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.
Life of sprayed polyurethane roof.
Conklin elastomeric roof coatings in fact may only need to be reapplied once to strengthen that possibility.
If the polyurethane foam roofing materials are properly installed and coated every 10 20 years there is no calculable age limit where the foam loses its effectiveness.
Spf roof system has a lifespan of about 10 to 20 years depending on how thick it is.
The foam could potentially last forever and still serve as a roof.
Best interval for recoating should be every 15 years.
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.
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.
Spray polyurethane foam roofing does not last.
Plus multiple independent studies have confirmed the long life expectancy of this highly durable roofing.
Recoating should be done regularly if you want to extend foam s life expectancy.
Sprayed polyurethane foam also referred to as spf probably has the longest roofing system lifespan in the study.
Actually when elastomeric roof coatings are reapplied at strategic intervals on top of it spray foam roofing has been shown to last up to 50 years.
You have to completely remove the damaged foam and apply a new layer of spf and elastomeric coating.