Some windows are worth keeping
Sash & case windows restored, double glazed or made new.
Warm, quiet windows that keep your home's character, for listed and period homes across Central Scotland. Family run in Glasgow for more than thirty years, and trusted from tenement flats to Edinburgh City Chambers.
4.7 on Google from 48 reviews
Family run, 30+ years, thousands of jobs
£5m insured, SafeContractor approved
Working with conservation authorities across Scotland
Our approach
Restore. Upgrade. Renew. The survey tells us which your windows need.
A hundred year old sash was cut from slow grown timber that is denser and more durable than most timber sold today. Where the window is sound, we restore it: rot spliced out, cords and weights renewed, draught proofing fitted, repointed and repainted.
Where you want modern warmth without losing the original look, we keep your existing case in the wall and make new double glazed sashes for it in our own Glasgow workshop, matched to the original sections and sight lines.
And where a window is truly beyond saving, we manufacture a complete new sash and case window, single or double glazed, so the character of the building survives.
What we do
One trade, done properly, three ways
Every job begins the same way: a window by window survey, a clear written quotation, and an honest recommendation for the right route — restore, upgrade or renew.
Restoration & repair
Your original windows, brought back. Rot spliced out and sills renewed, cords and weights rebalanced, Aquamac draught proofing, security locks, then traditional pointing and full redecoration. Backed by a 5 year guarantee.
Restoration
Double glazing upgrade
Your original case stays in the wall. We manufacture new slimline double glazed sashes to match the existing sections and sight lines: modern warmth and quiet, with nothing changed to the eye.
Upgrade to double glazing
Complete new sash windows
Made to order in our Glasgow workshop, single or double glazed. Hardwood, softwood or Accoya, painted in any colour or finished in one of over 70 stain combinations, backed by a 10 year guarantee.
New windowsWe also supply trade customers across the UK and Ireland with made to measure sash and case windows. Trade enquiries
Featured project
Castlemilk Hall, Carmunnock
Gifted to the community in 1893, the village hall in Carmunnock, Glasgow's last remaining village, is being repaired and restored with a major grant from Glasgow City Heritage Trust. We were awarded the restoration of its sash and case windows.
Our apprentice Demi Bushi worked on the hall alongside our foreman Hugh O'Donnell, learning the trade on a live heritage job. The trainees' part in the project was featured in the Glasgow Times.
- Original sash and case windows restored, not replaced
- Carried out in collaboration with Glasgow City Heritage Trust
- Apprentices trained on a live heritage project
Entrusted with
The buildings Scotland protects
Some of the listed and public buildings whose sash and case windows we have worked on.
- Edinburgh City ChambersEdinburgh
- Scotland Street School MuseumGlasgow
- Royal Exchange SquareGlasgow
- Merchiston Castle SchoolEdinburgh
- The High School of GlasgowGlasgow
- University of StirlingStirling
- Clackmannan Town HallClackmannanshire
- Castlemilk Hall, CarmunnockGlasgow
- Former Globe Hotel, 28 High StreetPaisley
- St Peter's RC Church, PartickGlasgow
- Fairfield Shipping OfficesGovan
- Wasps Artists' StudiosGlasgow
We also work on town halls, tenement flats, terraces and villas throughout Central Scotland, and in 2025 demonstrated the trade to the next generation at Perth and Kinross Heritage Trust's Traditional Building Skills Roadshow.
The full specification
What a refurbishment includes
Whether we are restoring your existing sashes or fitting new double glazed ones into your original case, there are no hidden extras: traditional pointing and painting are part of the job, not an optional add on.
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New waxed cotton cords, pre stretched so they will not sag or rot, matched to the pulley and balanced with the original cast iron weights. Chains fitted where sashes are heavier.
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The Aquamac seal system, carried with a lifetime guarantee and compatible with paint and stain. It closes gaps that together can equal a three inch hole in your wall, so rooms hold their heat.
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Rotting sills and rails are cut out and renewed in treated redwood, spliced in with time served joinery so the repair disappears into the original window.
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Cracked and broken panes replaced like for like, with period appropriate glass for historic buildings, or upgraded glazing where the building allows it.
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The joint between case and stonework is raked out and repointed by hand in burnt sand and linseed oil mastic, in blonde or red to match your stone.
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Our own qualified painters finish inside and out in microporous external paint with up to a 14 year life span, cut cleanly to the pointing edge.
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Push button key release locks, Weeks locks that allow three to four inches of secure ventilation, and sash bolts, fitted in brass or chrome.
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Brass simplex fittings let the lower sash swing inward for safe cleaning from inside — what Scottish building standards expect for windows more than 4 metres above the ground.
The schedule of works
Six stages, in the right order
The same sequence conservation joiners have followed for generations. Each trade finishes before the next begins, and the site is left tidy every evening.
Survey
A free, on site inspection. Every window is assessed and scheduled individually, so you only pay for the work each one actually needs.
Joinery
Decayed timber is spliced out and replaced with matching sections. Sills renewed in treated redwood, sashes eased, cords and weights rebalanced.
Glazing
Original glass is kept wherever possible. Cracked panes are replaced like for like, or upgraded where the building and regulations permit.
Draught proofing
Discreet Aquamac seals are fitted to the sashes. Rattles stop, heat stays in, and the window still slides exactly as it should.
Pointing
The joint between frame and stonework is raked out and repointed in traditional burnt sand and linseed oil mastic, sealing the case against Scottish weather.
Decoration
Full internal and external painting is included as standard, so the finished window is ready to live with, not a job half done.
Our work
Windows we have brought back
Restored originals, existing windows upgraded with new double glazed sashes, and complete new windows made in our workshop — all across Central Scotland.
