£3.95
Refresh and transform existing internal window sills with our uPVC Window Sill Cover Boards, designed to provide a clean, attractive and maintenance-free finish without the need to completely replace the existing window sill.
These square edge window sill capping boards feature a L-shaped profile that wraps around the existing lip of the internal sill, helping to completely cover the old sill and create a neat, professional appearance.
Manufactured from exterior-grade uPVC, these window sill cover boards are waterproof and resistant to moisture, making them particularly suitable for areas such as bathrooms, kitchens and other rooms with higher humidity.
Each board is 9mm thick and 1 metre long, with multiple width options available to suit different window sill sizes.
Choose from the following window sill cover board widths:
All boards are supplied in a 1 metre length and are 9mm thick.
Replacing an entire internal window sill can be time-consuming and unnecessary when the existing sill is structurally sound.
Our uPVC window sill capping boards are designed to fit over the existing internal sill, helping to hide dated, damaged or worn surfaces and providing a fresh new finish.
The L-shaped / hockey stick profile wraps around the existing sill lip to provide a neat finish across the sill and front edge.
This makes the product ideal for window refurbishment, home improvements, renovations and DIY projects.
Unlike traditional timber window boards, our exterior-grade uPVC window sill covers are unaffected by moisture.
This makes them particularly useful in areas where condensation, splashes or humidity can be an issue, including:
The waterproof material provides a durable finish without the need for painting or regular glossing.
The window sill cover boards are designed to be fitted over the existing sill using a suitable strong adhesive, such as a high-strength grab adhesive.
Simply measure the existing sill, select the appropriate width, cut the board to the required length where necessary and securely bond it over the existing sill.
Always ensure the existing surface is clean, dry, sound and suitable for bonding before installation.
Matching end caps are available separately to provide a clean and professional finish at the ends of the window sill cover board.
End caps can help conceal the exposed profile and create a more finished appearance.
Each board is supplied in a convenient 1 metre length, making it practical for fitting individual windows while also helping reduce unnecessary waste when working on multiple windows.
For longer lengths and other uPVC roofline products, see our fascia and soffit board range.
Product: Window Sill Cover Board
Material: Exterior Grade uPVC
Profile: Square Edge / Hockey Stick L Shape
Thickness: 9mm
Length: 1 Metre
Widths: 100mm, 125mm, 150mm, 175mm, 200mm, 225mm, 250mm, 300mm
Application: Internal Window Sill Cover / Cill Capping
Installation: Suitable Strong Adhesive
End Caps: Available Separately
These uPVC internal window sill cover boards are an ideal solution when you want to update existing window sills without the cost and disruption of completely removing and replacing them.
Perfect for:
Our 1 metre uPVC window sill capping boards provide a practical, waterproof and low-maintenance way to transform existing internal window sills.
Select your required width from 100mm to 300mm and create a clean, durable and professional-looking finish with minimal installation work.
