Question: Where Is Fire Rated Sheetrock Required?

Can you use 1/2 inch drywall ceiling?

1/2-inch: Half-inch drywall panels are the standard thickness for interior walls, as well as ceilings.

5/8-inch: These panels are commonly used for ceilings, or for walls that require a prescribed fire-resistant rating..

What is the fire rating of 5/8 Sheetrock?

1 hourNorm Abram replies: 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 makes a 1 hour fire rated wall?

According to the book “Commercial Drafting and Detailing,” a typical one-hour fire rated wall consists of 2×4 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. Type X gypsum board is wallboard to which non-combustible fibers have been added.

What temperature does drywall catch fire?

451 FahrenheitDrywall/Gypsum wallboard (GWB) is an accepted fire barrier; however, it is also a huge fuel source for the first few minutes of exposure to a fire or even temperatures higher than 451 Fahrenheit.

What is a fire rated barrier?

The term “fire barrier” refers to a structure that has, at minimum, a one-hour fire resistance rating. Based on the occupancy type for that particular building, the rating can extend to a four-hour rating. By comparison, a “fire partition” must have at least a 30-minute rating for certain types of occupancies.

Where is Firecode drywall required?

In residences, fire-rated drywall is typically required by building codes to be installed in a few of these places: Near furnace and utility rooms. Places where a wood stove is used. Garages and especially the garage walls that separate that area from the main house.

How thick is a 2 hour fire rated wall?

3 1/5 inchesThe fire-resistance rating of concrete masonry walls depends on the type of aggregate used in the units. 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.

What is a 30 minute fire rated wall?

A fire rated wall is an assembly of parts. That might include 5/8″ type X drywall but the drywall alone is not a fire rated assy. See ASTM E-119.

Is Sheetrock fire rated?

Drywall is relatively fireproof, but manufacturing processes such as adding glass fibers can increase the resistance. Drywall is relatively fire resistant. It’s composed of gypsum pressed between two sheets of thick paper. Gypsum is a soft mineral that by itself is not flammable.

What determines a fire rated wall?

A: A certification process determines the fire-rating of a wall system. It is the wall system, not specific products, that are tested and certified. For example, a fire-rated drywall board is approved for use as part of a certified wall system.

Should drywall touch the floor?

3 Answers. Drywall should definitely not touch concrete as moisture will wick (ie flow up the surface as in a candle/lamp wick) into the drywall and encourage mold growth. 3/8″ should be sufficient – your prop up plan is not only appropriate, but a common technique used by drywallers.

Do I need fire resistant drywall?

In residential homes, installation of fire rated drywall is often required by state/province and local building codes on interior and exterior walls near furnaces and utility rooms. Fire rated drywall can also be installed in a basement or other places where a wood stove might be used.

What is a 2 hour fire rated wall?

Gypsum Board: Two (2) hour rated walls have two (2) layers of 5/8″ Type ‘X’ gypsum wallboard panels on each side of the steel studs. The “Fire Tape” product would be used as an alternative to conventional joint tape in specific systems when: 3.

How do you make 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.