![]() Drywall sizes come in 4 x 8-foot, 4 x 10-foot, and 4 x 12-foot panels. Use a tape measure to get height and width, then multiply length by width to determine total square footage. Installing drywall entails fitting drywall panels to create solid walls and ceilings. When the plaster’s completely dry, use a powered sander or sandpaper to smooth the surface. Once the second layer is dry, apply a third coat if necessary. Wait 20 to 30 minutes to apply the second coat, which should be thinner than the first-adding water thins out the mixture. The drywall’s surface should be fully covered, without excess. Similar to drywall mudding, plasterwork entails using hand tools like knives and pans (or hawks and trowels). When the PVA glue is tacky, apply a coat to the drywall. Using a hand tool such as a drywall knife, mix the plaster with water until smooth. The first coat of plaster should be thick and spreadable. The thin barrier helps prevent the drywall from leaching moisture from the plaster, which might lead to crumbling. ![]() Coating the drywall with a thin layer of Polyvinyl acetate, or PVA glue, seals the drywall’s pores to ensure the plaster adheres to the drywall in a smooth layer. To apply a plaster finish, you’ll need a great deal of time and patience. This combines the efficiency of drywall with the artisan-style finish of plaster. Most home interiors today that use plaster are made with a drywall base (rather than lath), and then coated with plaster. It’s also durable and can last an average of 40 years. ![]() Made with non-combustible fibers, fire-resistant drywall is required by some building codes, particularly in commercial buildings like hotels.ĭrywall is relatively affordable and easy to install. This type is ideal for humid areas like bathrooms and laundry rooms. In the US, it is most commonly used in areas with high moisture, like the West and East Coast or the South. This drywall comes covered in fiberglass (not paper) to repel mold and mildew. This affordable drywall comes in a variety of sizes and is most commonly found in residential homes. What is drywall?ĭrywall- also known as Sheetrock, wallboard, plasterboard, or gypsum board-is a panel of gypsum plaster sandwiched between two sheets of paper. Plaster is still used for finishing walls, but lath has been replaced with drywall. Every year, more than 20 billion square feet of drywall is manufactured in North America, according to the Gypsum Association. Today, drywall has surpassed plaster as the industry standard for walls and ceilings. During World War II, lumber and labor shortages prompted builders to embrace using drywall for wall construction. But the plaster and lath method wasn’t efficient, as it required a lot of lumber and time for the thick, wet plaster to dry. Builders nailed lath-slim, tightly spaced boards-to wall studs, which they coated with layers of plaster to form a smooth, solid wall. Before World War II, most wall construction used plaster. ![]() The earliest known plasterwork dates to 7,000 B.C., when ancient Egyptians used plaster to line the interiors of houses and tombs. Plaster is also used for architectural details such as crown moulding, ceiling medallions, and quadrants, which frame features like windows and doors. When mixed with water, plaster forms a thick wet paste that helps fortify and smooth a wall’s surface. It comes in a powder made from a mineral compound like gypsum, and can also be made with lime, clay, or cement. Plaster is a mud-like composition commonly used in construction for walls and ceilings. $75.00 USD | 55M Preview Course What is plaster?
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