restoration products are not just for metal roofs, they also provide a low cost resurfacing alternative for most low sloped asphalt and for single ply roofs.

By resurfacing an existing roof system you can

  • Extend the life of your roof and avoid the inconvenience and cost of a full roof replacement
  • Avoid costly disposal and business disruption costs
  • Gain the environmental and energy efficiency advantages of a highly reflective UV resistant roof membrane
  • Add years to the life of your roofing system at a fraction of the cost of replacement

GAF Topcoat products can save you money by decreasing your cooling costs. The high reflectivity of a Topcoat membranes white surface membrane can greatly reduce rooftop surface temperatures on roofs by as much as 50 degrees Fahrenheit.

Topcoat products meet the stringent requirements and are qualified by today's most recognized energy efficiency programs.

Elastomeric and acrylic membranes and coatings cure chemically, a process accelerated and enhanced by the UV rays of the sun. Even on a cloudy day in Seattle, Topcoat can greatly reduce rooftop surface temperatures.

The difference in the thermal heat load between a section of EPDM roof that is not treated with Topcoat and a metal roofing area that is can be very significant. Formulation is one of the most important elements of Topcoats performance. Also, solids content and polymer quality are of critical importance for durability and longevity.

Topcoat membrane is highly durable, will stand up to the harshest weather conditions, and is resistant to most chemical attacks. Topcoat is tough because it has a higher percentage of solids than other liquid applied systems. The binders used to produce all GAF resurfacing products are the best non-chalking grade available. Topcoats water-based products use high quality flame-retardant ingredients, and achieve UL class A and FM class 1 approvals. Colors can be added for a custom tint, and unlike the copycats the pigmented Topcoats product does not contain cheap extenders such as clay.

The polymer is the backbone of any liquid applied product. Low quality polymers will break down from the sun's ultraviolet rays. As the polymer erodes in a low quality product, the powder is exposed and washes away. The result is chalking. Topcoats high quality polymer resists chalking. Extreme temperature changes can cause significant expansion and contraction of metal roof panels. The Topcoat system is flexible, from minus thirty degrees Fahrenheit to 180 degrees Fahrenheit.

Installing a Topcoat roofing system is as simple as prep, seal and coat. The roof must be clean and in sound condition to receive the liquid membrane.

You might check our other article about Best Roof Coating For Flat Roof

Benefits of Roof Coating Systems


Roof coatings are a great way to extend the life of your low slope or flat roof they protect the roof from wind rain and Sun that can cause a roof to dry out and crack and can provide energy savings by lowering the temperature of the roof before you coat the roof replace any wet insulation and address any ponding water areas once the roof is sound you're ready for the roof mate system the roof mate system includes all the components needed to restore the roof the system includes roof mate base coat top coat butter grade flashing fabric and seam tape the roof mate coating system can be used directly on most metal asphaltic and single ply roofs restoring the roof with coating is a three-stage process prep seal and coat the prep stage is where you clean and prime where needed pressure washing the roof is recommended taking care not to force any water into the scene once the roof is clean completely dry and free of any debris climbers should be applied GAF has two primers that can be used based on the roof type acryl x400 primer can be used on rusty metal concrete masonry and wood SP primer is a must for single ply loops SP primer on TPO and PVC membranes promote adhesion and prevent plasticizers from staining the coating once cleaned and primed the next stage is to seal the roof it's important to seal penetrations curbs and seams since most roof leaks occur at these locations roof mate scene tape should be used on all of the scenes on a metal roof roof makes butter grade flashing should be used to fill small voids such as alligatored areas on asphaltic roof roof mate butter grade flashing and fabrics should be used for all penetrations and curbs and should also be used for loose scenes on asphaltic and single ply roofs once the prep and seal stages are complete you are ready to coat the roof the roof is coated in two steps each coat is applied at one to one and a half gallons per 100 square feet of roof using a sprayer roller or brush first apply roof mate base coat and allow approximately 24 hours for drying this base coat is light grey in color and contains a bleed blocker to prevent asphalt oil greetings in the white topcoat for the final step roof mate topcoat should be applied perpendicular to the base coat to ensure even coverage once this coat is finished you are done so that's the roofs made coating system a simple and effective professional coating system that will give you years of protection and energy benefit

Step 1 - Prep the Roof Surface

Inspect the roof looking for required repairs such as minor sheet metal repairs. All loose or missing fasteners are re-secured or replaced. The roof is then power washed with water at 3,000 psi and allowed to dry. Sheet metal crickets are installed behind all rooftop units. All rust is treated with Topcoat mp 300 rust inhibitor. Areas of residual asphalt are primed with Topcoat mb+.

