Plus multiple independent studies have confirmed the long life expectancy of this highly durable roofing.
Life of sprayed polyurethane roof.
Best interval for recoating should be every 15 years.
You have to completely remove the damaged foam and apply a new layer of spf and elastomeric coating.
Spf roof system has a lifespan of about 10 to 20 years depending on how thick it is.
Even severe damage is not as problematic.
The foam could potentially last forever and still serve as a roof.
A spray foam roof can be the last roofing system you ll ever need on a building.
Since a spray foam system consists of spray foam coating and granules after 10 20 years some of the coating and granules will naturally wear away.
Recoating should be done regularly if you want to extend foam s life expectancy.
The uv resistance comes from the silicone layer which is added above the polyurethane foam.
We say probably because this system is very young and many of the first spf roofs that were installed in the late 1960 s and early 1970 s are still in service.
Spray polyurethane foam roofing does not last.
A 20 mil coating will last 10 years a 25 mil coating will last about 15 years and a 30 mil coating will last about 20 years.
Sprayed polyurethane foam also referred to as spf probably has the longest roofing system lifespan in the study.