Window Board, MDF Window Board, Window sil Board

Check local branch stock

MDF Primed N&T Window Board Moisture Resistant FSC 25 x 269mm

WAS: per metre

WAS

£17.58 per metre (Inc VAT)

WAS: per metre

WAS

£14.65 per metre (Ex VAT)

Pre-primed white MDF (Medium-density fibreboard) window boards are resistant to splitting, warping, and twisting. Produced to the most exacting standards, the MDF window boards are second to none. Twice spray primed and sanded meant all you need to do is...

WAS: per metre

WAS

£17.58 per metre (Inc VAT)

WAS: per metre

WAS

£14.65 per metre (Ex VAT)
MDF Primed N&T Window Board Moisture Resistant FSC 25 x 219mm

WAS: per metre

WAS

£14.08 per metre (Inc VAT)

WAS: per metre

WAS

£11.73 per metre (Ex VAT)

Pre-primed white MDF (Medium-density fibreboard) window boards are resistant to splitting, warping, and twisting. Produced to the most exacting standards, the MDF window boards are second to none. Twice spray primed and sanded meant all you need to do is...

WAS: per metre

WAS

£14.08 per metre (Inc VAT)

WAS: per metre

WAS

£11.73 per metre (Ex VAT)
MDF Primed N&T Window Board Moisture Resistant FSC 25 x 244mm

WAS: per metre

WAS

£15.71 per metre (Inc VAT)

WAS: per metre

WAS

£13.09 per metre (Ex VAT)

Pre-primed white MDF (Medium-density fibreboard) window boards are resistant to splitting, warping, and twisting. Produced to the most exacting standards, the MDF window boards are second to none. Twice spray primed and sanded meant all you need to do is...

WAS: per metre

WAS

£15.71 per metre (Inc VAT)

WAS: per metre

WAS

£13.09 per metre (Ex VAT)
MDF Primed Fibretrim Window Board Moisture Resistant FSC 25 x 244 x 3660mm

WAS: per metre

WAS

£15.71 per metre (Inc VAT)

WAS: per metre

WAS

£13.09 per metre (Ex VAT)

Moisture resistant primed MDF Fibretrim window board for durable interior window reveals and refurbishments. Buy online with delivery or Click & Collect today.

WAS: per metre

WAS

£15.71 per metre (Inc VAT)

WAS: per metre

WAS

£13.09 per metre (Ex VAT)
MDF Primed N&T Window Board Moisture Resistant FSC 25 x 294mm

WAS: per metre

WAS

£18.90 per metre (Inc VAT)

WAS: per metre

WAS

£15.75 per metre (Ex VAT)

Pre-primed white MDF (Medium-density fibreboard) window boards are resistant to splitting, warping, and twisting. Produced to the most exacting standards, the MDF window boards are second to none. Twice spray primed and sanded meant all you need to do is...

WAS: per metre

WAS

£18.90 per metre (Inc VAT)

WAS: per metre

WAS

£15.75 per metre (Ex VAT)
MDF Primed Fibretrim Window Board Moisture Resistant FSC 25 x 269 x 3660mm

WAS: per metre

WAS

£17.58 per metre (Inc VAT)

WAS: per metre

WAS

£14.65 per metre (Ex VAT)

MDF Primed Window Board is used to seal the bottom of a window and cover the gap between the window and the wall in which it is installed. It makes use of a window ledge and is simple to cut and install. The primed white window board is paintable in any...

WAS: per metre

WAS

£17.58 per metre (Inc VAT)

WAS: per metre

WAS

£14.65 per metre (Ex VAT)
MDF Primed Fibretrim Window Board Moisture Resistant FSC 25 x 219 x 3660mm

WAS: per metre

WAS

£14.08 per metre (Inc VAT)

WAS: per metre

WAS

£11.73 per metre (Ex VAT)

MDF Primed Window Board is used to seal the bottom of a window and cover the gap between the window and the wall in which it is installed. It makes use of a window ledge and is simple to cut and install. The primed white window board is paintable in any...

WAS: per metre

WAS

£14.08 per metre (Inc VAT)

WAS: per metre

WAS

£11.73 per metre (Ex VAT)
MDF Primed Fibretrim Window Board Moisture Resistant FSC 25 x 294 x 3660mm

WAS: per metre

WAS

£18.90 per metre (Inc VAT)

WAS: per metre

WAS

£15.75 per metre (Ex VAT)

MDF Primed Window Board is used to seal the bottom of a window and cover the gap between the window and the wall in which it is installed. It makes use of a window ledge and is simple to cut and install. The primed white window board is paintable in any...

