How thick is fireproof drywall?

How thick is fireproof drywall?

Fireproof drywall is the common term; its industry name is Type X drywall. The thickness of this drywall is 5/8-inch, including all layers. Glass fibers are added to the board to help it slow down the fire. Also, because it is denser than normal gypsum and paper drywall, it takes longer for the fire to degrade it.

What is the fire rating of drywall?

1 hour
Using Fire-Rated Drywall The 5/8-inch, “fire-code” drywall (called Type X) increases a wall’s fire rating to a minimum of 1 hour, from the 30-minute rating for standard ½-inch drywall. And it’s not just thickness that makes the difference.

What is Type C fire rated drywall?

Type C drywall is known as the more durable version of Type X—there are more glass fibers in this product as well as more vermiculite components, giving it a fire resistance of 2-4 hours. You can find this product at your local drywall and insulation store in 1/2” and 5/8” thickness.

Is drywall considered fire-resistant?

All drywall is fire-resistant to some degree. Also called gypsum board, ordinary drywall panels are made of a layer of soft, non-flammable mineral called gypsum pressed between two thick sheets of paper.

Is purple drywall fire rated?

No. While all drywall is naturally fire-resistant, PURPLE drywall is unique because it also resists moisture, mold and mildew. Some PURPLE drywall products also stand up to scratches, scuffs, dents and sound.

What is required for a 2-hour fire rated wall?

Double the number of Type X sheets on the wall for a simple system installed over fire-resistant fiberglass insulation; each sheet of 5/8-inch Type X drywall is rated to resist fire for one hour, so two layers will produce a two-hour firewall. Put two sheets together on one side or use one sheet on each side of a wall.

How thick is 2-hour fireproofing?

3 ¼ in.
The construction is type 1B as defined by the International Building Code IBC [3] and the floor system is required to have a 2-hour fire resistance rating. A 2-hour restrained assembly rating can be achieved with a 3 ¼ in. light- weight concrete thickness over 2 in.

Is Type C drywall non combustible?

Let’s point out one main thing: due to the water composition in gypsum, all drywall types retard the spread of fire to a degree. But type X and type C drywall are both specifically designed to resist fire and thus increase safety.

How thick is a 2 hour fire rated wall?

A 2-hour rating can be achieved by a wall with an equivalent thickness of as little as 3 1/5 inches when expanded slag or pumice is used or 4 1/2 inches when siliceous gravel is used as the aggregate.

Is green drywall fire rated?

Greenboard Is Not Fire Resistant There is a fire-resistant drywall product known as Type X that’s sold in 5/8″ sheets for use around fireplaces and other high-risk locations in the home.

How thick is a 2-hour fire rated wall?

How many layers of drywall do I need for a 2-hour rating?

two layers
As 2 hours of fire protection has become the standard for fire safety in America, it has become somewhat of a standard practice to include two layers of type X drywall within a building’s perimeter in order to achieve this required level of fire safety.

How many layers of drywall do I need for a 2 hour rating?

What is the fire rating of 5/8 Sheetrock?

one hour
A: Fire rated drywall (5/8″) means it has a one hour burn thru rate.

What is blue sheetrock for?

Blue Board Drywall- Blue board drywall is another moisture resistant drywall that is used for veneer plastering. It has high water and mold resistance as well as unique absorption qualities. This type of drywall is often used in bathrooms and other rooms with a lot of moisture.

Is PURPLE drywall fire rated?

Is purple drywall fire-rated?

What is purple drywall used for?

Purple drywall offers the same advantages as regular drywall, but with superior moisture- and mold-resistant characteristics. It can be used with all wall and ceiling applications and is ideally suited where enhanced moisture and mold resistance is desired.

  • October 4, 2022