This stuff is very common in the south west as far as application on flat roofs for homes. It is designed to flex with heat and cold. (The temps I am talking about are from 130 to 35 degrees) I use this stuff on my home for the addition on the back. I used it for sealing a leak, however I coated the entire section of flat roof.
I did not notice much temp change. However the section I coated was about 700 square feet. ----It took about 3 applications before it really sealed the roof leaks. Now I coat my roof every other year, and have no leaks.
After using this stuff for 8 years here are some additional comments. It does fade with time. Not much just a little yellowing. It flexes well in the first year or so. After that it hardens to a point that no more flexing is available, a new coat is recommended. If you start the process of using this coating, there is no turning back. Recoating every 2 or 3 years will most likely be needed. It is not easily removed after it has cured. (about 24 hours) It does clean up with water and is very easy to apply with a paint roller.
1966 Mercury Park Lane 4 DR Breezeway 410 4V, C-6, 2.80 - Streamless.
1966 Lincoln 4 door Convertible 462 4V 1971 Ford LTD Convertible 429 4V Phoenix ~ Yeah it's hot however it's a dry heat!