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Pros and Cons to Coating Your Commercial Roof
Advantages:
- Reduces heat transfer into the building
- Decreases thermal expansion and contraction of the roof membrane
- Helps decrease the chance of leaks
- Reflective coatings reduce heat energy costs
Disadvantages:
- Requires a new roof warranty
- Do not work well with ballasted or gravel roofs
- Do not always withstand ponding water
- Roof must be thoroughly cleaned and totally dry
- Foul odor
Typical Lifespans of Common Commercial Roofs
| Roofing Material | Average Lifespan |
|---|---|
| Built-Up | 10 - 15 years |
| Modified Bitumen | 15 - 20 years |
| PVC | 20 - 35 years |
| TPO | 20 - 30 years |
| Spray-applied coatings | 20 - 50 years |
| Spray-applied coatings | 20 - 50 years |
| Metal | 30 - 50 years |
There are a number of factors affecting the lifespan of a commercial roof, including:
- installation
- system type
- climate
- maintenance
This is why choosing the right roofing system and the right contractor to install it and maintain it is so important.
Keep reading: The Complete Commercial Roofing Guide