Our Window Sill Capping Boards are made from uPVC and come in variation widths. The  hockey stick (L Shape) shaped profile wraps around the existing lip of the internal sill to completely cover it providing a neat finish. uPVC internal sills can be used to cover over existing internal window sills to avoid the need for a complete replacement. 

The square edge Window Sill Cover boards are 9mm thick and are provided in 1.25 metre long lengths.  The boards are available in various widths and end caps designed to fit the boards can also be purchased.  For longer lengths see our fascia and soffit board section.

These bullnose window cill capping boards are exterior grade uPVC, so unlike timber, they are unaffected by moisture making them ideal in wet areas and rooms of high humidity such as bathrooms and kitchens.

• Provide and attractive finish and are maintenances free
• No need to paint or gloss and easy to clean
• Waterproof material with a lasting finish
• Easy to fit, just glue over existing sill boards (use a strong adhesive such as 'no nails')
• End caps available for a neat finish
• Provided in a long 1.25 metre length, saving money and waste when fitting multiple windows