Anthracite Grey UPVC Capping Board – 1.5m Long, 1 Pack (150mm to 300mm Depth Options)

Refresh your interior window sills with our Anthracite Grey UPVC Capping Board, offering a modern, low-maintenance solution for tired or damaged surfaces. This 1.5 metre long board is designed to provide a seamless cover, eliminating the need for full removal or costly refurbishment.

Made from rigid exterior-grade UPVC, it delivers long-term protection against moisture, warping, and UV damage. Its sleek Anthracite Grey finish complements contemporary décor in kitchens, bathrooms, and living areas.

With a robust 9mm profile and depth options between 150mm and 300mm, it fits a wide range of internal window sills and trims. Whether you’re updating a rental property or completing a modern renovation, this capping board offers a professional-grade finish with minimal effort.

Key Product Features

• Length: 1.5m – perfect for standard-sized window sills
• Rigid 9mm Thickness – durable and impact-resistant
• Contemporary Grey Finish – UV-stable and easy to clean
• Waterproof UPVC – ideal for moisture-prone areas like bathrooms and kitchens
• Quick to Install – can be glued with standard grab adhesives
• Available Depths: 150mm, 175mm, 200mm, 225mm, 250mm, 300mm
• Low Maintenance – no painting, sanding, or varnishing required
• Compatible Accessories – end caps and corners available separately

Typical Uses

• Covering internal window sills in homes or offices
• Quick upgrades in rental properties or pre-sale renovations
• Protecting timber or MDF surfaces from wear and damp
• Matching with Anthracite Grey windows and doors
• DIY and trade refurbishment jobs

Technical Specifications

Installation Instructions

1. Clean the existing sill surface thoroughly
2. Cut the board to the correct length with a fine-tooth saw
3. Dry-fit to check positioning
4. Apply high-grab adhesive (e.g. CT1, No More Nails)
5. Press into place firmly and hold for 60 seconds
6. Optionally finish with silicone along the edges

Note: For installations over 1.5m, use connectors or butt joins where needed.

Why Buy from Windows4You?

Windows4You is a trusted UK supplier of UPVC trims, capping boards, fascia, and soffit solutions. With fast shipping, consistent product quality, and expert support, we help both DIY users and tradespeople get the job done right the first time.