20mm Bullnose Window Sill

Availability: In stock

Your Bullnose Window Sills will be dispatched between and (+1 day if choosing our waxed finish option) with free next day delivery.

*NEW* 'Priority' option now available during checkout for faster dispatch.

Expertly machined and hand finished 20mm bullnose window boards, made from high quality solid oak. Unbeatable quality, price and service on all oak window boards, with custom options too.

  • All oak window boards arrive sanded, ready to finish
  • Order lengths in 300mm increments to save on costly waste
  • Available to be trimmed to length and width needed
  • High quality solid kiln dried oak
including VAT & free delivery
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Technical Specs

Our bullnose window boards are ever-popular among our customers, and for good reason. Unrivalled in quality, value for money and optional extras.

Window Board

0.6-2.4 metres (2-8 feet)
200-300mm, custom orders welcome
Solid Oak
Unfinished, sanded

Optional Extras

Trimmed to Size
Provide us with your exact window board measurements and we'll machine and sand your sill to your exact size
Profile Returns
Choose the 'Profile returns' option and we'll machine the same profile to the left and/or right hand edges
Wax Finish
Choose one of our exceptional wax finishes and we'll deliver your window board 'finished' to your spec

Oak Species

American White Oak (Quercus Alba)

Key Features

Our bullnose window sills are machined with great attention to detail, and finished to an excellent standard. Here are just a few of the features that we offer.

All of the hard work done

All of our oak window boards arrive ready to install. Machined and sanded, and optionally waxed finished.

High quality solid oak

100% solid oak, no veneers! Hand picked American White Oak with natural beauty and durability.

Cut to size available

At no extra cost to you, we can trim your oak sill to size, so it arrives ready to fit and perfectly finished.

Reduce costly waste

To help save on costly oak waste, you can order your solid oak window board in increments of 0.3m (300mm).


We understand you might have a few questions you'd like answering before ordering. Here we list a few of the most common one's, though you're welcome to contact us should you have something else to ask.

Can you trim my sills to the size I need?

Yes, that's not a problem. Simply choose the next size up in our options and enter the dimensions you'd like your bullnose window board to finish in the 'Trimmed to size' box.

How much will delivery be?

All of our oak window boards include free delivery. The prices you see displayed on the product page are what you'll pay including VAT. No hidden costs during checkout.

Do I need to sand the window boards?

Every window board that we send out is machined and sanded, ready to fit when it arrives. We can even wax finish your oak sill for you too.

Customer Reviews

All of our reviews are by 100% verified customers.

Based on 8 reviews Write a review

Customer Reviews

Based on 35 reviews

20mm Bullnose Window Sill

Thanks for the 5 stars!
20mm Bullnose Window Sill

A well-packed, well-finished piece of oak sill arrived in good time. All ready for a coat of varnish, wax or oil - looks good, nice grain, very pleased.

Thank you for the review Mike. Good to hear that you're pleased with your oak window board :)
Oak bullnose sills

Excellent quality oak sills supplied on time, turned up well wrapped and protected. Very happy would use again.

Excellent, thank you Greg. Great to hear that you're happy with your order. Hopefully see you return sometime soon.
Fast and faultless service

I purchased two 2.4m window sills with a bullnose edge as the easiest way to get 6 x 80cm oak shelves to go in an alcove. They arrived early in superb packing with no blemishes. I was particularly pleased with the finish and the colour matched the WEB site palette spot on. They look great.

I'm glad we could provide exactly what you were after John! It's always great to hear from happy customers, and thank you for taking the time to provide a review. Please get in touch if you ever need anything else.
Great service, good to order wood with very little waste

My window sill came well packaged and there was very little waste as there are a lot of size options. It was easy to order and arrived quickly.

Thanks for the feedback Roger. We try to make ordering window sills from us as complete as possible, with multiple size options, cut to size service and so on, so I'm glad that you found ordering from us easy :)
Good quality

Nice piece of wood, cut as ordered. Good service.

I'm glad that you're pleased with the oak sill Ewa. Let me know if you ever require any other pieces.

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