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10 bestWindow Sillsof December 2025

112M consumers helped this year.

1

White UPVC Window Board/Cill Cover 2m Long 9mm Thick Including End Cap Plastic Window Sill Capping (200mm Depth)
White UPVC Window Board/Cill Cover 2m Long 9mm Thick Including End Cap Plastic Window Sill Capping (200mm Depth)

Generic

9.9

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2

5 Metre x 200mm Wide uPVC Fascia Cover Capping Board - 9mm Thick
5 Metre x 200mm Wide uPVC Fascia Cover Capping Board - 9mm Thick

AUNEOS

9.8

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3

5 Metre x 150mm Wide uPVC Fascia Cover Capping Board - 9mm Thick
5 Metre x 150mm Wide uPVC Fascia Cover Capping Board - 9mm Thick

AUNEOS

9.6

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37% off

4

225mm White UPVC Window Board/Cill Cover 1.25m Long 9mm Thick Plastic Window Sill Capping
225mm White UPVC Window Board/Cill Cover 1.25m Long 9mm Thick Plastic Window Sill Capping

Eurocell

9.3

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5

Bullnose MDF Window Board - 250mm x 18mm x 1500mm, White Primed
Bullnose MDF Window Board - 250mm x 18mm x 1500mm, White Primed

Generic

9.1

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150mm x 1m White UPVC Plastic External Window Sill with 2 End Caps

150mm x 1m White UPVC Plastic External Window Sill with 2 End Caps

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150mm White UPVC Window Board/Cill Cover 1.25m Long 9mm Thick Plastic Window Sill Capping

150mm White UPVC Window Board/Cill Cover 1.25m Long 9mm Thick Plastic Window Sill Capping

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White, 225mm 1.36m Long Laminate Window Board Cill Moisture-Resistant 23mm Chipboard UPVC Plastic Internal Sill Polyboard Duraboard

White, 225mm 1.36m Long Laminate Window Board Cill Moisture-Resistant 23mm Chipboard UPVC Plastic Internal Sill Polyboard Duraboard

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200mm Grey UPVC Window Board/Cill Cover 1.25m Long 9mm Thick Plastic Window Sill Capping

200mm Grey UPVC Window Board/Cill Cover 1.25m Long 9mm Thick Plastic Window Sill Capping

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6

Bullnose Capping Cover 9mm Thick Plastic Internal Window Sill Trim (2.5) - 240mm, White
Bullnose Capping Cover 9mm Thick Plastic Internal Window Sill Trim (2.5) - 240mm, White

Eurocell

8.8

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7

White, 225mm UPVC Fascia Capping Board 9mm Thick x 5m Length Plastic Window Cill Cover
White, 225mm UPVC Fascia Capping Board 9mm Thick x 5m Length Plastic Window Cill Cover

Truly PVC Supplies

8.6

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8

225mm Grey UPVC Window Board/Cill Cover 1.25m Long 9mm Thick Plastic Window Sill Capping
225mm Grey UPVC Window Board/Cill Cover 1.25m Long 9mm Thick Plastic Window Sill Capping

QUNREDA

8.3

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9

White UPVC Window Board/Cill Cover 1.1m Long 9mm Thick Plastic Window Sill Capping (225mm Width)
White UPVC Window Board/Cill Cover 1.1m Long 9mm Thick Plastic Window Sill Capping (225mm Width)

Generic

8.1

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10

300mm White UPVC Window Board/Cill Cover 1.25m Long 9mm Thick Plastic Window Sill Capping
300mm White UPVC Window Board/Cill Cover 1.25m Long 9mm Thick Plastic Window Sill Capping

Eurocell

7.8

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