Our Square MDF Window Board is moisture resistant as standard
You are looking at our Square Window Board (also known as square window cills) - used by both professionals in the trade and the general public. Whether you use the 18mm thick or the 25mm thick boards - they're all really high quality and are suitable for almost any indoor application.
Please note: all of our mdf window boards are now manufactured using our premium HDF (moisture resistant compared to MDF).
Because of the simplicity of the window board, they're a breeze to clean!
Don't be confused by the term window board - they're often referred to as window cills (which is also spelt window sills!).
Not for external use - these are strictly internal window boards.
Want some more information? Check our our 'What Is A Window Board' page.
Profile: completely square
Size: Product sold in lengths 600mm - 4200mm in sizes 150mm - 400mm (widths). The thickness can be 18mm or 25mm. If you require a bespoke window board / cill size, just let us know. We can pretty much do any size you require (excluding thickness).
Finish: The primed finish will require an undercoat and final paint finish. The undercoated finish may require a final paint finish.
Tongue: If you need a tongue at the back of the board, get in touch before placing your order.