Heat Mat Insulation Board Screw and Washer - Silver
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HomebaseHeat Mat Insulation Board Screw And Washer 25Mm 50 Pack
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wilkoInsulation Board 25Mm Screw And Washer 50 Pack Silver Heat Mat
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Heat Mat - Insulation Board Fixings - 25mm Screw and Washer - 50 PackFree delivery in 1–3 days£18.00Visit shop →
Product Information
Full details
The Heat Mat Insulation Board Screw and Washer kit is an essential tool for professional installers and DIY enthusiasts looking to secure 6mm or 10mm concrete-faced insulation boards onto wooden or chipboard sub-floors. These galvanised fixings provide a robust and secure foundation for underfloor heating systems, ensuring long-term stability and a perfectly level surface. While the kit is specifically engineered for concrete-faced boards, it is important to note that each pack of 50 screws covers approximately two and a half full boards, so larger projects will require multiple packs to ensure full coverage.
All features
| Colour | Silver |
|---|---|
| Brand | Heat Mat |
Extended Product Information
FAQs
Can I use these screws on cement sub-floors?
No, these screws are specifically designed for wooden and chipboard sub-floors.
How many boards does one pack cover?
One pack of 50 screws and washers provides enough hardware to secure approximately two and a half full insulation boards.
Are these screws rust-proof?
They are galvanised, which provides significant resistance to rust, making them suitable for standard sub-floor environments.
Will these fit 12mm boards?
The kit is engineered for 6mm and 10mm boards; 12mm boards may require different fastener lengths depending on the sub-floor penetration requirements.
Do I need special bits to drive these screws?
They use standard driver bits suitable for the screw head type included in the pack.
Troubleshooting
Screw head sits above the board surface
Ensure you are using a drill with a depth stop or careful torque control to countersink the washer into the board face.
Board cracking during screw insertion
Reduce the torque on your power drill or pre-drill a small pilot hole through the concrete facing layer before driving the screw.
Pros and Cons
Pros
- Flush-fit design ensures a perfectly level surface for final flooring
- Galvanised finish offers excellent resistance to rust and wear
- Tailored specifically for common underfloor heating board thicknesses
- Reliable, high-strength hold for wooden sub-floor applications
Cons
- Limited to use with 6mm and 10mm concrete-faced boards
- Not suitable for direct installation into concrete slab sub-floors
- Each pack covers a relatively small area, requiring careful project estimation
Setup, Compatibility & Care
To ensure a successful installation, follow these guidelines:
- Compatibility: Verify your boards are 6mm or 10mm concrete-faced insulation boards.
- Drilling: While the screws are sharp, pilot drilling through the insulation board into the wooden sub-floor can prevent board cracking.
- Spacing: Apply enough fixings to secure the perimeter and center of the board to prevent future shifting.
- Care: Keep the screws in a dry environment prior to use to maintain the integrity of the galvanised coating. If the screws are exposed to moisture for prolonged periods during site storage, check for surface oxidization before application.