Using the proper drywall material improves fire resistance for home walls.
Drywall, sometimes called gypsum or sheetrock, does naturally provide some fire resistance. The predominant material in the drywall sheet, gypsum, does not burn. However, the paper the sheet is encased in does burn and heat does transfer through the drywall, increasing the possibility of combustion within the wall. Special types of drywall material are commercially available that increase the fire protection offered by the drywall. Installation of the fire resistant drywall utilizes the same techniques as standard drywall and falls within the abilities of do-it-yourselfers who have done other drywall projects.
Instructions
1. Attach Type X or Type C drywall material to the wall studs. Both include fiberglass in the gypsum mix to increase the length of time the drywall can be exposed to fire before the fire burns through to the opposite side of the wall. Type C contains more fiberglass and has a higher fire resistant rating than Type X.
2. Use the thickest drywall possible. The thicker the drywall the greater the fire resistance. Attach 5/8 inch drywall to the wall studs using 2-inch drywall screws placed every 6 to 8 inches.
3. Use a tape with a rated fireproof capacity. Commercially available tapes use a self-adhesive system to attach the tape to the drywall. Follow manufacturer's instructions for proper installation.
4. Place drywall compound over the screw heads and tape using a putty knife. Smooth the compound as much as possible and allow to dry. Sand the compound smooth and apply a second layer of compound to fill any gaps or low spots. Sand again before painting or applying wallpaper.
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