On cool weather application days, Acrymax coatings should not be applied when temperatures are below 45°F. Temperatures for 24 hours after application should ideally not fall below 45°F and must stay above freezing. At freezing temperatures, any water left remaining in the coating film can freeze and damage the paint film.

On very hot days, it is advisable to apply Acrymax coatings early in the morning before roof surface temperatures become too hot. This is especially critical when installing Poly-1 with HP-1000, as the tack coat can dry prior to embedding the polyester fabric.