5/17/2023 0 Comments Plaster vs drywall![]() ![]() ![]() The fat is then used to fill small blemishes and voids, sometimes called "catfaces." This process is the key to a good, smooth trowel finish veneer plaster system. The idea behind hard water troweling is to bring the "fat" out of the plaster while compacting the surface. (The true two-coat system with an aggregate basecoat is more abuse resistant and allows the plaster crew some additional time to work the material.) A one-coat system is the finish coat applied in two passes. Two-coat systems use a veneer plaster basecoat that has some aggregate in the plaster. Veneer plaster can be one- or two-coat systems. When properly installed, they will get a system that is hard to beat when you consider the service life of a building. In both systems, architects specify veneer plaster to provide their clients a lower maintenance to the walls. Most designers think of this type of veneer plaster as an upgrade to a conventional gypsum board system. The residential type of veneer plaster is a little easier to trowel to a smooth finish and still provides a finish surface much harder than traditional gypsum board finish. The institutional type is very hard, dense and provides a finished surface that has proven to stand up to the everyday abuses common in buildings such as police stations, schools and hospitals. The NWCB refers to them often as the residential type and then the institutional/commercial type. There are two basic types of veneer plaster systems. ![]()
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