Doors
Windows
Ancillaries
Skylights and lanters
Pergolas
All products
White Capping Boards – Clean, Modern Window Sill Covers in Multiple Sizes
Our White Capping Boards offer a sleek and easy way to refresh your window sills without the need to remove existing boards. Made from durable, waterproof white UPVC, these boards are ideal for kitchens, bathrooms, and living spaces where a clean, modern finish is essential.
We stock a full range of widths from 100mm to 400mm, with lengths available from 1 metre up to 5 metres, making it easy to find the perfect fit for your project — big or small.
Choose from flexible pack options including:
1 Pack – for single window use
2 Pack – great for medium-sized jobs
4 Pack – perfect for larger renovations or multiple rooms
If your required size or quantity is not listed, please contact us — we’re happy to help with custom orders or bulk enquiries
white capping board
White UPVC 1.25m x 9mm Capping Board – Depth Options: 100mm to 400m
In stock
£9.67 – £30.45 (Vat inc.)
Select options
This product has multiple variants. The options may be chosen on the product page
White UPVC 1.25m x 9mm(2 Pack)Capping Board – Depth Options: 100mm to 400mm
In stock
£14.50 – £45.67 (Vat inc.)
Select options
This product has multiple variants. The options may be chosen on the product page
White UPVC 1.25m x 9mm(4 Pack)Capping Board – Depth Options: 100mm to 400mm
In stock
£29.00 – £91.34 (Vat inc.)
Select options
This product has multiple variants. The options may be chosen on the product page
White UPVC 1.50m x 9mm Capping Board – Depth Options: 100mm to 400m
In stock
£9.93 – £31.29 (Vat inc.)
Select options
This product has multiple variants. The options may be chosen on the product page
White UPVC 1.50m x 9mm(2 Pack)Capping Board – Depth Options: 100mm to 400mm
In stock
£14.90 – £46.93 (Vat inc.)
Select options
This product has multiple variants. The options may be chosen on the product page
White UPVC 1.5m x 9mm(4 Pack)Capping Board – Depth Options: 100mm to 400mm
In stock
£29.80 – £93.88 (Vat inc.)
Select options
This product has multiple variants. The options may be chosen on the product page
White UPVC 1.75m x 9mm Capping Board – Depth Options: 100mm to 400m
In stock
£10.20 – £32.14 (Vat inc.)
Select options
This product has multiple variants. The options may be chosen on the product page
White UPVC 1.75m x 9mm(2 Pack)Capping Board – Depth Options: 100mm to 400mm
In stock
£15.30 – £48.20 (Vat inc.)
Select options
This product has multiple variants. The options may be chosen on the product page
White UPVC 1.75m x 9mm(4 Pack)Capping Board – Depth Options: 100mm to 400mm
In stock
£30.61 – £96.42 (Vat inc.)
Select options
This product has multiple variants. The options may be chosen on the product page
White UPVC 2m x 9mm Capping Board – Depth Options: 100mm to 400mm
In stock
£10.74 – £33.83 (Vat inc.)
Select options
This product has multiple variants. The options may be chosen on the product page
White UPVC 2m x 9mm(2 Pack)Capping Board – Depth Options: 100mm to 400mm
In stock
£16.11 – £50.74 (Vat inc.)
Select options
This product has multiple variants. The options may be chosen on the product page
White UPVC 2m x 9mm(4 Pack)Capping Board – Depth Options: 100mm to 400mm
In stock
£32.22 – £101.49 (Vat inc.)
Select options
This product has multiple variants. The options may be chosen on the product page
White UPVC 3m x 9mm Capping Board – Depth Options: 100mm to 400mm
In stock
£36.81 – £62.21 (Vat inc.)
Select options
This product has multiple variants. The options may be chosen on the product page
White UPVC 3m x 9mm(2 Pack)Capping Board – Depth Options: 100mm to 400mm
In stock
£42.72 – £80.81 (Vat inc.)
Select options
This product has multiple variants. The options may be chosen on the product page
White UPVC 3m x 9mm(4 Pack)Capping Board – Depth Options: 100mm to 400mm
In stock
£60.44 – £136.64 (Vat inc.)
Select options
This product has multiple variants. The options may be chosen on the product page
Abundant Offer for Individual and Business Clients!
We are dedicated to creating the most efficient solutions and offering a wide selection of products for people eager to build the home of their dreams!
With our extensive range of products, you can choose not only the type of doors, windows, or other items but also personalize them to suit your needs. With Windows4You, you are in charge!
Changing the color? No problem! Adjusting the size? Piece of cake!
Now, you can design your home on your own terms!
If you encounter any issues with installation, you can count on us. With 11 years of experience as windows and doors installers, we ensure professional support every step of the way.
We are also open to partnerships in the B2B sector. Learn more about our B2B offer here:
https://www.window4you.co.uk/trade
Window sills