box sash willy's joinery ltd

We are a family run business and have been established for over 20 years, priding ourselves on our enviable reputation for providing excellent service and a high standard of workmanship.


As we offer a delivery service we can profess to have acquired a prestigious amount of repeat business nationwide.


We recognise that the key to long-term success is QUALITY and SERVICE and we are confident that you will be pleased to do business with us.


In addition to this we also ADVISE, INSTALL, RENOVATE, REFURB & DRAUGHT PROOF.

We ensure your box sash windows will be in full working order to a highly professional traditional standard.

Or if you are into DIY we can provide all ironmongery, sash cords, weights etc all you would need for refurbishing your sashes.

Modern technology and craftsmanship means you get precise fitting vertical sash windows traditionally made by craftsmen.


Noise, weather and drafts are all reduced dramatically with our window.


The design sympathetically copies all dimensions of the traditional wooden windows making these beautifully slim.


4-16-4 K Glass

Box depths are traditional 135mm - This will not protrude into your room if replacing a traditional box.


Our design of timber box sash window copies, almost exactly, a traditional box sash, but will be double glazed to Part L standards. All bars and meeting rails are exactly the same as the original.


The sealed unit has a 16mm air gap which complies with Part L, therefore we do not rely on argon gas, that may have a tendency to escape, which results in the window not complying with regulations.


Also as an added feature the beauty of natural wood in a slim design means you can fit our ‘sashes only’ into an existing box frame. “Amazing” but true.

Our Sashes only

Still complying with the Part L regulations our sashes will fit into your existing frame.

Enabling you to upgrade your window to double glazed without the necessity and costs of ripping out your old box, should it still be in good condition.

This is unique to us - all other companies double glazed sashes are 57mm wide, ours are 45mm.
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