![]() ![]() But there are practical and historical reasons for saving it. Historic plaster may first appear so fraught with problems that its total removal seems the only alternative. This variety and the adaptability of the material to nearly any building size, shape, or configuration meant that plaster was the wall surface chosen for nearly all buildings until the 1930s or 40s. Plaster could be treated in any number of ways: it could receive stenciling, decorative painting, wallpaper, or whitewash. It provided a durable surface that was easy to clean and that could be applied to flat or curved walls and ceilings. Technical Preservation Services (TPS), Heritage Preservation Services Division, National Park Service prepares standards, guidelines, and other educational materials on responsible historic preservation treatments to a broad public.Ī versatile material, plaster could be applied over brick, stone, half-timber, or frame construction. Other than repairs or an occasional addition we hardly ever do it anymore.This publication has been prepared pursuant to the National Historic Preservation Act of 1966, as amended, which directs the Secretary of the Interior to develop and make available information concerning historic properties. Plaster when done right in my opinion is a far superior product however due to the labor and cost involved it is a dying art. My family has a business and we have done this for four generations or over 75 years. Other than repairs or an occasional addition we hardly ever do it anymore. ![]() A good primer and a quality paint job of the entire room is also recommended. The finish will be different however if it is on a opposite wall or if done by a skilled craftsman the normal person will not notice it at first glance. Now to answer your question, you will not have the same looking wall if you "drywall" the new wall. Once it is set he will then use a damp brush called a felt to "lightly brush" the wall smooth as silk. He will use a drop light to check the wall for imperfections as he trowels. As he trowels he will sprinkle or throw a little water on the wall with a calamine brush as he trowels it smooth. After the mixture begins to set the Plasterer will trowel it smooth. So you now have a scratch coat and two lime coats on the wall. The plaster is then applied to the wall once all around the room and then a second time with the same batch. The Plasterer will adjust the mixture to set as needed. The gauging comes in quick set as well as slow set. Once it is on the mortar board the gauging is added to it. The lime is mixed with water and then put on a mortar board. This consists of lime and what is called gauging. The scratch/brown coat also has silica sand mixed in it.This coat looks like and is as strong as cement.Īfter this coat dries a second coat or finish/white coat is applied. The seams are first taped with fiberglass or mesh tape then a scratch coat or brown coat is applied to the entire wall. It is a 4 x 8 or longer piece of wallboard with three coats of plaster on it.
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