What is the difference between Type C and X drywall?
What is the difference between Type C and X drywall?
To help reduce the extent and severity of fire damage, Type X drywall was developed with glass fibers made to reinforce the gypsum core. Type C is designed with a higher percentage of glass fibers than Type X, allowing it to be more resistant under fire conditions.
What is Type C drywall used for?
Type C is an industry phrase to designate enhanced gypsum panels that exceed the requirements for Type X gypsum board in ASTM C1396. Type C panels typically have a shrinkage-compensating additive, and when exposed to heat, the Type C gypsum board expands providing more fire-resistance at joints and seams.
What is the main purpose for Type X or Type C drywall?
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.
What is Type X 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. Type X has a denser core and contains glass fibers that keep it from crumbling in the heat.
Is Type C drywall moisture resistant?
M-Bloc® Type C gypsum panels were developed as an improved mold and moisture resistant wallboard with additional properties to enhance the core of this type X wallboard to achieve superior performance when used in specific fire rated assemblies.
Can Type C drywall be used on walls?
Noncombustible (as described and tested in accordance with ASTM E136) ToughRock® Fireguard C® Gypsum Board is designed for use in a variety of interior drywall applications for wall and ceiling construction in assemblies with a designated fire-resistant rating.
What type of drywall is used in commercial buildings?
Regular drywall, often called white board, is the most common type used in ceilings and walls in homes and commercial projects.
Is Type C drywall fire rated?
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.
What kind of drywall do you use in a shower?
Greenboard Drywall Definition Cement backer board such as Durock is best used for tile in highly wet applications such as shower stalls, with greenboard and other water-resistant drywall panels kept only to high-humidity areas.
What are 3 different types of drywall?
Drywall comes in four common thicknesses, each offering a specific use and purpose.
- 1/4-Inch Drywall: The thinnest of all the options, 1/4-inch drywall is most commonly used as a skimming material.
- 3/8-Inch Drywall:
- 1/2-Inch Drywall:
- 5/8-Inch Drywall:
What thickness drywall should I use?
1/2 inch
The most common thicknesses for general application are 3/8 inch and 1/2 inch. However, several decades ago, 1/2 inch became the industry standard. Quarter-inch drywall is often used to cover damaged plaster walls and also for curved areas because it bends easier than thicker drywall.
What is the difference between Type X and Type C gypsum board?
1 Answer. Because the ore expands at the same time that the gypsum is shrinking, the board is dimensionally stable for an extended period of time. In other words, a Type C board is superior to Type X. Type C not only maintains the board integrity at high temperature but also keeps the board from shrinking.The majority of fire-rated assemblies use…
What are the specifications of drywall?
Drywall Hanging Specifications: 1. All interior walls are glued and screwed with 1- 1/4 screws in the field, minimal nails are used in the perimeter to set sheet. 2. All outside walls are screwed in the field and minimal nails are used. 3. All comer beads are stapled on with 1-1/4 staples to insure no movement will occur.
What is Type X sheetrock?
Type X drywall has special core additives that allow it to be used in fire rated designs and usually comes in 5/8” thickness. Type X drywall products will have a UL/ULC Marking printed on the back of each board identifying it as a fire-resistance rated board.
Is all drywall fire resistant?
All gypsum based drywall is fire resistant. It will actually slow the progress of a fire because most of the materials of which it is made up are not flammable. In fact, some moisture is always trapped within the gypsum , and the drywall will actually steam when heated to high temperatures.