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PVC Cladding UK£5.39Visit shop Molan Brown Exitex Fixing Buttons - For 10Mm Polycarbonate Sheets - Box Of 10
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The PolyX Fixing Buttons are designed for DIY enthusiasts and professionals working with multiwall or solid polycarbonate roofing sheets who require a secure, weather-resistant fastening solution. These buttons provide the primary benefit of even pressure distribution across the sheet surface, preventing cracking or warping while ensuring a watertight seal against the elements. A key caveat to note is that they are specifically engineered for installation into timber rafters, and you must ensure proper hole alignment to maintain the integrity of the polycarbonate expansion gaps.
| Model Part Number | FB25BR |
|---|---|
| Brand | Storm |
These specific buttons are designed for timber rafters. Using them on metal frames would require different self-tapping screws not included in this kit.
The 25mm measurement refers to the diameter of the button head, which provides the surface area for pressure distribution.
Yes, always pre-drill the polycarbonate sheets to allow for expansion and contraction; otherwise, the sheets may buckle or crack.
Yes, they are manufactured from high-quality PVC intended for outdoor use and exposure to standard weathering conditions.
This box contains 10 fixing buttons.
The hole drilled in the polycarbonate was likely too small. Ensure you pre-drill a hole that is 2-3mm larger than the screw shank to allow for thermal expansion.
Check that the button is sitting flush against the sheet and that the screw has been tightened adequately to compress the integral seal without crushing the polycarbonate.
To install, first pre-drill a hole in your polycarbonate sheet slightly larger than the screw shank to account for thermal movement. Position the button over the hole and drive the provided screw through the center of the PVC casing into the timber rafter. Once secured, snap the protective cap into place for a finished look. These buttons are compatible with most standard polycarbonate sheet thicknesses where a 25mm diameter footprint is appropriate. Regular maintenance involves inspecting the caps annually to ensure they remain seated and checking that no debris has built up around the base, which could prevent water runoff.
