Decking and structural timber screws

Whether you're laying a new deck or building a pergola, the right countersunk timber screw makes the difference between a finish that lasts and one that works loose. ToolUp stocks decking screws in coated and stainless steel, including stainless decking screws for coastal and high-moisture sites, and screws suited to dense hardwoods like merbau, spotted gum and ironbark.

For exposed decks, stainless steel (A2 for general exterior, A4 for coastal) resists the rust that can stain hardwood around the fixing. Coated structural screws such as WIROX and Delta Seal suit undercover framing and bearers. Pre-drilling is recommended in dense hardwoods to prevent splitting, and each product page lists diameter, length, drive type and pack quantity to help you spec the job.