A silicone roof coating usually fails by letting go of the roof, not by wearing out. The silicone itself holds up in sun and standing water for years. What gives way is the bond underneath it, and a bond is only as good as the surface it was applied to.
Here is how it works. Silicone coating is a liquid that is rolled or sprayed onto a clean roof. It cures from the moisture in the air into a flexible, rubbery skin. That skin stretches and shrinks with the roof as the sun heats it each day, and suitable products can tolerate specified ponding exposures. Drainage still needs review.
For owners in Clearwater, FL, that last point is the draw. Roofs here take heavy rain, then hold some of it. We apply silicone over metal, modified bitumen, built-up, single-ply and foam roofs that are sound but tired. The coating buys years. It does not repair what is wrong underneath, so the work starts with finding out what is.


