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How thick should drywall be?

Updated: 10/5/2023
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14y ago

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If your local building code requires a fire resistant wall or ceiling, then 5/8" is mandatory. Otherwise you can at present use 1/2" or 3/8". Warning 3/8" seems to be going out of production. You can buy it now, but if you need to replace some of it in a few years it may be difficult to obtain; then you either have a step in the wall or replace the whole lot !

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14y ago
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10y ago

The question is a bit confusing. It will depend on whether the wall is interior or exterior. Standard stick-built walls can be studded wirh 2 x 4's or 2 x 6's, then sheeted on the interior with gypsum board that can be found in thicknesses from 1/4 to 3/4 inch thicknesses, with 3/8, 1/2, and 5/8 being the most common.

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14y ago

Varies - 3/8", 1/2" & 5/8" are common thickness

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11y ago

1/2 inch is the standard for most interior walls unless it's a dividing wall between apartments. Then 5/8 Firestop is needed.

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13y ago

1/4", 1/2", 5/8" and 3/4".

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