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B&Q£17.95Visit shop B&Q - Concrete In Fence Post Support 4" 100mm X2 (Square Wedge Grip Fencing Shoe)
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The Secure Fix Direct Concrete In Fence Post Support is designed for contractors and homeowners looking to install 4-inch (100mm) fence posts into concrete bases where ground-level spike installation is not feasible. This support system provides a sturdy, secure foundation for pergolas, decking, and perimeter fencing while effectively preventing timber rot by keeping posts elevated from wet ground. While these supports are highly durable, they do require a wet concrete setting process rather than simple soil insertion, which necessitates additional labor and drying time for a proper installation.
| Colour | Brown |
|---|---|
| Model Part Number | SFWG04/2 |
| Brand | Secure Fix Direct |
No, these are specifically engineered for 4-inch (100mm) square posts.
No, the internal wedge grip system provides a secure hold without the need for mechanical fasteners.
Yes, they come in brown, but the surface can be painted to match your specific fence color.
The spike length is 209mm, so the hole should be deep enough to allow for a significant concrete anchor beneath the support, typically 300mm+ depending on load.
These are designed to be set in concrete. They are not intended for direct burial in soft soil without a concrete foundation.
No, this pack contains 2 support brackets only.
Ensure you are using standard 100mm posts. If the post is slightly under-sized, consider using wood shims to ensure the wedge grips firmly.
Use a spirit level on at least two perpendicular sides of the support while the concrete is still wet to ensure perfect vertical alignment.
To install these supports, prepare a hole at least 12 inches deep and fill it with high-quality concrete. Place the support into the wet mix, ensuring it is perfectly level before the concrete begins to set. Once the concrete has hardened, simply insert your 100mm (4-inch) timber post into the cradle. The internal wedge will naturally tighten around the post. Ensure your timber is accurately sized; these are strictly for 100mm square posts. For maintenance, periodically inspect the wedge area for debris and ensure that no moisture is pooling at the base of the post, though the design is specifically created to mitigate this risk.
