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Sash Windows in Glasgow
Keep the character. Lose the draughts.
Glasgow is a city built on sandstone tenements, Victorian terraces and traditional villas, and the sash and case window is part of what makes those buildings look right. Brighthome Installations supplies and fits vertical sliding sash windows that keep the original proportions, sightlines and astragal bars of your property, while adding modern double glazing, smooth operation and proper draught sealing. Every window is measured and installed by our own team, backed by a fixed written price and a 15 year guarantee.
FREE SURVEY · CONSERVATION FRIENDLY · 15 YEAR GUARANTEE · FITTED BY OUR OWN TEAM
What is a sash and case window?
A sash and case window, also called a vertical sliding sash window, is a traditional window made up of one or more panels, known as sashes, that slide vertically up and down within a fixed outer case. It is the classic window found in tenements, Victorian terraces and period properties across Glasgow. Original sashes were operated by a system of cords, pulleys and hidden weights, while modern replacements often use a discreet spiral balance instead. Brighthome Installations supplies and fits uPVC and timber sash windows across Glasgow that keep the period appearance while adding A rated double glazing, draught proofing, a free survey, a fixed written quote and a 15 year guarantee.
Why Sash Windows Belong on Glasgow Properties
On a period property, the window style is not just a detail. Get it wrong and the whole building looks off. Here is why a proper sash and case window is worth fitting, and what a modern one gives you that the original never could.
It keeps the building looking right
Sash windows preserve the vertical proportions, slim sightlines and glazing bars that define a traditional Glasgow facade. A casement window in a tenement opening looks wrong, and often is not permitted. A sash window looks like it has always been there.
Modern warmth, period looks
The sashes may look traditional, but the glass does not behave like it used to. Our replacements carry A rated double glazing and full draught proofing, so you keep the character of the original while cutting the cold spots, rattles and heat loss that come with old single glazed sashes.
Ventilation from top and bottom
A sash window can be opened at the top, the bottom, or both at once. Opening the top sash lets warm stale air escape while drawing cooler air in at the bottom, which ventilates a room efficiently without a wide opening.
No outward projection
Because the sashes slide vertically rather than swinging out, a sash window takes up no space outside. That matters on properties where a window opens directly over a pavement, a common close or a narrow lane.
Smooth, rattle free operation
Modern balances and brush seals mean the sashes glide rather than stick, and stay where you put them. No more painted shut windows, dropped sashes or the rattle of a loose pane in the wind.
Sash Window Styles and Finishes
No two period properties are identical, and the details are what make a sash window look authentic. Every window we fit is made to measure and specified to match the age and character of your home. These are the choices you will make at survey stage.
uPVC sash windows
A practical, low maintenance option that recreates the traditional sash look without the upkeep of timber. uPVC sash windows never need painting, resist the Scottish weather well and suit homeowners who want the period appearance with modern convenience.
Timber sash windows
For listed buildings and stricter conservation areas, a timber sash is often the required specification. Timber gives the most authentic finish and can be painted to any colour. [CONFIRM whether timber is offered before publishing this block.]
Astragal bars and run through horns
The thin bars that divide the glass into smaller panes are a defining feature of a period sash, and we can match the original layout with authentic astragal bars. We can also include run through horns, the small decorative projections at the base of the upper sash typical of Victorian and Edwardian windows, to keep the traditional detailing correct.
Colours and finishes
Choose from white, cream, heritage colours and a range of realistic woodgrain foils. Traditional off whites and darker heritage shades often suit period Glasgow properties better than a bright modern white.
Glazing and security
A rated double glazing comes as standard, with slim profile units available where a conservation specification calls for a narrow sightline. Every window is fitted with quality locks and hardware for modern security.
Conservation Areas and Listed Buildings in Glasgow
A large number of Glasgow properties sit within conservation areas, and many are listed. In those cases, replacement windows usually have to match the original in style, materials, sightlines and the way they open, and you may need consent from the local authority before work begins. It is easy to fall foul of the rules without realising, and putting the wrong windows into a protected building can mean being told to take them out again. This is where dealing with an installer who knows the local picture matters. At survey stage we will tell you whether your property is likely to sit within a conservation area or be listed, what specification is likely to be acceptable, and how to approach any consent you may need. We would always rather have that conversation before you order than after you have paid.
Anyone Can Sell You a Window
A sash window sits in an old opening that is rarely square, in a building that has moved over a century or more. Fitting one properly takes care, patience and an eye for the period detail. The survey, the fitting and the finish are what decide whether it looks right and works smoothly, and that is the part we are named after.
