Tek Roofing Screws – Sheet to Timber Slash Point – 25mm to 45mm – External Coating

Sheet to timber tek screws are a staple on any roofing job where profiled metal sheets need to be fixed directly into timber purlins or battens. These 6.3mm hex head screws come with a slash point tip, which cuts through the sheet cleanly without the need for pre-drilling. That alone saves a decent amount of time when you’re working through a run of roof sheets in all weathers.

Each screw is supplied with a 16mm composite aluminium and rubber washer already fitted. The rubber element compresses as the screw seats, creating a weathertight seal around the fixing point. The aluminium backing distributes load across the sheet and stops the washer deforming under drive torque. It’s a simple detail, but it makes a real difference to the finished fix and helps prevent water ingress at the fastener point over time.

Sheet to Timber Tek Screws: External Coating for Long-Term Performance

The external coating on these screws is there for a reason. Roofing fixings take a hammering from UV, rain and temperature cycling, and a bare or lightly treated screw will start to rust in short order. The coating on these sheet to timber tek screws is suited to exposed outdoor use, helping them hold up against the elements without corroding back through the sheet and causing staining or structural issues further down the line.

Available in 25mm, 32mm and 45mm lengths to suit different sheet and batten combinations. The 25mm is typically used on thinner sheet profiles with shallow timber, while the 45mm gives you more thread engagement through thicker sheet or where you need a more positive pull-down. All three sizes are sold in boxes of 100, which is a practical quantity for most roofing runs without over-ordering.

If you’re fixing corrugated steel, box profile or similar metal roofing sheet to a timber sub-structure, these are the screws for the job.