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B&Q£9.95Visit shop - Window Sill Cover Board Plastic Upvc Window Cill Capping (L)1M (W)150mm (T)9mm
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The Virtual Plastics 150mm Window Sill Cover Board is designed for homeowners and DIY enthusiasts looking to renovate aging, scuffed, or damaged internal window sills without the need for expensive replacements. Providing a crisp, maintenance-free white finish, these 9mm boards are ideal for high-humidity areas like kitchens and bathrooms due to their moisture-resistant exterior-grade construction; however, users should ensure their existing sills are structurally sound and level, as this product is a decorative capping solution rather than a load-bearing replacement.
| Colour | White |
|---|---|
| Model Part Number | CB20064 |
| Brand | Virtual Plastics |
While the material is exterior grade, these boards are specifically designed as internal capping covers for existing sills.
You will need a tape measure, a fine-toothed saw, a pencil for marking, and a standard grab adhesive.
No, this is a decorative cover. If the underlying sill is rotten, it must be repaired or replaced structurally before capping.
Use a fine-toothed hand saw to avoid chipping the plastic edges and ensure your measurements account for any window reveals.
These boards are designed for a permanent white maintenance-free finish and are not intended to be painted.
Check if the existing sill is uneven or if there is excess debris behind the lip; sand down any protrusions or use a filler before applying the adhesive.
Ensure the original sill surface was degreased and completely dry before installation; verify that the grab adhesive is suitable for plastic-to-wood or plastic-to-masonry bonding.
To install, ensure the existing sill is clean, dry, and free from loose debris. Measure the width of your window aperture and cut the board to size using a fine-toothed hand saw or jigsaw. Apply beads of grab adhesive along the length of the existing sill, then slide the cover board over the lip. Hold firmly until the adhesive sets. For care, simply clean the surface with warm soapy water and a soft cloth; avoid abrasive sponges or harsh chemical cleaners which may scratch the surface finish.
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