'Alternative to Timber' and Aluminium windows & doors
Timber Windows


Blackthorn Timber Windows supply and install timber windows within the Leeds area, and we offer the most comprehensive range of wooden windows in quality softwood or hardwood.

Quality Timber Windows with a 30 Year Guarantee
Timber Windows

We provide a wealth of information on our website about timber windows, but we'd be happy to visit your home or arrange a call-back.

We have a no pressure approach to meeting our customers and we always send written quotations following a visit. We understand that these projects sometimes take a while to get off the ground and we know that our customers don't want to be hassled so we simply send the quotation and wait. Some customers come back within a week, others take a month or even a year and that's fine.

Below you'll find a selection of work we have undertaken in the Leeds area, supplying and fitting timber windows.

Gothic-Arched Sash Windows

These are double-glazed timber sash windows made to completely replicate the appearance of the original single-glazed windows at this late-Victorian property near Leeds. As with the original windows, the box frame is square whilst the upper sash is shaped to follow the contours of the sandstone lintel above. This installation in April of 2016 was the 2nd phase of work carried out at the property - something that is fairly typical for larger projects.

Casement bay windows in Leeds

This large house in Roundhay, Leeds has retained its original character and charm with internal oak panelling and an unusual mix of square- and diamond leading to the glass. We took great care to recreate exactly the dimensions of the leaded lights and to ensure that they were distributed evenly across the windows as well as vertically.

Timber casement windows in Leeds

The stormproof casement windows were finished in a pale cream Gardenia to the outside and white internally, whilst the black antique leading was further enhanced by the use of hand-forged black 'monkey-tail' handles.

The new wind ows, whilst looking almost identical to the originals, reduce heat loss by over 70% and also reduce road traffic noise by over 25dBA.

Old-Style Flush Casement Windows in Leeds

As an alternative to our usual friction-stay hinges we also offer our flush casement windows with traditional butt hinges, complete with the same security multi-point locking. Hinges are available in black and silver. Most customers choosing this design opt for hand-forged black handles with matching peg-stays.

Cottage-style Casement Windows

The character of this very old property in North Yorkshire has been retained with the use of our narrow timber glazing bars on Stormproof Casement windows to give a design to match the much older porch windows which was not changed in this phase of work.

We also installed a new high-performance half-glazed door as part of the project.

The windows and the and the new entrance door feature high-security multi-point locking and the cottage-look is further enhanced with the specification of hand-forged black handles to the door and the windows.

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