WAS: per metre

WAS

£18.90 per metre (Inc VAT)

WAS: per metre

WAS

£15.75 per metre (Ex VAT)
MDF Primed Fibretrim Window Board Moisture Resistant FSC 25 x 168 x 3660mm

WAS: per metre

WAS

£11.94 per metre (Inc VAT)

WAS: per metre

WAS

£9.95 per metre (Ex VAT)

MDF Primed Window Board is used to seal the bottom of a window and cover the gap between the window and the wall in which it is installed. It makes use of a window ledge and is simple to cut and install. The primed white window board is paintable in any...

WAS: per metre

WAS

£11.94 per metre (Inc VAT)

WAS: per metre

WAS

£9.95 per metre (Ex VAT)
MDF Primed Fibretrim Window Board Moisture Resistant FSC 25 x 194 x 3660mm

WAS: per metre

WAS

£12.70 per metre (Inc VAT)

WAS: per metre

WAS

£10.58 per metre (Ex VAT)

Moisture resistant primed MDF window board for a smooth, durable finish in new builds and refurbishments. Buy online with delivery or Click & Collect.

WAS: per metre

WAS

£12.70 per metre (Inc VAT)

WAS: per metre

WAS

£10.58 per metre (Ex VAT)
MDF Primed N&T Window Board Moisture Resistant FSC 25 x 219 x 3660mm

WAS: per piece

WAS

£51.52 per piece (Inc VAT)

WAS: per piece

WAS

£42.93 per piece (Ex VAT)

FSC primed moisture resistant MDF window board, ready for painting and ideal for modern interior projects. Buy online or Click & Collect today.

WAS: per piece

WAS

£51.52 per piece (Inc VAT)

WAS: per piece

WAS

£42.93 per piece (Ex VAT)
MDF Primed N&T Window Board Moisture Resistant FSC 25 x 144 x 3660mm

WAS: per piece

WAS

£11.03 per piece (Inc VAT)

WAS: per piece

WAS

£9.19 per piece (Ex VAT)

FSC moisture resistant primed MDF window board with a bullnose profile, ready for painting and installation. Buy online or Click & Collect today.

WAS: per piece

WAS

£11.03 per piece (Inc VAT)

WAS: per piece

WAS

£9.19 per piece (Ex VAT)
MDF Primed N&T Window Board Moisture Resistant FSC 25 x 244 x 3660mm

WAS: each

WAS

£57.47 each (Inc VAT)

WAS: each

WAS

£47.89 each (Ex VAT)

FSC moisture resistant primed MDF window board with a smooth finish, ready for painting and installation. Buy online or Click & Collect today.

WAS: each

WAS

£57.47 each (Inc VAT)

WAS: each

WAS

£47.89 each (Ex VAT)
Window Board Redwood FSC 32 x 225mm

WAS: per metre

WAS

£23.09 per metre (Inc VAT)

WAS: per metre

WAS

£19.24 per metre (Ex VAT)

FSC redwood window board provides a natural timber finish for internal window reveals and joinery. Buy online today.

WAS: per metre

WAS

£23.09 per metre (Inc VAT)

WAS: per metre

WAS

£19.24 per metre (Ex VAT)
Window Cill External Hardwood 50 x 150mm

WAS: per metre

WAS

£32.40 per metre (Inc VAT)

WAS: per metre

WAS

£27.00 per metre (Ex VAT)

These sturdy hardwood timber window Cills or sometimes known as Sills, form a protruding lip that helps to directs water away from the brickwork. These Scandinavian redwood mouldings naturally repel insects and does not need to be treated with chemicals...

WAS: per metre

WAS

£32.40 per metre (Inc VAT)

WAS: per metre

WAS

£27.00 per metre (Ex VAT)
Box Window Cill Kerung Hardwood 70 x 142mm

WAS: per metre

WAS

£40.40 per metre (Inc VAT)

WAS: per metre

WAS

£33.67 per metre (Ex VAT)

These sturdy hardwood timber box window Cills or sometimes known as Sills, form a protruding lip that helps to directs water away from the brickwork. Keruing is a durable, versatile hardwood, as with all natural products, colours can vary between batches...

WAS: per metre

WAS

£40.40 per metre (Inc VAT)

WAS: per metre

WAS

£33.67 per metre (Ex VAT)
Glazing Lug Bead Hardwood 19 x 125mm

WAS: per metre

WAS

£4.80 per metre (Inc VAT)

WAS: per metre

WAS

£4.00 per metre (Ex VAT)

Hardwood glazing lug bead for secure glazing installations and traditional joinery applications. Buy online with home delivery or Click & Collect today.

WAS: per metre

WAS

£4.80 per metre (Inc VAT)

WAS: per metre

WAS

£4.00 per metre (Ex VAT)
MDF Moisture Resistant Window Board N&T White Primed FSC 5400 x 294 x 25mm

WAS: each

WAS

£102.07 each (Inc VAT)

WAS: each

WAS

£85.06 each (Ex VAT)

White primed moisture resistant MDF window board, FSC certified and ready for painting in interior projects. Buy online or Click & Collect today.

