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B&Q£35.99Visit shop - Windows4You Bullnose Window Sill CoverPlastic Upvc Cill Capping Board With 2 Pairs Of End CapsWhite (L)1M (W)180mmPack Of 2
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The Windows 4 You Bullnose Window Sill Cover is an ideal solution for homeowners and renovators looking to refresh tired, worn window sills with a modern, professional finish. Designed for both internal and external use, this durable uPVC capping board provides a clean, rounded aesthetic that fits directly over existing timber or concrete structures. While the boards are incredibly low-maintenance and easy to install, they require precise measuring and cutting to ensure a seamless fit against your existing window frames.
| Colour | White |
|---|---|
| Model Part Number | W4U-BN-WHITE-180MM-1M-2PK |
| Brand | WINDOWS 4 YOU |
Yes, these bullnose sill covers are specifically designed for both internal and external use.
No, the uPVC finish is designed to be low-maintenance and does not require painting, sanding, or sealing.
You can easily cut the boards to your required length using a standard fine-tooth saw.
Each pack contains two 1m long boards and matching end caps.
Use a high-quality uPVC-specific adhesive or a low-modulus silicone sealant for best results.
Yes, this product is suitable for covering both timber and concrete sills.
Check the existing sill for high spots or debris. If the substrate is uneven, consider sanding down bumps or filling voids before applying adhesive.
Ensure you are using a sharp, fine-tooth saw. Applying masking tape over the cut line before sawing can also help prevent splintering of the uPVC.
Apply the adhesive in a consistent bead along the length of the board. Use a sealant smoothing tool immediately after pressing the board into place to remove excess.
To install, ensure the existing window sill is clean, dry, and free of loose debris. Measure the width and length of your existing sill carefully before cutting the uPVC board with a fine-tooth saw. Apply a high-quality uPVC adhesive or low-modulus sealant to the back of the board, press it firmly onto the existing surface, and hold until secured. For long-term care, avoid using abrasive cleaners or scouring pads; a simple wipe with a damp cloth is all that is needed to maintain the bright white finish. Always ensure that the end caps are properly fitted to provide a finished look and seal the exposed cut ends.
