White UPVC Window Sill Cover – 1.5m Long, 9mm Thick (2 Pack – 100–400mm Depth Options)

Refresh your window sills with our 1.5-metre White UPVC Capping Boards, now available in a convenient 2 Pack. These durable 9mm thick boards provide a clean, modern look while covering old, damaged or stained timber or MDF sills without removal.

Made from rigid, high-grade UPVC, these boards are fully waterproof, UV resistant, and ideal for interior installations including kitchens, bathrooms, utility rooms or rental properties. Each board is supplied in a gloss white finish that’s easy to wipe clean and never needs painting.

With depth options from 100mm to 400mm, this 2-pack provides coverage for multiple windows or wide areas. Simply cut to size and fix using adhesive or screws.

Key Features

• 2 Pack – Each Board 1.5m x 9mm – Total coverage: 3 metres
• Gloss White Finish – Bright, smooth, and easy to clean
• UV & Water Resistant – Ideal for moisture-prone spaces
• Rigid Solid Profile – Doesn’t warp or flex like thinner trims
• Depth Options: 100mm to 400mm available
• Quick Installation – Apply with grab adhesive or screws
• Matching Accessories – End caps and corners sold separately

Common Applications

• Covering internal sills in multiple rooms or wider windows
• Refurbishing residential or rental properties
• DIY upgrades or trade installations
• Bathroom and kitchen improvements

Technical Specifications

Installation Instructions

1. Clean the existing sill surface thoroughly
2. Measure and cut the boards with a fine-tooth saw
3. Dry-fit before applying adhesive
4. Apply strong grab adhesive (e.g. CT1, No More Nails)
5. Press into position and hold for 60 seconds
6. Seal with white silicone or use matching end caps

Why Choose Windows4You?

Windows4You is a UK-based supplier of UPVC window trims, boards and accessories. We offer expert support, fast delivery, and consistent quality trusted by homeowners and professionals nationwide.