they started using drywall instead of plaster after the 1950s.
they started using drywall instead of plaster after the 1950s.
when did they start using drywall instead of plaster?
after the 1950s
Na
Na
the plaster veneer method begins with the hanging of specially designated drywall ("blueboard"), in the conventional manner., n.b. in north america, the color of the face paper of drywall indicates its intended application: white for standard, green for moisture resistance, etc. plaster veneer wallboard is blue or gray . plaster veneer may also be applied to ordinary drywall, or over existing walls, but this requires "gluing" the existing wall surface by painting on a special adhesive compound, and then applying a thin layer of "base coat" plaster. after the blueboard or base coat covers the interior of a room, the finishing plaster is mixed in batches (typically about 5 gallons), by blending plaster powder with water, to the ideal consistency. working quickly, a thin layer (usually one to three millimeters) of finish plaster is applied over a wall face before the plaster begins to congeal in the bucket. over a period of a few hours, as the plaster chemically sets on the wall, it is periodically smoothed or textured using hand trowels, until the desired finish is achieved. when a wall face has sufficiently set, an adjoining face can be safely applied. after the plaster has fully set, it is allowed to cure for a period of days to weeks, permitting excess moisture to escape into the air. if the plaster is no more than about three millimeters thick, two to three days' cure time is usually sufficient. a skilled eye can see areas where moisture is lingering until the curing is complete. after the walls are fully cured, they are ideal for painting or papering.
plaster veneer