Fixings and accessories
Tek screws and fixings
Tek screws, roofing screws and stitching screws
Primary fixings to hold sheets and panels to the frame, and stitching screws to join side laps and flashings. Tell us the frame and the sheet and we'll supply the right fixing, colour-matched.
- For steel or timber frames
- Stitching screws for laps and flashings
- Colour-matched heads
- Supplied with your sheets
Which fixing goes where
Primary fixings hold the sheet or panel to the frame. Secondary fixings, often called stitchers, join sheets at the side laps and fix flashings to the sheets. Each needs a different screw.
On a steel frame, self-drilling (tek) screws drill their own hole and fix in one go. The drill point has to suit the steel: light-section points for thinner purlins and rails, heavy-section points for thicker steelwork. On timber purlins and battens, a timber screw is used instead.
Length, washers and colour
The screw has to pass through the sheet, any spacer or insulation and into the frame, so an insulated panel needs a much longer fixing than a single-skin sheet. Roofing screws carry a bonded sealing washer that keeps the hole watertight, and colour-matched heads finish the roof in the same colour as the sheets.
Carbon steel screws suit most buildings. Stainless steel is used where conditions are harsher, for example near the coast or in livestock buildings.
Tell us the job, we'll pick the fixings
Send us the frame type and thickness, the sheet or panel and its colour, and our in-house team will choose the fixings and add them to your order. We supply fixings from leading makers.
Questions we’re asked
What is a tek screw?
A self-drilling screw with a drill point, so it drills its own hole and fixes in one go. Roofing tek screws have a bonded sealing washer to keep water out.
Which screws do I need for roofing sheets?
It depends on what you're fixing into: light steel, heavy steel or timber each need a different screw, and the length depends on the sheet or panel thickness. Tell us the frame and the sheet and we'll supply the right ones.
Do you have to pre-drill for tek screws?
No. The drill point makes its own hole, as long as it's the right point for the thickness of steel you're fixing into.
Do tek screws go through steel?
Yes, that's what they're made for. Light-section screws suit thin cold-rolled purlins and rails; heavy-section screws have a longer drill point for thicker hot-rolled steel.
UK manufactured