Step 2 - Seal Protrusions

Horizontal seams or end laps are sealed with a six inch width of Topcoat flashing grade, reinforced with Topcoat flashing fabric or Topcoats liquid fabric product without reinforcement when conditions apply. All vertical seams are sealed with Topcoat flashing grade. All detail areas including curbs, ridges, pipe penetrations, rakes and skylight perimeters are sealed with Topcoat flashing grade, or Topcoat flex seal, and Topcoat flashing fabric. Fasteners are encapsulated in Topcoat fastener grade or flex seal. Where present fiberglass skylights may also be restored with Topcoat skylight after they have been sealed.

At this point on guaranteed projects the roof receives its first mandatory inspection by a GAF field service representative.

Step 3 - Coat

The base coat of the Topcoat membrane is applied to the entire roof area. The finished coat of the Topcoat membrane, typically white, is installed over the base coat. Now the membrane is fully coated and sealed. The second GAF inspection is performed, and the GAF Topcoat system guarantee is issued.

Existing low sloped roofing systems can also be restored. Even an aged, smooth surface asphalt roof that has already been in place for over 30 years. Even if a lack of maintenance has led to leaks in a few areas. Again follow the basic steps of restoration. Prep seal and coat.

A moisture scan identifies wet or damaged areas. Those areas get replaced as part of the prep phase of a restoration. This step is of critical importance and a required element for GAF guarantee coverage. Without replacing wet roof areas, a coating will blister and peel away from the surface.

Next all the penetrations must get sealed with Topcoat flex seal and Topcoat flashing fabric. Then the roof gets coated with two coats of Topcoat mv+. The temperature difference can be immediately noticeable.

Topcoat products can also help assure watertight system performance when used as part of a yearly maintenance program. High quality sealants membranes and coatings can reduce thermal stress, seal open laps, repair aged caulk, and seal metal flashings. GAF is so committed to the importance of maintenance that they extend the duration of their membranes guarantees up to 25% when a certified maintenance professional maintains your newly installed roof. And including Topcoat products in your maintenance program helps assure the vulnerable areas of your system are properly maintained.

Join the growing numbers of industry leaders who are protecting their buildings with Topcoat. Take the first step in restoring your most valuable asset by contacting a licensed contractor in your area to help you determine which Topcoat system is right for your roof.

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flat roof coated with white elastomeric roof coating in Tucson

Roof Coating Specialists

In hot weather climates with a lot of flat roofs like in Tucson as well as the rest of Arizona, you hear a lot about roof coating, especially elastomeric cool roof reflective coatings (or some combination of those terms).  This material is exremely popular in the roofing industry and has many benefits worth considering.

When you hear the term elastomeric, think elastic - it can stretch and contract back to its original shape.  This is a great quality to have in roofing material, especially in the desert where the temperature fluctuations can vary so greatly.  This type of material comes in liquid, but as it is applied to a roof surface, it creates what is known as a monolithic roofing membrane, meaning it’s a single entity as it binds to itself and the roof, making a watertight seal against moisture (when properly applied). 

One of the variables that determine whether you get a true, single waterproof seal has to do with how the material is applied. Another factor in its water resistance is the quality of the material itself.  

Quality elastomeric material such as APOC 252 applied with a ¾ in nap roller, followed by a second coat once it’s cured, will give your roof a solid seal, and you don't need to put down primer coat first. If you use the bright reflective white, you will reduce the heat absorbed by your roof and into your home.  Studies have shown that cool roof coatings can lower rooftop temperatures and reduce air conditioning bills.  See this video for what  difference it can make

Benefits of Elastomeric Roof Coating in Arizona


okay we want to show the comparison with the coating the elastomeric coating versus the non coating this temperature is 95 degrees on the heating unit that has no elastomeric on it and if we go down to the ductwork which I just did 46 degrees a huge difference in in comparison so that means all of your cold air the air conditioning is now going to be insulated even more than what the ductwork has so in the middle of the summer when this is the case this ductwork won't maybe a hundred degrees versus 150 degrees makes a huge difference for your heating bill and after the roof the difference the roof let's go over here so here before we coat the roof the temperatures about 85 more or less that's on the on the surface that's not been coded if we go up onto the white onto the last merit it's 54 degrees big big difference and again in reflectivity as far as the heat and also the sealing process so that's why that you want to get the thicker the coating of the elastomeric the better and the longer-lasting against the UV rays but also the more reflective and better insulation as well big difference and long lasting

The thing with these kinds of materials used in roof coatings is that the product and application process described above is not what every roofing contractor will do.  Some roofing companies have been known to use lower cost, lower quality products, sometimes even diluting them with water.  On top of this, they may use a spray application leaving you with the appearance of a white, cool coated roof, but giving you no more benefit than a white paint job.  So… know what materials are being used and how it is being applied before settling on a bid simply because it’s the lowest price.  

