25mm Chamfer Window Sill

Availability: In stock

Your Chamfer 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.

Chamfer-edged solid oak window sills, expertly machined in our UK workshop by our experienced joiners, in your choice of length and width.

  • All sills come machined and sanded, ready to finish
  • Length increments in 0.3m to save on costly timber waste
  • Kiln dried and seasoned oak, for durability and longevity
  • If your sills need trimming to width and length, we can do that for you
including VAT & free delivery
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Technical Specs

Read all about the specifications of our chamfer edge window boards, including available sizes, finishes and optional extras.

Window Board

0.6-2.4 metres (2-8 feet)
200-300mm, wider on request
Solid Oak
Unfinished, sanded

Optional Extras

Cut to Size
Our solid oak window sills can be trimmed to size at no added cost
Wax Finish
Choose from our range of wax finishes and we'll provide your window board ready to fit
Profile Returns
Choose 'profile returns' and we’ll profile both ends of your window board

Oak Species

American White Oak (Quercus Alba)

Key Features

We pride ourselves on machining and supplying some of the best oak window sills that money can buy. Here are a few of the features that make your buying decision a whole lot easier.

All the hard work done

We make sure that every oak window board that we send out is machined perfectly and sanded, ready to fit as soon as it arrives.

No excessive waste

We hate to waste beautiful natural Oak, and we wouldn't want you paying for it either. Our oak window boards are available in 300mm increments.

Very best solid oak

Every oak window board we produce uses only the best solid Oak, with fantastic grain detail and colour, along with durability that will last.

We'll trim to size

We understand that you might want your Oak window board made to the exact size they need, rather than trimming yourself. We'll trim at no cost.


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 my window sills be cut to size?

Yes they can. Choose the next size up to the dimensions you need and then enter the sizes you’d like the window sills trimmed to in the appropriate section of the ordering options box.

How much will it cost to get my sills delivered?

We like to keep things simple which is why all of our products are provided with free delivery. The price you see when selecting the options on most of our items is the exact price you pay.

Can I choose to have my window sills sanded?

No need; all of our window sills are sanded after machining to ensure a perfect finish.

Customer Reviews

All of our reviews are by 100% verified customers.

Based on 2 reviews Write a review

Customer Reviews

Based on 28 reviews
Ashley Bamforth (Skelmanthorpe)
Oak window cills

Great product, good customer service whilst asking a question. Saved the seller for my future building projects!

Thanks Ashley, I'm glad that you're happy with your purchase. Looking forward to hopefully seeing you return sometime soon!

TJE (Birmingham)
Oak Window Board

Beautiful quality and arrived well packaged, it looks super. Finished with 2 coats Osmo Poly-oil.

Looking really good! Thanks for taking the time to send some pictures through the process of installing your oak window board. It looks excellent now fitted!

M Chambers (Royal Leamington Spa)
Great service

Good communication and Jason helped me out of a jam with a speedy replacement

No problem, glad I could help. Thanks for the review :)

Helen Hall (Newcastle-under-Lyme)
Oak window sills

Beautiful solid oak window sills, excellent quality, look amazing fitted.

Your window boards look fantastic now fitted Helen! Thanks for posting some photos for us, I'm glad that you're pleased with them :)

Dean Small (London)
25mm Chamfer Window Sill

Lovely piece of wood, as described. Well packaged. I bought the oak natural and stained with linseed oil.

Looks fantastic in situ, thanks for the review and photo Dean. I'm glad you're happy with your oak window board and you know where we are should you ever need anything else.

Jay Roan (Milton Keynes)
Fast turnaround and great product

Fast turnaround and great product

Thanks Jay, I'm pleased that we could help and you're happy with the oak window board.

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