MDF Windowsills

MDF Window Sills – Moisture-Resistant MDF Window Boards

Our MDF window sills provide a practical and versatile solution for finishing interior window openings. Manufactured from industrial-grade moisture-resistant MDF, these MDF window boards feature a smooth, hard-wearing surface that is ideal for creating a neat, professional finish in both modern and traditional homes.

Supplied pre-sanded and unfinished as standard, our MDF window sills can be painted or treated to complement your existing interior woodwork, window frames and décor. White priming is also available as an optional extra, giving you a convenient starting point for your decorating project.

Available in a Range of Sizes and Finishes

Our MDF window sill boards are available in a selection of thicknesses, widths and lengths to suit different window openings and installation requirements. Choose from thicknesses of 18mm, 25mm, 30mm and 36mm, with widths ranging from 100mm to 600mm and a selection of board lengths up to 4.2 metres.

You can also choose between square-edged and bullnosed MDF window sills, allowing you to achieve the look that best suits your project. Whether you are replacing existing window boards, renovating a property or completing a new build, our range offers flexibility for a variety of interior applications.

Why Choose Our MDF Window Sills?

• Moisture-resistant MDF: Manufactured from industrial-grade moisture-resistant MDF for a durable, smooth finish.
• Pre-sanded surface: Supplied ready for your chosen finishing treatment.
• Optional white priming: Available as an additional option to help prepare your boards for decorating.
• Choice of edge profiles: Select square-edged or bullnosed window sills.
• Multiple dimensions: A range of thicknesses, widths and lengths to suit your requirements.
• Bespoke options: If you cannot find the size you need, contact our team to discuss a bespoke window sill.

Order MDF Window Sills Online

At Skirting Boards Direct, we supply quality MDF window sills and window boards for home improvements, renovations and trade projects throughout the UK. Select your required dimensions, edge profile and finishing option to find the right MDF window sill for your installation.

Please allow up to 15 working days for production of our window sills. If you require a non-standard size or have specific project requirements, call our team on 0121 344 4427 to discuss the available options.

For a coordinated interior finish, explore our complementary ranges of MDF skirting boards and MDF architrave.