We know a lot more about sustainable, effective building now than we did even a short 15 years ago. A prime example is the proliferation of buildings bearing metal roofs that were constructed in the 1980’s and 90’s. Now, these buildings desperately need renovation. Metal roofs experience excessive movement due to heat cycling (expansion with warming and contraction with cooling). This stresses the seams of the roof, fatigues fasteners and causes seals and flashes to fail. What’s more, most roof insulation systems from the 80’s are out-of-date to begin with.
Basically, they are ineffective, faulty and prone to leakage, but doing away with them altogether is both costly and wasteful. Elastomeric coatings, used with or without spray foam roofing systems, offer a dynamic solution set that give outdated roof systems a future.