Fitted by our own team
The people who survey your home are the people who fit it. No unfamiliar subcontractors on the day, and no passing the blame if something is not right.
A fixed written quote
You get an itemised price in writing after the survey, and that is what you pay. No pressure to sign on the spot, no manager phone call, no vanishing day one discount.
Respect for the original detail
We work to match the sightlines, bars and proportions of your existing windows, so the replacements sit in keeping with the building rather than standing out from it.
A tidy site and a proper finish
Dust sheets down, old sashes removed and recycled, internal and external sealing done properly, and facings made good. We leave your home cleaner than we found it, and your 15 year guarantee covers both the product and our workmanship.
From Survey to Sign Off
Free survey
We visit at a time that suits you, measure each opening precisely and assess the existing sashes, bars and proportions. Around 45 minutes, no obligation. We will also flag whether your property is likely to be in a conservation area or listed.
Fixed written quote
An itemised, fixed price quote, usually within 2 working days, specified to match your property. No pressure to decide.
Manufacture
Your sash windows are made to measure to the exact sizes, bar layout and detailing agreed. Typical lead time is 2 weeks.
Installation and sign off
We fit with care around the existing opening, make good the finish, walk the job with you, hand over your guarantee documents and stay reachable afterwards.
WINDOWS SCRAPPAGE SCHEME
Old, draughty single glazed windows cost you money every month in wasted heat. Our windows scrappage scheme helps you do something about it. Trade in your tired old casement windows and we will take £2,500 off the price of your energy efficient replacements, then remove and responsibly recycle the old ones as part of the job. It is a straightforward way to make a warmer, quieter home more affordable, while keeping your old frames and glass out of landfill.
Sash Window Installation Across Glasgow
Brighthome Installations fits sash and case windows throughout Glasgow and the surrounding towns, including [the West End, Southside, Dennistoun, Shawlands, Pollokshields, Hyndland, East Kilbride, Paisley, Hamilton, Bearsden, Bishopbriggs and Newton Mearns]. We work regularly on tenement flats, Victorian terraces and traditional villas across the city, where keeping the period character right is exactly the point. If you are just outside that area, get in touch and we will tell you straight whether we can cover you.
Sash Windows in Glasgow: Common Questions
Sash windows cost more than standard casement windows because of the sliding mechanism, the detailing and the care needed to fit them into old openings. We provide a fixed written quote after a free survey.
Often, yes, but the specification may be restricted. Many conservation areas will accept a sympathetic replacement that matches the original style, sometimes with slim profile double glazing to keep the narrow sightlines. Listed buildings are stricter and may require timber. We will advise at survey stage what is likely to be acceptable for your property, and you should always confirm the requirements with the local authority.
A sash window slides vertically up and down within a fixed case. A casement window is hinged at the side and swings outward. Sash windows suit period and tenement properties where the traditional vertical sliding style is expected or required, while casement windows are the more common and often more affordable choice for standard modern homes.
[CONFIRM. If both: We offer both. uPVC sash windows give you the period look with low maintenance, while timber sash windows provide the most authentic finish for listed buildings and stricter conservation areas. If uPVC only: adjust this answer and the styles section accordingly.]
No. Old single glazed sashes are draughty because they lack seals and the glass is thin. Our replacements include brush pile draught seals around the sashes and A rated double glazing, so they keep the traditional look without the cold, the rattle or the heat loss.
Yes. Our sash windows retain the traditional dual action, so you can open the top sash, the bottom sash, or both, exactly as the originals were designed to work.
Timescales depend on how many windows are being replaced and the condition of the existing openings, but most sash window installations are completed within one to a few days. We confirm the timescale in writing before we start.
Every installation is covered by a 15 year guarantee on both product and workmanship, backed by independent warranty association. Your guarantee documents are handed over on completion.
Ready to Restore Your Sash Windows?
Book a free, no obligation survey and we will assess your existing windows, talk through the specification that suits your property, and give you a fixed written price. No pressure and no salesperson camped in your living room until nine at night, just honest advice and a proper job that respects the building.
Free survey · Fixed written quote · Conservation friendly · 15 year guarantee
Other Window Styles We Fit
Sash and Case Windows
Traditional vertical sliding sash windows for tenement and conservation area properties, with modern double glazing.
Casement Windows
The most popular window in Glasgow. Wide opening, tight weather seal and a style for every property.
All Windows
Browse the full range of window styles we supply and fit across Glasgow and the west of Scotland.