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


Blackthorn Timber Windows supply and install timber windows within the Yorkshire 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 Yorkshire area, supplying and fitting timber windows.

Traditional Style Timber Windows

Traditional Flush Casement

Here's a great example of a really traditional look combined with modern thermal efficiency and high security from a recent installation near Doncaster, South Yorkshire. Externally the windows are flush casements with extended frame details made from engineered Redwood timber. Meanwhile, the traditional privacy glass is made into A-rated double-glazed units, whilst the hand-forged monkey-tail handles and stay arm combine with high-security multi-point locking. The best of the old with the best of the new!

Stained Glass Feature Window in Harrogate

This wonderful feature window looks like it had previously been adapted from original sliding sash windows, probably some time in the 1930's judging by the design.

With such a large area of glass these windows were freezing in winter so our customer wanted to make the room more habitable whilst losing none of the characters.

encapsulated stained glass timber window

We installed new direct-glazed timber casement window frames with 28mm double-glazed units incorporating the original stained glass in the cavity between the panes. Colour-matched timber trims were then added around the window to perfectly blend the new windows in to the old surround.

Timber Sliding Sash bay window in Harrogate

This is an unusual bay window on a stone-built house in Harrogate, North Yorkshire. Five individual sliding sash windows were joined together with angled bay posts to form the bay. The roof was in good condition and was not disturbed.

Also unusual for sash windows, these had projecting cills, which had to be cut and mitred together on-site. This is an installation job that demanded skill, accuracy and attention to detail and demonstrates why we employ time-served joiners and not "window fitters".

Timber Sash Windows in Ripon, North Yorkshire

Most of the sliding sash windows that we replace are fitted into a deep reveal so that the front face of the window is 100mm or so behind the face of the brickwork. In many parts of North Yorkshire however this isn't the case and the window is almost flush with the brick.

As always we aim to replace like-with-like and so these Slimline Sash windows were fitted in the same way.

Traditional Sash Windows near Harrogate

This mid-terrace townhouse near Harrogate, Yorkshire has been restored to its former appearance by the addition of multi-pane double-glazed timber sash windows. These replaced some inappropriate top-hung casement windows that did nothing for the look of the property.

When the new home-owners moved in, they wanted to return the house to its original appearance and were able to show us an old sepia photo dating back to the early 1900's where all of the houses in the row had small-paned sliding sash windows.

The mortar between the bricks was quite yellow and so the choice of Light Ivory paint goes very well with this.

Sliding sash windows in Yorkshire

The old red brick walls of this farmhouse just to the east of York are beautifully complemented by the choice of colour (Farrow and Ball 'Shaded White') of these double glazed sliding sash windows.

Made in redwood timber, with sash horns to both the upper and lower sashes and fitted with polished chrome hook-lifts and fitch fasteners, we installed 30 sash window, a pair of casement windows, a set of timber French doors and 3 timber entrance doors on the job.

New Timber Double-glazed Windows To Replace Old Steel Windows

The North York moors have been a well-loved destination for holiday-makers for generations. This installation, in the tiny hamlet of Danby, north of Whitby and close to Stockton, Yarm and the end-of-the-line destination of Saltburn was into a holiday cottage that has been in the same family for 70-plus years!

Our challenge here was to install new timber double-glazed windows to replace old steel windows. The windows are not tall and natural light is at a premium within the cottage. Steel windows are obviously strong and so can be made with narrow frame sections so we had to maintain the looks of the cottage and maximise the amount of natural light at the same time.

This timber casement window bay comprised 5 elements with the opening lights kept to the two end sections. The centre sections are direct-glazed for maximum light. Finished in a very appealing cream, the view from inside this bow window is magnificent.

Timber Casement Windows Installed In Rural Yorkshire Property

The Wisteria had just finished flowering on this beautiful rural property near Harrogate when we completed the installation. We installed timber casement windows complete with narrow timber glazing bars to maintain the cottage's look and appeal. Glazed with low-emissivity glass and argon-filled sealed units the heat-loss has been reduced by over 70%.

These stormproof casement windows can be supplied in softwood, sapele or oak and all come with extensive product and installation warranties.

In addition to the wooden casement windows we also installed 2 pairs of hardwood French doors, 1 of which replaced a window to open up a room to the garden.

Barn Conversion With Arched Windows

This barn conversion project near Richmond in North Yorkshire had lots of arched windows - some well over 3m tall - plus tilt-in-only windows, timber casement windows and a lovely pair of engineered timber French doors.

We used hardwood timber soles on the ground-floor windows because of an existing problem of damp conditions. The age of the property meant that modern window and door handles would look out-of-place so we used hand-forged black 'wrought iron' fittings which worked very well.

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