What is gypsum drywall?
What is gypsum drywall?
Drywall (gypsum board) is used in North American construction as a faster alternative to plaster and wood. Drywall is made of gypsum (calcium sulfate dihydrate), paper, and additives such as mica, clay, and resin. Drywall that has been damaged by water loses its strength and can grow mold.
Why is drywall made of gypsum?
Gypsum drywall is an effective building material because gypsum is very fire-resistant. The gypsum molecule contains within it two water molecules and one calcium sulfate. Because gypsum plaster dries so much faster than lime plaster, it is much less likely to become damaged in the process of setting up.
How is gypsum used in drywall?
Gypsum board, also known as drywall, plasterboard or wallboard, is used to form panels made of gypsum plaster pressed between two thick sheets of paper. When gypsum board is exposed to heat or fire, the water is vaporized, retarding heat transfer. Gypsum also equilibrates humidity and heat peaks.
Is gypsum the same as drywall?
Sometimes the terms drywall and plasterboard are used interchangeably, but they’re actually two different products. Drywall (also known as wallboard, gypsum board, or sheetrock) is an interior construction panel that’s used for making walls and ceilings.
What are the disadvantages of using gypsum board?
Advantages of gypsum board include: low cost, ease of installation and finishing, fire resistance, sound control, and availability. Disadvantages include: difficulty in curved-surface application and low durability when subject to damage from impact or abrasion.
What are the disadvantages of gypsum board?
Advantages of gypsum board include low cost, ease of installation and finishing, fire resistance, sound control, and availability. Disadvantages include difficulty in curved surface application and low durability when subject to damage from impact or abrasion.
Is gypsum board cancerous?
Gypsum can irritate mucus membranes and the respiratory system. Talc or talcum powder can irritate the respiratory system, damage the lungs, and can contribute to the development of cancer. Exposure to powdered mica can lead to fibrosis of the lungs and long-term respiratory difficulties.
Is gypsum board waterproof?
The gypsum core in this gypsum board is water-resistant. The paper cover is also waterproof.
Can gypsum board be painted?
All properly prepared gypsum board surfaces which are to be painted shall be primed with a minimum of one coat of a good quality drywall primer (or other material manufactured especially for the purpose) to equalize the absorption between the gypsum board face paper, joint compound, and skim coating materials.
Is gypsum drywall safe?
Avoid drywall made from synthetic gypsum, which is made from coal waste. It can be contaminated with mercury that may be released into the air.