It’s a common question when people are looking to have a roof repaired or replaced. After all, if you had your choice of a roof lasting 15 years or 30 years or more, you would want to know, wouldn’t you?
How long does a roof normally last?
An average roof is replaced every 20-25 years.
Because the roof is the top covering of any building and responsible for keeping the elements of weather outside the building, and a consistent, comfortable environment inside, it is probably the most important (and vulnerable), part of what is known as the ‘building envelope’.
Climate and environmental factors are important to the lifespan of any roof. Roofs that are exposed to tremendous heat or cold tend to have shorter lifespans. In commercial or industrial areas, chemicals, exhausts and residues from the manufacturing process can break down most types of roofing materials more quickly than just sun, wind and weather.
A roof can only last as long as it is maintained. Poorly maintained roofs go into decline much, much sooner.
Building and roof designs do play a part in the lifespan of a roof. Flat roofs, most commonly used on commercial or industrial buildings typically have a shorter lifespan simply because of the choice of materials available.
Some of the more common roofing materials generally have the following lifespans:
- Wood shakes and shingles: 15 to 20 years
- Asphalt shingles: 10 to 30 years
- Foam: 25+ years
- Built-Up roofs: 25-30 years
- Single-Ply: 30+ years
- Metal or steel: 50+ years
- Slate: 50+ years
- Tile and concrete: 50+ years
The average roof will last around 20 years, though properly maintained roofs can last far longer than their warranties suggest.
If you have any questions about your specific roof, give DC Roofing a call today at (520) 979-9095