You must also distinguish between roof coatings and deck coatings.  While you are certainly able to walk on a roof surface with elastomeric roof coating without any problem, they’re not designed for high foot traffic. For an area with any kind of regular, ongoing use, whether by people, cars, bicycles, there are specifically designed materials known as deck coatings that offer more structural protection that should be used. 

It's clear to see why this relatively easy to apply material that does an excellent job waterproofing your roof is a popular option for roof repairs.  But it is not ideal for all situations.  For example, it does not work well and is not recommended to be used over existing shingles of any kind, and in particular, asphalt shingles and built-up roofs.  

rolling elastomeric roof coating on commercial roof by a Tucson roof coating specialist

In fact, the National Roofing Contractors Association’s (NRCA) director of technical services has stated "The roofing industry is aware of a number of issues that could have negative consequences for field application of silicone coatings over asphalt shingle roof systems. Anyone considering this type of application should be aware of the concerns so they can weigh them against the benefits claimed in coating product promotional materials."

One area where roof coatings may not work quite as well as initially anticipated isn’t so much a failure on the part of the material, but on the challenges of flat and low-slope roofs.  With a flat or nearly flat roof, there is a high likelihood of depressions that can cause water to ‘pond’, especially around scuppers or drains.  When subjected to ponding, coating materials may not last their full expected lifetime.  

When looking for the manufacturer's warranty on the roof coating you choose to use, check whether it covers areas of ponding.  Also, check your roof on occasion to see if you have ponding issues.  A ponding issue can be fixed more easily than a leak.  When you hire a skilled roofing contractor, they look for areas of ponding and address them as part of the job.

Roof coatings, especially reflective coatings in Arizona, are a great option for your residential roof.  It will seal up any leaks you may have when it’s properly applied, it will also extend the life of your roof by reducing the transfer of heat into your home, thereby reducing the load on your air conditioner.  The reflective, heat reducing properties also reduces what is known as ‘thermal shock’; the expansion and contraction of your roof which helps extend the lifetime of your roof.  

elastomeric roof coating applied by the Tucson roof experts at DC Roofing

A properly applied roof coating can last up to 10 years or more, depending on the quality of the material and the thickness and method of application.  When the roof coating degrades, as everything will over time, especially when subjected to the brutal heat of Arizona summers, you can apply a fresh coat over the top of the existing coat, re-sealing and regaining the benefits that may have been lost over time.

When it comes to your Tucson roof coating, there can be confusion by consumers between an elastomeric roof coating specialist and rubberized roof coatings. Elastomeric is simply a generic term for “rubber-like” roof coatings, so don't let it throw you!

