Custom Window Sills & Window Boards

Order your window sills to your exact dimensions with our wide variety of sizes. And if our standard sizes don't quite fit, you can get in touch for custom sizing and a bespoke quote on 0121 328 2179 or info@skirtingworld.co.uk.

As standard, we offer 18mm and 25mm thicknesses for our window boards, as these are the most common sizes found in UK properties.

Primed And Ready To Paint

Select our primed finish and rest assured that your window sills will be ready for a top coat of paint on delivery. Our priming service applies 2 coats of water-based primer for a smooth and even finish. Our woodworkers also sand the boards prior to priming to make sure you have a clean and imperfection free surface to work with.

Bullnosed Front Edge

Our window sills are bullnosed on the front edge as standard. However, we can also leave them square if you wish.

The bullnose is a full round - starts on the top face and goes all the way round to the bottom face.

Frequently Asked Questions

• Is it window sill or window cill?

  Both "window sill" and "window cill" are different spellings of the same word, which means a horizontal slat that forms the base of a window. "Window sill" is the more common spelling, especially in British and American English. Whereas "window cill" is a later variant that is rarely used. They are also called "window boards" and if extended far enough they can become "window seats".

• Where do you use a window sill?

  Window sills are generally fitted to the ledge of a window, being the horizontal surface of the interior or exterior side of a window. However, many choose to use as material for shelving and bookcases. MDF (Medium-Density Fibreboard) Window Sills can't be used externally, however UPVC (Unplasticized Polyvinyl Chloride) is used for exterior window sills due to its moisture resistant properties. When applied externally, they slope down slightly to drain away rain water and direct it away from the house.

• What is a window sill?

  A window sill is a flat piece of trim found at the base of a window. It provides structural support for the window frame and helps to prevent warping. Exterior window sills direct water away from the house and keep the frame well-insulated. Many window sills extend outwards from the wall as decorative features and to make space for ornaments such as framed photos or exterior bird feeders. Window sills can also be used as bookshelves, a window seat and a home for potted plants.

• Is plastic or MDF better for window sills?

  Both Plastic and MDF have their Pros and Cons. Plastic (UPVC) window sills are resistant to scratches and moisture, especially direct rainfall, making them most suitable for exterior use. Whereas MDF provides a better finish, especially if painted, making them ideal for interior use.

• What is the best type of window sill?

  The best type of window sill for you will depend on your needs and budget. If you are looking for a durable and weather-resistant sill, then plastic or UPVC is a good option. If you are looking for a sill that is easy to maintain and looks good, then MDF is a good choice. Ultimately, the best way to decide which type of sill is right for you is to consult with a professional.

• What can I use instead of wood window sills?

  There are many different materials that can be used instead of wood window sills. Some popular options include: MDF, UPVC, Stone, Concrete and Metal. The best material for you will depend on your needs and budget. If you are looking for a durable and weather-resistant sill, then plastic or UPVC is a good option. If you are looking for a sill that is easy to maintain and looks good, then MDF is a good choice. Ultimately, the best way to decide which type of sill is right for you is to consult with a professional.

• How much overhang should a window sill have?

  The amount of overhand that a window sill should have will depend on the size of the window and the type of sill that is being used. In general, a window sill should extend at least 1 inch beyond the window frame. This will help to protect the window from the elements and prevent water from seeping into the home.

• Do you fit window sills before plastering?

  It is generally recommended to fit window sills before plastering. This is because it can be difficult to fit a window sill after the plaster has been applied. If you do need to fit a window sill after the plaster has been applied