Plasterboard screws, also known as drywall screws, are used to fix plasterboard to timber or metal framing. They differ from general-purpose screws in design, having a bugle-shaped head that helps prevent paper tearing. They’re often selected for compatibility with board materials and to reduce surface damage. Coarse thread drywall screws are used with timber studs, while fine thread versions are typically applied to thin-gauge metal. Common lengths include 50mm for standard board layers and 100mm where additional build-up is required.
Various specialised versions are also available, including screws with black phosphate coating to limit corrosion, as well as collated screws for auto-feed drivers. There are also wallboard screws for specific board types, with changes in thread pitch or drive type based on substrate and equipment. Packs for both manual and powered driving methods are available.
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Standard practice is to space screws at 400mm intervals along the studs and 300mm along the board edges. This gives adequate support and prevents board movement during fixing or over time. Where ceiling boards are involved, closer spacing, typically 230mm, is often used to prevent sagging. It’s always best to refer to the plasterboard manufacturer’s specifications and local building standards, as spacing may vary depending on board thickness, orientation, and stud material.
In most cases, no pilot holes are required. Plasterboard screws are self-tapping and designed to penetrate both plasterboard and the underlying timber or light metal framing without pre-drilling. This speeds up installation and reduces the risk of board damage. However, in particularly dense materials or with hardwood battens, some users may choose to pre-drill to ensure accuracy or avoid splitting. Always consider screw length, substrate type, and tool torque when deciding whether to pre-drill.