Fire Rated Drywall Thickness

Thicker drywall may be required by code for any wall or ceiling covered with a texture or skim coat where studs or joists are spaced 24 inches on center rather than 16 inches.

Fire rated drywall thickness.

Drywall product thickness in 1 2 in. 25 mm thickness measured perpendicular to the face of the wall of ceramic fiber in the joint can be used in walls with fire resistance ratings up to 3 hours while a 2 in. Finally the gypsum and fiberglass are packed tighter and denser than with regular. The thickest of all the types of drywall 5 8 inch drywall is often fire resistant drywall.

According to the book commercial drafting and detailing a typical one hour fire rated wall consists of 2x4 studs spaced 16 inches from the center of one stud to the center of the next covered by 5 8 inch type x gypsum board. It is 13 pounds lighter than other varieties for the same size and thickness. Type x fire rated gypsum drywall that is 5 8 inch 15 9mm thick and installed on each side of nominal 2 inch x 4 inch 38x89mm wood studs spaced 16 inch 400mm o c. It makes a great choice for ceiling applications because it helps to prevent sagging over time.

Thickness and composition. Type x drywall is 5 8 inches thick. 203 mm limestone aggregate concrete masonry wall with a maximum control joint width of in. Type x gypsum board is wallboard to which non combustible fibers have been added.

Type c fire rated drywall sometimes referred to as improved. A 60 minute fire rating is a measure of the amount. 13 mm a 1 in. This thicker drywall is often called fire resistant drywall.

51 mm thickness can be used. Get free shipping on qualified fire resistant drywall sheets or buy online pick up in store today in the building materials department. Common walls between residential living spaces and attached garages for example require a fire resistant. And it s not just thickness that makes the difference.

Drywall typically comes in 1 4 inch 3 8 inch and 1 2 inch thicknesses. Durock is manufactured in sheets with a thickness of anywhere from 1 4 to 5 8 inch a width of 32 36 or 38 inches and a length between 4 and 10 feet. Type c fire rated drywall has more glass fiber reinforcement and other ingredients in the gypsum core that makes its fire resistive properties superior to type x. Fire resistant 7 moisture resistant 4 mold resistant 1 no additional features.

For example for an 8 in. What is the difference between one hour fire rated drywall and three hour fire rated drywall and where would each one be used. Truck tool rental. In addition to the usual gypsum found in regular drywall fire rated drywall contains glass fibers to form a super tough core.

Or 3 5 8 inch 610 mm steel studs spaced 24 o c. Has a minimum fire rating for the assembly of 1 hour which is a typical requirement for many building codes. For the pro.