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Window Sills & Cover Boards

Our Window Sills Cover Boards collection offers a durable and stylish solution for enhancing and protecting your interior and exterior window sills. Made from high-quality uPVC, these window sill covers are designed to provide a clean, modern finish while eliminating the need for painting or regular maintenance. Easy to install and available in a variety of sizes and finishes, they’re perfect for covering existing window sills or creating a sleek new look. 

Available in Black, White, Anthracite Grey and Rosewood

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Rosewood - uPVC Window Sill or Fascia Cover Board 9mm

Rosewood - uPVC Window Sill or Fascia Cover Board 9mm

£0.00 Incl. Vat - £0.00 Incl. Vat
£0.00 Incl. Vat
From £39.55 Incl. Vat
£39.55 Incl. Vat - £79.94 Incl. Vat
£39.55 Incl. Vat

Window Sill or Fascia Cover Board 9mm Rosewood PVC window boards provide a neat, clean and dry means of finishing around window and door reveals. T...

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£0.00 Incl. Vat - £0.00 Incl. Vat
£0.00 Incl. Vat
From £39.55 Incl. Vat
£39.55 Incl. Vat - £79.94 Incl. Vat
£39.55 Incl. Vat
BlackGrain - uPVC Window Sill Fascia Cover Board 9mm

Blackgrain Fascia Capping Board – 150mm x 9mm x 5m

£39.55 Incl. Vat - £39.55 Incl. Vat
£39.55 Incl. Vat
£39.55 Incl. Vat - £39.55 Incl. Vat
£39.55 Incl. Vat

A durable 9mm reveal liner board in Blackgrain, perfect for covering existing timber fascias or use as a window sill trim. This low-maintenance PVC...

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£39.55 Incl. Vat - £39.55 Incl. Vat
£39.55 Incl. Vat
£39.55 Incl. Vat - £39.55 Incl. Vat
£39.55 Incl. Vat
A Pair of 150mm External Window Sill End Caps White

A Pair of 150mm External Window Sill End Caps White

£0.00 Incl. Vat - £0.00 Incl. Vat
£0.00 Incl. Vat
£0.82 Incl. Vat
£0.82 Incl. Vat - £0.82 Incl. Vat
£0.82 Incl. Vat

A Pair of 150mm External Window Sill End Caps White 150mm End Caps

£0.00 Incl. Vat - £0.00 Incl. Vat
£0.00 Incl. Vat
£0.82 Incl. Vat
£0.82 Incl. Vat - £0.82 Incl. Vat
£0.82 Incl. Vat
240mm 3mm White Window Sill Cover Board Reveal Liner 2.5m

240mm 3mm White Window Sill Cover Board Reveal Liner 2.5m

£0.00 Incl. Vat - £0.00 Incl. Vat
£0.00 Incl. Vat
From £32.40 Incl. Vat
£32.40 Incl. Vat - £64.80 Incl. Vat
£32.40 Incl. Vat

240mm 3mm Thick White Window Sill Cover Board Reveal Liner 2.5m or 5m PVC window boards provide a neat, clean and dry means of finishing around win...

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£0.00 Incl. Vat - £0.00 Incl. Vat
£0.00 Incl. Vat
From £32.40 Incl. Vat
£32.40 Incl. Vat - £64.80 Incl. Vat
£32.40 Incl. Vat
Window Cill With End Cap And Channel 1027mm x 225mm
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Window Cill With End Cap And Channel 1027mm x 225mm

£10.00 Incl. Vat
£10.00 Incl. Vat - £10.00 Incl. Vat
£10.00 Incl. Vat
£5.00 Incl. Vat
£5.00 Incl. Vat - £5.00 Incl. Vat
£5.00 Incl. Vat

This uPVC window cill offers a clean, professional finish for external windows, complete with matching end caps and a channel for easy installation...

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£10.00 Incl. Vat
£10.00 Incl. Vat - £10.00 Incl. Vat
£10.00 Incl. Vat
£5.00 Incl. Vat
£5.00 Incl. Vat - £5.00 Incl. Vat
£5.00 Incl. Vat
Save 50% Save %
Window Cill Cover Board End Cap 300mm

Window Cill Cover Board End Cap 300mm

£0.00 Incl. Vat - £0.00 Incl. Vat
£0.00 Incl. Vat
From £2.24 Incl. Vat
£2.24 Incl. Vat - £7.91 Incl. Vat
£2.24 Incl. Vat

The 300mm Window Cill Cover Board End Cap is designed to provide a neat, sealed finish to the ends of external window cill cover boards. Available ...

