Anthracite Grey UPVC Capping Board – 3m Long, 2 Pack (150mm to 300mm Depth Options)

Give your window sills a modern, low-maintenance upgrade with our Anthracite Grey UPVC Capping Boards, now available in a cost-effective 2 Pack. Designed for fast installation and long-lasting performance, these boards are ideal for covering old, tired or damaged sills in bathrooms, kitchens, conservatories, and more.

Each board is a full 3 metres in length and 9mm thick, offering generous coverage and excellent rigidity. Made from exterior-grade, waterproof UPVC, the boards resist moisture, sunlight, and everyday wear, while the sleek Anthracite Grey finish complements contemporary interiors and frames.

Choose from depth options between 150mm and 300mm to suit your specific project. Whether you’re a homeowner or tradesperson, these boards are easy to fit and deliver a professional result with minimal effort.

Key Product Features

• 2-Pack Deal – ideal for larger projects or multiple window sills
• Extra-long 3m boards – fewer joints, faster installation
• 9mm thickness – rigid and durable for lasting performance
• Waterproof & UV-resistant – designed for long-term interior use
• Smooth Anthracite Grey finish – fade-resistant and easy to wipe clean
• Available Depths: 150mm, 175mm, 200mm, 225mm, 250mm, 300mm
• Compatible accessories – matching end caps, corners and adhesive available separately

Ideal Applications

• Refurbishing internal timber or MDF window sills
• Rental properties and fast renovations
• Moisture-prone areas like kitchens, bathrooms, and utility rooms
• Matching modern grey window and door frames
• DIY home improvement or trade installations

Technical Specifications

Installation Guide

1. Clean the existing sill to remove dust and grease
2. Measure and cut the capping board with a fine-tooth saw
3. Dry-fit to ensure a precise fit
4. Apply grab adhesive to the reverse side
5. Press into place firmly and allow to bond
6. Seal edges with silicone or caulk for a clean, finished look

Note: For continuous runs, boards can be joined with a butt joint or connector trim.

Why Buy from Windows4You?

Windows4You is a UK-based supplier of high-quality UPVC building products. We offer fast dispatch, expert support, and dependable service for trade and DIY customers nationwide. From trims to cladding, our products are trusted for professional and home use alike.