Anthracite Grey UPVC Capping Board – 1.75m Long, 2 Pack (150mm to 300mm Depth Options)

Upgrade your interior sills with confidence using our Anthracite Grey UPVC Capping Boards – a practical and stylish solution for refurbishing damaged or outdated timber/MDF sills. Each board in this 2 Pack measures 1.75 metres in length and 9mm in thickness, offering extended coverage and a smooth, modern finish.

Perfect for moisture-prone areas like kitchens, bathrooms, utility rooms, and conservatories, these plastic sill covers are made from rigid, UV-stable UPVC that won’t warp, rot, or discolour. Ideal for both DIY users and professional fitters looking for fast, low-maintenance results with high visual impact.

Boards are available in multiple depths from 150mm to 300mm, ensuring compatibility with a wide range of window sill sizes and project requirements.

Key Product Features

• Includes 2 x 1.75m Boards – ideal for larger projects or multi-room installations
• Robust 9mm Thickness – rigid, long-lasting, and resistant to everyday wear
• Anthracite Grey Finish – premium modern look that complements contemporary interiors
• Fully Waterproof & UV-Stable – suitable for humid and sunlit spaces
• Depth Options: 150mm, 175mm, 200mm, 225mm, 250mm, 300mm
• Wipe-Clean Surface – no need for painting or sealing
• Simple Installation – trim and fix using adhesive; matching trims available

Ideal Uses

• Refinishing interior window sills in residential and commercial properties
• Fast, clean upgrades for landlords or home sellers
• Protecting sills from damp and sun exposure
• Covering old or flaking paint on timber sills

Technical Specifications

Installation Guide

1. Clean the existing window sill surface thoroughly
2. Cut the capping board to required length using a fine-tooth saw
3. Dry-fit the board to ensure accurate sizing
4. Apply strong grab adhesive (e.g. CT1, No More Nails) to the rear
5. Position the board and press firmly for at least 60 seconds
6. Seal edges with colour-matched silicone if desired

About Windows4You

At Windows4You, we offer premium quality UPVC window trims, capping boards, and cladding solutions. Our products are used by installers and homeowners across the UK who want reliability, great pricing, and fast delivery. Based in Newcastle-under-Lyme, we’re committed to excellent service and trusted support.