In their words
“I live in an A listed Alexander Greek Thomson flat and my sash windows had strict regulations to follow. Listed Window Refurbishment took everything into consideration and did an incredibly professional job. Their craftsmanship is outstanding and the team were a pleasure to work with.”
Debbie Ross · A listed Alexander Thomson flat, Glasgow · Google review
★★★★★
“Their joinery, pointing and painting teams were professional, courteous and very helpful, explaining everything. The result is lovely to look at, easy to use and maintain, and very well draught protected.”
★★★★★
“Our house, which always felt cold, even in the summer, is so much warmer and the windows look fantastic. All the guys were really friendly, meticulous with their work, and made sure there was minimum disruption.”
★★★★★
“I'm so pleased with my sash and case windows, the difference in the look and the amount of light coming in. No one noticed I've changed them, they look like they've been here forever. My house now feels how it should.”
★★★★★
“We had all our windows replaced with narrow gauge double glazed sash windows which swung inside for easy cleaning in our tenement building. They were excellent quality, so much so, our neighbour had theirs done too. Those windows sold our flat.”
4.7
48 Google reviews
Who you are dealing with
A family firm, not a franchise
Listed Window Refurbishment Ltd is family run, with more than thirty years in the sash and case trade and a limited company since 2006. We refuse quick fixes: our name goes on every window we touch, and our reputation depends on it still running sweetly in twenty years.
Employed tradesmen only
Everyone on your job is directly employed by us: time served tradesmen and the apprentices they train. Our operatives carry valid CSCS cards. We are CITB registered, and we do not use subcontractors.
SafeContractor approved
Our health and safety arrangements are independently assessed by SafeContractor, and we are covered by £5 million public liability insurance, with documents available on request.
Daily site liaison
A General Liaison Officer, your single point of contact, keeps you updated every day the job runs, and we work hand in hand with conservation and listed building authorities.
How to reach us
One workshop, three local lines
Call the line nearest you. Every window we make or restore passes through our own workshop in Glasgow's East End.
Glasgow
Unit 14, 70 Strathclyde StreetGlasgow G40 4JR 0141 556 3327
Mon to Thu 8:00 to 16:30 · Fri to 15:30
Stirling line
Covering Stirling,Perth and Dundee 01786 290 013
Mon to Thu 8:00 to 16:30 · Fri to 15:30
Where we work Glasgow · Edinburgh · Stirling · Perth · Paisley · Motherwell · Kilmarnock · Dundee · Ayrshire · Lanarkshire · Renfrewshire · Fife and throughout Central Scotland.
Common questions
Answers before you ask
Can original sash and case windows be double glazed?
Yes. Your original case stays in the wall and we manufacture new slimline double glazed sashes for it in our Glasgow workshop, matched to the existing sections and sight lines. You get modern warmth and noise reduction with nothing changed to the eye. In a listed building this needs listed building consent, and we help with the application, drawings included.
Do you work on listed buildings and in conservation areas?
It is our speciality. We have worked hand in hand with conservation and listed building authorities across Scotland for more than thirty years, on buildings from tenement flats to Edinburgh City Chambers and Scotland Street School Museum. Where permission is needed, we help with the application, drawings included.
My sash windows are rotten — do they need replaced?
Usually not. Decayed timber is spliced out and renewed in treated redwood using time served joinery, sills are replaced where needed, and cords and weights are rebalanced. Where a window truly is beyond saving, we manufacture a complete new sash and case window to match, single or double glazed.
How much does sash window restoration or double glazing cost?
It depends on each window, which is why we do not publish a price list. The size of the window, its condition, how easy it is to reach (upper floors can need scaffolding or access equipment), how many windows there are, whether you restore, double glaze or replace, and whether the building is listed all change the cost. So every job starts with a free survey and a written, itemised quotation for each window, and you only pay for the work each one actually needs. Traditional pointing and full painting are included as standard: there are no hidden extras. See what affects the cost.
Do I need permission to change my windows?
Like for like work generally does not: repairs, and new single glazed sashes made to match the originals exactly as part of a refurbishment. Changing the design or glazing, such as new double glazed sashes, or replacing whole windows in a listed building needs listed building consent (in Glasgow, planning permission too for replacement windows), and in a conservation area a change to how front windows look needs prior approval. Our guide to listed buildings and double glazing sets out the rules for Glasgow and Edinburgh, and we help with the application, drawings included.
Can I get help paying for the work?
We do not offer finance ourselves, but help is often available. Home Energy Scotland offers interest free loans of up to £8,000 for replacing single glazing with double glazing, where your home's energy certificate recommends it, and a draught proofing grant can be added alongside. You must have Home Energy Scotland's written offer before any work starts: see funding for sash windows in Scotland.
What areas do you cover?
We work across Central Scotland from our Glasgow workshop, with local lines for Edinburgh and Stirling, including Perth, Paisley, Motherwell, Kilmarnock, Dundee, Ayrshire, Lanarkshire, Renfrewshire and Fife. Trade customers are supplied across the UK and Ireland.
Your windows have lasted a hundred years. Give them another hundred.
Free surveys, written itemised quotations, and never any obligation.
Arrange a free survey
Not sure whether to restore, upgrade or renew? Let us have a look.
Tell us a little about your windows, with a photo or two if you have them, and we will call you back to arrange a visit.
You enquire
Send the form, with photos if you have them, or phone us. We aim to call you back the same working day.
Free survey
We visit at a time that suits you and assess every window individually.
Written quote
A clear, itemised quotation with no hidden extras — and never any obligation.