The condenced version I got has a 32* F - 80* F application range and the less sun the better.
Some of the ready to spray versions differ and need 55*-80* temp ranges for application.
Application Tips: How To Apply Wet & Forget In Your Region - Wet & Forget Blog
I just bought 6 gallons of the condensed version. If it doesn't work I will have blown $200 and a few hrs. If it does work Ill of saved myself a few days pressure washing and cleaning.
I'm not a "fan boy" just yet. Need to see some progress to see if it was worth it or not.
I also sprayed some other items yesterday. Saving those pics for a before/after comp. post.
So far I've tested it on and am awaiting the results from:
concrete
vinyl siding
asphalt shingles
aluminum siding
vinyl windows
glass
pressure treated yellow pine
painted steel
raw pine wood
fiberglass
Oh and it's slippery when wet so if you use it on a roof - don't paint yourself into a corner like I did