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£0.00 Incl. Vat - £0.00 Incl. Vat
£0.00 Incl. Vat
From £2.24 Incl. Vat
£2.24 Incl. Vat - £7.91 Incl. Vat
£2.24 Incl. Vat
BlackGrain - uPVC Window Sill Fascia Cover Board 9mm
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Blackgrain Fascia Capping Board – 175mm x 9mm x 5m

£52.74 Incl. Vat
£52.74 Incl. Vat - £52.74 Incl. Vat
£52.74 Incl. Vat
£43.46 Incl. Vat
£43.46 Incl. Vat - £43.46 Incl. Vat
£43.46 Incl. Vat

A durable 9mm fascia capping board with realistic blackgrain wood-effect finish. This 175mm reveal liner is ideal for overcapping existing timber f...

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£52.74 Incl. Vat
£52.74 Incl. Vat - £52.74 Incl. Vat
£52.74 Incl. Vat
£43.46 Incl. Vat
£43.46 Incl. Vat - £43.46 Incl. Vat
£43.46 Incl. Vat
Save 18% Save %
BlackGrain - uPVC Window Sill Fascia Cover Board 9mm
Save 10% Save %

Blackgrain Fascia Capping Board – 200mm x 9mm x 5m

£52.74 Incl. Vat
£52.74 Incl. Vat - £52.74 Incl. Vat
£52.74 Incl. Vat
£47.50 Incl. Vat
£47.50 Incl. Vat - £47.50 Incl. Vat
£47.50 Incl. Vat

A 200mm wide fascia capping board with a 9mm profile, finished in realistic blackgrain wood-effect. This reveal liner is ideal for covering existin...

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£52.74 Incl. Vat
£52.74 Incl. Vat - £52.74 Incl. Vat
£52.74 Incl. Vat
£47.50 Incl. Vat
£47.50 Incl. Vat - £47.50 Incl. Vat
£47.50 Incl. Vat
Save 10% Save %
BlackGrain - uPVC Window Sill Fascia Cover Board 9mm

Blackgrain Fascia Capping Board – 225mm x 9mm x 5m

£52.74 Incl. Vat - £52.74 Incl. Vat
£52.74 Incl. Vat
£55.00 Incl. Vat
£55.00 Incl. Vat - £55.00 Incl. Vat
£55.00 Incl. Vat

A 225mm wide blackgrain fascia capping board with a 9mm thickness, ideal for overcapping existing wooden fascias. Designed as a reveal liner, this ...

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£52.74 Incl. Vat - £52.74 Incl. Vat
£52.74 Incl. Vat
£55.00 Incl. Vat
£55.00 Incl. Vat - £55.00 Incl. Vat
£55.00 Incl. Vat
BlackGrain - uPVC Window Sill Fascia Cover Board 9mm

Blackgrain Fascia Capping Board – 250mm x 9mm x 5m

£52.74 Incl. Vat - £52.74 Incl. Vat
£52.74 Incl. Vat
£59.00 Incl. Vat
£59.00 Incl. Vat - £59.00 Incl. Vat
£59.00 Incl. Vat

This 250mm blackgrain fascia capping board is designed to cover larger existing timber fascias. At 9mm thick, it's ideal as a reveal liner or decor...

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£52.74 Incl. Vat - £52.74 Incl. Vat
£52.74 Incl. Vat
£59.00 Incl. Vat
£59.00 Incl. Vat - £59.00 Incl. Vat
£59.00 Incl. Vat
BlackGrain - uPVC Window Sill Fascia Cover Board 9mm

Blackgrain Fascia Capping Board – 300mm x 9mm x 5m

£52.74 Incl. Vat - £52.74 Incl. Vat
£52.74 Incl. Vat
£65.00 Incl. Vat
£65.00 Incl. Vat - £65.00 Incl. Vat
£65.00 Incl. Vat

Our 300mm blackgrain fascia capping board is ideal for larger roofline areas or deep soffit overhangs. Designed to cover existing timber fascias, t...

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£52.74 Incl. Vat - £52.74 Incl. Vat
£52.74 Incl. Vat
£65.00 Incl. Vat
£65.00 Incl. Vat - £65.00 Incl. Vat
£65.00 Incl. Vat
BlackGrain - uPVC Window Sill Fascia Cover Board 9mm

Blackgrain Fascia Capping Board – 400mm x 9mm x 5m

£52.74 Incl. Vat - £52.74 Incl. Vat
£52.74 Incl. Vat
£79.95 Incl. Vat
£79.95 Incl. Vat - £79.95 Incl. Vat
£79.95 Incl. Vat

This 400mm Blackgrain fascia capping board is a durable 9mm uPVC reveal liner designed to overcap existing timber fascias. Featuring a woodgrain-ef...

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£52.74 Incl. Vat - £52.74 Incl. Vat
£52.74 Incl. Vat
£79.95 Incl. Vat
£79.95 Incl. Vat - £79.95 Incl. Vat
£79.95 Incl. Vat