Tradeline Square Edge PVC Window Board / Capping Board 300mm x 3m

Tradeline Square Edge PVC Window Board / Capping Board 300mm x 3m

The Tradeline Square Edge PVC Window Board / Capping Board 300mm x 3m is a premium-quality finishing board designed for both interior and exterior applications. Manufactured from durable 100% uPVC, it provides a long-lasting, low-maintenance solution for replacing tired window sills, creating clean window reveals or protecting existing fascia boards. At CladdingKing, we supply Tradeline PVC Window Boards as a practical alternative to timber, offering excellent durability without the need for painting or ongoing maintenance.

With its generous 300mm width and crisp square-edge profile, this board creates a modern architectural finish while delivering exceptional resistance to moisture, UV exposure and everyday wear.

100% Waterproof uPVC Construction

Manufactured from solid uPVC, the Tradeline Window Board is completely waterproof and resistant to rot, swelling and warping. Unlike timber alternatives, it performs exceptionally well in humid environments such as bathrooms, kitchens and wet rooms, while also providing reliable weather resistance for external applications.

The durable surface resists staining, scratching and fading, maintaining its bright white appearance with minimal maintenance.

Ideal for Internal and External Applications

Internally, the board is perfect for upgrading existing window sills, covering damaged surfaces and creating neat, low-maintenance window reveals. Externally, it can be used as a fascia capping board, protecting existing roofline timber while providing a fresh, professional appearance.

The 9mm thick profile offers excellent strength while remaining lightweight and easy to handle during installation.

Quick and Simple Installation

For internal applications, simply cut the board to size using a suitable uPVC saw before fixing it to the existing surface with quality grab adhesive such as Decorwall Megabond or an appropriate caulk adhesive. The lightweight construction makes handling and installation straightforward for both professional installers and DIY users.

When used externally as a fascia capping board, we recommend securing the board using white polytop or plastic top pins to achieve a secure, long-lasting installation.

Low-Maintenance Performance

Unlike timber boards that require regular painting and repairs, the Tradeline PVC Window Board only requires occasional cleaning with a damp cloth to maintain its appearance. Its smooth, non-porous surface resists everyday dirt and moisture, making it ideal for busy homes and commercial properties.

Why Choose the Tradeline Square Edge PVC Window Board?

• Large 300mm x 3m board.
• Manufactured from durable 100% uPVC.
• 100% waterproof and moisture resistant.
• Suitable for window sills, window reveals and fascia capping.
• Modern square-edge profile.
• Will not rot, warp or swell.
• Low-maintenance alternative to timber.
• Lightweight and easy to install.
• Suitable for bathrooms, kitchens, wet rooms and external rooflines.
• Clean white finish complements modern homes.

Complete your installation using Decorwall Megabond Adhesive for internal fixing or white polytop pins for external fascia applications to achieve a durable, professional-quality finish.