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B&Q£23.79Visit shop B&Q - Walcur Spengler Screw Stainless SteelRoofing Screw With Rubber WasherPack Of 100
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The Gezu Impex Walcur Spengler Screw is an essential hardware solution for professional roofers and DIY enthusiasts looking to secure roofing materials with a watertight finish. These 4.5 mm x 25 mm screws are specifically engineered for ease of use, featuring a self-tapping design that eliminates pre-drilling and an integrated EPDM washer to prevent moisture ingress. While they offer superior performance in wood applications, users should ensure they are using the correct TX20 bit size to avoid stripping the screw head during installation.
| Colour | Grey |
|---|---|
| Brand | Gezu Impex |
No, these screws are specifically designed for wood applications. Using them in metal may damage the self-tapping tip.
No, each screw comes with a pre-installed EPDM sealing washer designed to provide a watertight fit.
These screws require a TX20 (Torx) screwdriver bit.
They are designed for exterior roofing use with high-quality finishes, but for extreme coastal environments, ensure they are checked regularly for salt corrosion.
Yes, the grey head finish provides a good base for exterior-grade paints if color matching is required for your project.
Ensure you are using a non-worn TX20 bit and check that your drill speed is not too high.
Although designed to prevent splitting, ensure you are not driving too close to the end of a board; if splitting persists, drill a small pilot hole.
Check if the base material is too hard or if there is an obstruction; verify you are using the correct drill torque setting.
To ensure optimal performance, verify that your base material is wood, as these screws are designed for wood-to-metal-sheet or wood-to-wood fastening. Always use a genuine TX20 driver bit; worn bits can lead to cam-out and damage the screw head. No pre-drilling is required, but if working near the very edge of a board, a small pilot hole is still recommended to prevent side-splitting. Store these screws in a dry environment to maintain the integrity of the EPDM rubber washers, as prolonged exposure to extreme UV or chemicals can degrade the seal material over time.
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