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Joint compound information


Kitchen renovation spackling to cover holes and tape between sheetrock boards
Drywall with joint compound applied.

Joint compound (also known as drywall compound, drywall mud, joint cement or mastic) is a white powder of primarily gypsum dust mixed with water to form a paste the consistency of cake frosting, which is spread onto drywall and sanded when dry to create a seamless base for paint on walls and ceilings.[1]

When used for new walls, joint compound effectively eliminates blemishes from the surface of drywall, such as fasteners, damage, or drywall tape. Joint compound is used to finish gypsum panel joints filled with paper or fiber joint tape, corner bead, trim and fasteners, and to skim coat. It is also convenient for patching holes, bumps, tears, and other minor damage to existing walls. In North America, troweling joint mud on gypsum panels is a standard construction technique prior to painting wall and ceiling surfaces.

Joint compound type and formula selection forms part of a drywall system that can be finished anywhere from a level 0 to a level 5, where 0 is not finished in any fashion, and 5 is the most pristine.[2]

A similar compound is used in sprayed-on textural finishing for gypsum panel walls and ceilings that are pre-sealed and coated with a joint compound. Until the last century, several different plasters such as veneer plaster and "plaster of Paris" have been used in similar ways to joint compounds as fillers or for decorative purposes since ancient times, and the actual make up, and working properties of these compounds is much similar.

  1. ^ "What Is Joint Compound - Drywall Compound Vs Spackle". Plastering Blog. 2016-12-14. Retrieved 2023-05-18.
  2. ^ "Drywall Finish Levels" (PDF).

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paints and related materials. Construction workers who sand drywall joint compound are often exposed to high concentrations of dusts, talc, calcite, mica...

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created by watering down joint compound to a soupy consistency. A trowel is then used to apply the joint compound. The joint compound will begin to form stalactites...

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concrete blocks). Unlike other structural pastes such as plaster or joint compound, correctly mixed and applied grout forms a water-resistant seal. Although...

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fireproof drywall, flooring, roofing, lawn furniture, and drywall joint compound. In 2011, it was reported that over 50% of UK houses still contained...

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where non-adhesive paper or mesh tape and drywall joint compound ("mud") is used to fill joints, cover nail heads, and repair any flaws. Plaster veneer...

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consistency, improves the workability of the compound, and provides resistance to cracking. In 2008, joint compound accounted for 54% of dry-ground mica consumption...

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Trowel

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Wiktionary Taping knife, a drywall tool with a wide blade for spreading joint compound Putty knife, a generally smaller and variously shaped tool used in a...

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first coat of joint compound. Not only does it help them in this manner, but it also causes a stronger bond between the joint compound, the tape and the...

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quantities for a wide variety of purposes, including additives for joint compound or drywall accessory products. Union Carbide sold the mine to its employees...

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task. The bolts have to be tightened evenly. Thread sealants such as joint compound (pipe dope or thread seal tape such as PTFE tape) are unnecessary on...

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distribution. The compound Poisson distribution is obtained by marginalising the joint distribution of (Y,N) over N, and this joint distribution can be...

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connecting with it more difficult. Cleaning and brushing with a quality joint compound to prevent oxidation is not necessary with copper. The trend in modern...

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