Spray foam is one of the best roofing materials available. It has great uplift resistance, water resistance, insulating properties, and it looks great. The one true nemesis of a spray foam roof is the sun. Without a top coating layer, spray foam will disintegrate under the sun’s brutal UV rays. It simply cannot stand up to the sun.
For this reason, it is recommended for all roofs, and required for a roof to receive our warranty, for a top coating of silicone to be sprayed on top of the spray foam. This protects from the sun and extends the life of the roof. Once coated properly, there is no known age where the roof fails.
Spray Foam Recoat – A New Roof Every 10-20 Years
However, coating must also be renewed. Depending on the thickness and the local environment, the coating on top of the spray foam should be reapplied every 10-20 years. We call this a spray foam recoat. Once spray foam is recoated, the roof gains back all of its UV resistance, beautiful, clean surface, and is ready to go for another 10-20 years.
A spray foam recoat renews the weathering surface of the roof, and allows for maintenance and repair in between coats. This new coating provides additional longevity and durability, improves the reflectivity of the roof (“cool roof”), and of course extends the warranty.
Benefits of Spray Foam Recoat – Installation
Spray foam recoats have many advantages over roof replacements during the installation process: the building owner retains their existing SPF system. They don’t have to tear out and re-roof. This allows activities to continue inside the facility. Building owner eliminates the waste they would have added to a landfill with no tear out. This is a huge environmental factor, as it can keep hundreds of roof systems out of landfills every year.
If you’re considering a new roof, look at foam first. Once it is coated, all it takes is a simple spray foam recoat every 10-20 years and your roof will be completely sealed again.
If you’d like to read more about a spray foam recoat, check out a great presentation here.