WAS: each

WAS

£102.07 each (Inc VAT)

WAS: each

WAS

£85.06 each (Ex VAT)
MDF Primed N&T Window Board Moisture Resistant FSC 25 x 194mm

WAS: per metre

WAS

£11.03 per metre (Inc VAT)

WAS: per metre

WAS

£9.19 per metre (Ex VAT)

Pre-primed white MDF (Medium-density fibreboard) window boards are resistant to splitting, warping, and twisting. Produced to the most exacting standards, the MDF window boards are second to none. Twice spray primed and sanded meant all you need to do is...

WAS: per metre

WAS

£11.03 per metre (Inc VAT)

WAS: per metre

WAS

£9.19 per metre (Ex VAT)
MDF Primed N&T Window Board Moisture Resistant FSC 25 x 294 x 3660mm

WAS: per piece

WAS

£69.18 per piece (Inc VAT)

WAS: per piece

WAS

£57.65 per piece (Ex VAT)

FSC moisture resistant primed MDF window board for a smooth, durable finish in new build and renovation projects. Buy online or Click & Collect today.

WAS: per piece

WAS

£69.18 per piece (Inc VAT)

WAS: per piece

WAS

£57.65 per piece (Ex VAT)
Window Board Oak 25 x 225mm

WAS: per metre

WAS

£42.00 per metre (Inc VAT)

WAS: per metre

WAS

£35.00 per metre (Ex VAT)

These beautiful Oak timber window boards feature a smooth, neat edge that completely lifts the aesthetic of any home. Kiln dried white American oak is a hardwood, often chosen for use in furniture and cabinet making because of it's rich colour and...

WAS: per metre

WAS

£42.00 per metre (Inc VAT)

WAS: per metre

WAS

£35.00 per metre (Ex VAT)
Window Board Redwood FSC 32 x 150mm

WAS: per metre

WAS

£15.01 per metre (Inc VAT)

WAS: per metre

WAS

£12.51 per metre (Ex VAT)

FSC redwood window board for internal window installations, offering a durable natural timber finish. Buy online or Click & Collect from your local branch.

WAS: per metre

WAS

£15.01 per metre (Inc VAT)

WAS: per metre

WAS

£12.51 per metre (Ex VAT)
Window Cill Sapele Hardwood (Double Aluminium Primer) 70 x 145mm

WAS: per metre

WAS

£87.98 per metre (Inc VAT)

WAS: per metre

WAS

£73.32 per metre (Ex VAT)

Double aluminium primed Sapele hardwood window cill for external joinery and window installations. Buy online with home delivery or Click & Collect today.

WAS: per metre

WAS

£87.98 per metre (Inc VAT)

WAS: per metre

WAS

£73.32 per metre (Ex VAT)
Window Cill Sapele Hardwood (Double Aluminium Primer) 70 x 165mm

WAS: per metre

WAS

£100.61 per metre (Inc VAT)

WAS: per metre

WAS

£83.84 per metre (Ex VAT)

Primed Sapele hardwood window cill with double aluminium primer for long lasting external performance. Buy online or Click & Collect today.

WAS: per metre

WAS

£100.61 per metre (Inc VAT)

WAS: per metre

WAS

£83.84 per metre (Ex VAT)

Items 1 to 24 of 25 total

Upgrade your home’s interior with our premium window boards, designed to suit a wide range of styles and décor. Our MDF window boards feature a smooth, paintable surface, ideal for creating a modern finish. Built for strength and stability, they resist warping and offer long-lasting performance.

For a natural and timeless style, our oak window boards are a popular choice. Made from high-quality oak, they bring warmth, elegance, and character with their rich grain and texture. Whether your home is classic or contemporary, our window sill boards add the perfect finishing detail.

Window board styles

MDF Window Boards: Smooth, paintable, and perfect for modern homes.
Oak Window Boards: Natural elegance with distinctive grain patterns.
Laminated Window Boards: Hard-wearing, resistant to wear, and available in various finishes.
UPVC Window Boards: Low-maintenance, moisture-resistant, and suitable for any space.
Bullnose Window Boards: Rounded edges for a sleek, polished look.
Pine Window Boards: Lightweight with rustic charm, ideal for traditional interiors.

How to fit a window board

Fitting a window board is simple and can instantly improve both style and function. Follow these easy steps:

Measure the window sill area carefully.
Cut the window board to the correct size for a snug fit.
Apply adhesive to the underside of the board.
Press the board into place and use clamps if needed while the adhesive sets.
Seal any gaps with caulk for a neat finish.
Paint or seal your MDF window board or chosen material as required.

For more expert guidance on choosing the right window board for your home, contact your local Howarth branch today.