I just used my IR gun on the white painted reflector of the can. I stood on a chair and pushed the gun up inside the reflector to maximize the accuracy of the reading. The light has been on for 3 hours. The temp was 117*F. It's 35*F outside, there is R49 around the can and probably R10 or so above it. I do not have temperature of the exterior of the can, but I'm sure it's less.
Anyone know the high temperature at which spray foam begins to degrade?
The Great Stuff site says the working temp range is up to 120*F, but after it's cured I'm sure it's different.
|