Drywall boards attach to the wood frames of interior walls and ceilings. To attach drywall, workers use special drywall screws. A popped screw refers to when a screw emerges over time, presenting a distinct bubble that is visible through the paint. The fix is simple, but it's best to hire a professional drywall contractor if many screws are popping. Contractors have special screw guns that rapidly can install new screws.
Wood Flex
Buildings that have drywall interiors generally have wood frames. Wood might seem rigid, but it significantly flexes because of seasonal temperature shifts or changes in humidity. When wood expands or shrinks, these changes displace the metal drywall screws, causing the screws to pop.
Settling
New buildings often settle during the first year or two after construction, depending on the quality of the workmanship. This can displace drywall screws, causing popping. Even the best contractors cannot prevent some settling, so new homeowners should be prepared for some popping and cracking on their walls and ceilings.
Poor Workmanship
Manufacturers design drywall screws with a fluted head that tapers to a flat edge, allowing for maximum holding power. If a worker installs a screw so deep that the fluted head breaks through the paper surface, the head no longer can hold the drywall in place. This can cause popping.
Considerations
The easiest way to fix popping screws is to install a new drywall screw to the proper depth right next to each pop. If the old screws stick out, use a screwdriver or screw gun to install them deeper. Properly install each new screw--the head of the screw should make a dimple in the paper surface of the drywall, but it should not break through.
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