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.
For this reason, fire-rated drywall is sometimes called one-hour fire wallboard. In residences, fire-rated drywall is typically required by building codes to be installed in a few of these places: Garages and especially the garage walls that separate that area from the main house.
For commercial buildings, fire rated gypsum drywall is specified for most of the building walls and ceilings to meet building code requirements for fire partitions and assemblies. These fire rated partitions and assemblies provide life safety for the buildings occupants. Not sure if you need fire rated drywall in your home construction project?
Can drywall catch fire?
Drywall is relatively fire resistant. It’s composed of gypsum pressed between two sheets of thick paper.
Is drywall a fire resistant wall?
Drywall In Fire-Resistive Construction There are two areas in residential construction where one-hour fire resistive construction is required. One area is the wall separating an attached garage from the living area, and the other is enclosed usable space (walls and ceilings) under a stairway.
Ambient temp being the temp in the room. The drywall ain’t gonna combust at that temp but the studs behind it are a pyrolysis fire just waiting to happen over time. Lots of people make’em.
How close can drywall be to a fireplace?
When it comes to masonry gas fireplaces, drywall can only be installed at least six inches from the opening of the fireplace. Again, clearance recommendations will vary based on the manufacturer so make sure that you check your installation manual for specifics. When in doubt, consider consulting the help of a professional.
Type X is a gypsum-based drywall that is 5/8 inch thick and is installed on each side of a 2-inch by 4-inch wood stud, spaced 16 inches on center or spaced 24 inches on center., and between studs . Also Know, can you drywall over a fireplace?
My new zero clearance has framing within inches of the box and drywall will go right over the studs. The drywall on both fireplaces went right up to the edge with tile surround. Other than code distances for your studs, I would think the drywall is fine.
How far should a fireplace mantel be from the wall?
Any parts of the mantel that stick out more than 1 1/2 inches from the face of the wall over the opening must be at least 12 inches from the top of the firebox opening. Those rules apply to custom work, whether a homeowner or a contractor performs it.
How much clearance do you need around a fireplace surround?
National Standard Building Code: Combustible materials and trim must be at least 6 inches from the firebox opening. Mantel corbels and brackets attached along the sides of the opening must have additional clearance if they project more than 1 1/2 inches out from the face of the fireplace.
How hot does drywall need to be to pass ul test?
The reference temp for the UL test is 190 degrees above the ambient temp. Ambient temp being the temp in the room. The drywall ain’t gonna combust at that temp but the studs behind it are a pyrolysis fire just waiting to happen over time. Lots of people make’em.
Another common question is “What happens to the structural strength of drywall at 400°C?”.
One source proposed structural Bending strength of drywall is reduced linearly starting at 100C to near zero percent remaining at 400°C temp exposure for 1 hour.
Why not use Durock instead of drywall?
Because of the low R-value it’s supposed to be installed with a suitable backer board of some type. On the plus side Durock won’t burn in a fire situation but it also doesn’t have the built-in protection and cooling effect (due to the embedded molecular water in gypsum) that Drywall has.