Anthracite Grey UPVC Capping Board – 1.25m Long, 2 Pack (150mm to 300mm Depth Options)

Refresh your window sills with ease using our Anthracite Grey UPVC Capping Boards, supplied in a handy 2 Pack format. Each board measures 1.25 metres in length and is designed to cover and protect existing internal window sills made of timber or MDF – offering a clean, modern finish with no sanding, painting, or removal required.

Manufactured from rigid 9mm thick exterior-grade UPVC, these capping boards are waterproof, UV-resistant, and easy to clean – making them perfect for use in kitchens, bathrooms, utility rooms, or conservatories. Their smooth Anthracite Grey finish adds a contemporary touch and coordinates well with modern grey window frames.

Choose from a range of depths between 150mm and 300mm to suit various sill sizes. Whether you’re a DIY homeowner or a professional installer, these capping boards are a reliable, time-saving solution for property upgrades and renovations.

Key Features

• 2 Pack – perfect for multiple sills or larger areas
• 1.25m Length – ideal for shorter windows and compact spaces
• 9mm Thickness – rigid and durable, won’t sag or warp
• Waterproof & UV Resistant – suited for humid or sunlit interiors
• Smooth Anthracite Grey Finish – fade-resistant and stylish
• Available Depths: 150mm, 175mm, 200mm, 225mm, 250mm, 300mm
• Low Maintenance – simply wipe clean with a damp cloth

Typical Applications

• Covering damaged or outdated timber/MDF window sills
• Quick upgrades in rental or commercial properties
• Bathrooms, kitchens, and areas prone to condensation
• DIY home renovation or professional trade fit-outs

Technical Details

Installation Guide

1. Clean the existing sill to remove dust and residue
2. Cut the board to size with a fine-tooth saw
3. Dry-fit the board to check alignment
4. Apply strong grab adhesive (e.g. CT1, Gripfill) to the back
5. Press into position and hold firmly for 60 seconds
6. Seal edges with silicone if needed for a neat finish

About Windows4You

Windows4You is a trusted UK supplier of UPVC building materials, offering fast shipping and expert service. Whether you’re upgrading a single sill or renovating an entire property, we provide quality products and professional support every step of the way.