Asked by: Choudhry Landetxehome and garden indoor environmental quality
Is Sheetrock fire rated?
Last Updated: 13th February, 2020
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Hereof, is all Sheetrock fire rated?
Fire-Rated Type X Drywall Basics The thickness of this drywall is 5/8-inch, including all layers. Glass fibers are added to the board to help it retard fire. Also, because it is denser than normal gypsum-and-paper drywall, it takes longer for the fire to degrade it. Most Type X drywall has a one-hour fire rating.
Secondly, which walls should be fire rated? Fire walls in stepped buildings must extend 30 inches above the lower roof surface, and for 15 feet above the lower roof, the exterior wall must be protected with 1-hour fire-resistive construction and any openings in the protected area must have a minimum fire protection rating of at least 45 minutes (See Figure 10).
Similarly, you may ask, at what temperature does sheetrock ignite?
Drywall/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. That's because the paper fascia on gypsum wallboard, even fire rated GWB, is PAPER – paper coated with flammable paint.
What is the fire rating of 5/8 drywall?