Why can’t regular drywall screws be used with cement board?
Drywall screws will corrode because of cement's alkaline properties during extended periods. Cement-board screws have special corrosion-resistant coatings along with deep and wide threads that help form strong bonds with materials. The correct selection of fasteners will maintain stability in tile or stone installations while preventing hardware failures that occur in wet conditions.
What features should I look for in a good cement-board screw in Los Angeles?
Cement-board screws should have three key features: head grooves for countersinking, extra-sharp points for better penetration, and wide threads for strong board grip. The standard screw length for plywood substrate attachment is 1¼ inches but heavy metal framing requires 1⅝-inch screws. The construction industry in Los Angeles recommends using galvanized or coated screws for extended corrosion protection in outdoor and high-moisture applications.
How should cement-board screws be spaced during installation in Los Angeles?
Cement-board screws should be spaced at 6 to 8-inch intervals across both the edges and the field area of the board. The correct spacing method maintains board flatness and supports tile or stone finishes without any movement. The board becomes weak and develops surface damage when screws are overdriven. The correct installation methods are crucial for Los Angeles kitchen, bathroom, and patio projects because they need to withstand heavy use and moisture exposure.