FAQs : Exteriors

Why can't I use a water-based paint outside in winter?

In specifying the conditions under which coatings are to be applied, a general recommendation is that application should not start or should stop if the ambient temperature is below 10C (7C for Weathershield Maximum Exposure Masonry Paint) or r.h. exceeds 80%. In addition to the ambient temperature, a critical factor might be that of the surface to which the coating is applied. The temperature of heavy metal sections or plates, as well as plaster, rendering and masonry, for example, can be several degrees lower than the ambient temperature, especially early in the day.