For over four decades, properly formulated, top-quality latex paints based on all-acrylic binders have withstood all challenges to their position as the premier architectural finishes in North America. Recently, however, suppliers of other waterborne binders for exterior coatings have mounted a new campaign against the primacy of acrylic latex chemistry. The most interesting aspect of this latest effort is the novel strategy being employed.
Traditionally, manufacturers of alternative binders have routinely maintained that their products deliver the features of all-acrylic emulsions at a lower cost. Now, however, some are acknowledging the historical superiority of all-acrylic binders-and their continuing preeminence on bare wood surfaces -but are claiming that other chemistries have improved to the point where they represent legitimate performance alternatives in exterior applications, so long as they do not involve wood.
The uses specifically targeted by suppliers of alternative binders are non-wood materials -masonry, stucco, brick and metal -that are becoming increasingly popular in new home exteriors.