Coating a Roof - APOC Shades Of Green


these roof restoration experts are dedicated to creating long-lasting structures while conserving energy and protecting our environment you've noticed your monthly electric bills keep rising Americans are using record amounts of electricity and paying record high prices today we're going to look at the problem and a solution that works on almost any kind of building cool roofing buildings use approximately forty percent of all the energy consumed in the US of a third of all the energy used by buildings can be ascribed to the energy efficiency of the roofing systems because the surface of a cool roof is highly reflective the surface of the roof remains cool the roof will last longer second benefit is less energy from the roof is being transferred into the building and the air conditioning equipment for that building runs less cool roof coatings were developed to reduce energy usage in a building by reflecting and emitting heat what makes a roof coating good these coatings have to be stronger they have to stretch more they have to be more resistant to UV and they have to be resistant to washing away through erosion cool roofs save money for homeowners and for businesses when the Sun is between 100 115 degrees you need something reflect off your roof if you do not do that you're going to feel the heat inside your living space but also your air conditioning will have to work twice as hard to try to cool off your area inside if you don't use white roof coatings on your roof eventually you would have to replace the roof after a certain time they work really well for retail for office buildings you don't have that the odors associated with hot asphalt built up roofing you'll see how cool roofs help cut your monthly electric bills and make roofs and air conditioners last longer as a bonus cool roofs make our world cleaner and greener by reducing global warming improving our air quality and cutting landfill waste besides impacting just a single bill cool roofs also act communities temperatures within the urban center of the city and to be much much warmer than those in the surrounding communities this phenomenon is called the urban heat island if you take 100 cities change every energy absorbing surface in those cities now you can talk about reducing the global temperature which would have an offset on global climate change as a building owner we save money by installing a cool roof because we're utilizing the existing roof system and applying a system onto it that elongates it it's useful life at the end of that useful life you have several options one would be to tear off that roof and replace it with a new roof fortunately today we have a coding restoration system which can actually extend the life of that roof the net effect or customer and many times is he saving money on his cooling costs he'll make a more comfortable work environment as you're reducing surface temperature some you know 60 70 degrees one company that has taken the lead in promoting cool roofs and energy savings is a POC the division of Gardner industries a POC has always been the industry leader we spent significant resources maintaining the highest quality control standards in the industry we continually look to improve our company through the implementation of new technology as well as improving our operational efficiencies lastly we have the number one research and development program in the industry we've recently developed and launched the highest-rated independently tested and certified cool roof coating manufactured in the world a POC is a company that has made a great investment in research and development for as you may imagine there are a vast number of materials if it can be used to make coatings they are also changing on a day to day basis as well which means that you need to do a good deal of research and development in order to keep up with changing raw materials but also to continuously improve your coatings and make them some of the highest reflecting and emitting coatings in the industry in supplying white roof coatings there are many markets that we serve we serve residential customers through the sale of our coatings through big box and retail stores we also serve many contractors through larger building supply houses and roofing supply houses that sell these products directly to contractors who would apply them on commercial buildings apoc recently partnered with the city of New York Mayor Michael Bloomberg and Vice President Al Gore and promoting cool roofs throughout the city on a hot summer day the temperature on a heat reflective cool roof can be as much as 60 degrees Fahrenheit lower than on a dark surfaced roof the internal temperature on the top floor of a building can be 10 to 20 degrees cooler and that translates into substantial savings on the cost of air conditioning we're building owners saving as much as fifty percent in a one-story building and ten percent and a five-story building because they less stressed by extreme heat cool roofs last five to ten years longer air conditioning units last longer to all of which saves building owners money actions that help to solve the climate crisis also have found economic benefits putting people to work saving on energy costs making our buildings and our economy more efficient one of our clients is in a distribution building of 130,000 square feet and they were complaining that it was too hot in the summertime so we applied the apoc product and the following winter they're complaining it was too cold

Polyurethane and other roof coatings

As you can see, roof coatings can be beneficial to your roof whether you currently have acrylic, metal, modified bitumen over your head. Polyurethane foam and other types of product used for roof coatings such as EPDM rubber (ethylene propylene diene monomer) can provide you protection against all kinds of wear from the wind, sun and hot weather. Having a professional roofing contractor do this kind of coating service is the best bet to ensure it's done right and that your roof will keep doing its business for you for the long haul. DC Roofing of Arizona are your roof coating experts.

We gladly service the entire, greater Tucson area, including Oro Valley, Marana, Saddlebrooke, Green Valley and Vail, AZ.  Call DC Roofing today! (520) 979-9095

Answers to Questions About Roof Coatings for Your Home

How many gallons of roof coating do I need?

A good rule of thumb is that every 100 square feet of roof equals one gallon of coating. Be sure to allow for roofing on parapet walls, garages, and porches. Take a simple sketch of your roof with dimensions to your coating dealer for help.

What is the best elastomeric roof coating?

When you talk about “the best” of anything, you’re going to get a lot of varying opinions. Without a doubt, a very good choice of elastomeric coating for your residential roof in Tucson would be APOC 252 Sunwhite Premium.

How to apply roof coating?

  • Thoroughly clean the surface of any large debris using a broom or blower, followed by pressure washing.
  • Make necessary repairs, especially around roof penetrations or low areas that creates ponding.
  • Use a ¾ inch roller to apply a thick, even coat across the roof surface. Allow to dry completely and repeat.

How much does roof coating cost?

Ballpark pricing for elastomeric coatings can range between $1.50 to $2.00 per square foot. This includes labor.

What is cool roof coating?

Cool roof coatings are a white roof coating material designed to reflect away the sun’s heat. It can have a dramatic effect on lowering the temperature of the roof, thereby reducing the energy requirements of the air conditioner to cool the building.

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