Vertical sliding sash windows – also known as sash and case windows – are the defining window style of Glasgow’s housing stock. From the red sandstone tenements of the South Side to the Victorian villas of the West End and the Edwardian terraces of the Southside suburbs, the vertical sash window is the window that fits.
NuView supply and fit uPVC and aluminium vertical sliding sash windows across Glasgow, combining the traditional look of the original timber sash with the performance, security and zero maintenance of a modern installation.
If you have sash windows that are draughty, difficult to open, rotting, or simply looking tired, we can replace them with a modern equivalent that looks right on your property and performs significantly better in every way.
What is a vertical sliding sash window?
A vertical sliding sash window has two panes – called sashes – that slide vertically past each other within the frame. The upper sash slides down and the lower sash slides up, giving you ventilation at both top and bottom of the frame simultaneously. This is the classic sash and case configuration that has been used in Scottish domestic architecture for over 150 years.
Modern vertical sliders replicate this mechanism in uPVC or aluminium, with the addition of spring-loaded balances that make the windows smooth and easy to operate. Most modern versions also tilt inward for safe, easy cleaning from inside the property – a significant advantage for upper floor flats and tenements.
Why vertical sliders are ideal for Glasgow properties
Glasgow has one of the highest concentrations of period and traditional housing in the UK. The city’s tenement stock, built predominantly between 1870 and 1920, was designed with sash windows. Replacing them with casement windows – the modern standard – often looks wrong and can affect the character of the property and the street.
A vertical sliding sash replacement window maintains the correct proportions and appearance of the original while delivering:
- A-rated thermal performance, dramatically improving on single-glazed originals
- Multi-point locking for modern security standards
- Draught-free sealing throughout the frame
- Zero maintenance – no painting, no swelling, no rotting
- Acoustic performance significantly better than single glazing
- Heritage profiles that closely replicate the slim sightlines of original timber sash windows
For Glasgow tenement owners in particular, the choice of window matters to the whole close as much as to the individual flat. A well-matched sash replacement respects the building while solving the practical problems that come with ageing original windows.
uPVC or aluminium vertical sliders?
Both uPVC and aluminium are available in vertical slider configurations. The right choice depends on your property and priorities.
uPVC vertical sliders
The most popular choice for Glasgow tenements and traditional residential properties. Excellent thermal performance, a wide range of colour options including woodgrain finishes that replicate the look of painted timber, and a competitive price point. Heritage profile uPVC sash windows have particularly slim sight lines that work well on traditional properties. Typical lifespan 20 to 25 years.
Aluminium vertical sliders
The slimmest possible profiles, the closest replication of original slim-section timber sash windows, and a longer lifespan of 35 to 45 years. The powder-coated finish is highly durable and colour-stable. Aluminium vertical sliders are the preferred choice for listed buildings and conservation areas where planning conditions require a close match to the original. They carry a price premium over uPVC but are often the right investment for the right property.
Conservation areas and listed buildings in Glasgow
A significant proportion of Glasgow’s housing stock sits within conservation areas or is attached to listed buildings – particularly in the West End, Merchant City, and established residential suburbs. If your property is in a conservation area or is listed, replacing your windows may require planning permission or listed building consent, and the specification of replacement windows may be restricted.
NuView have experience working with Glasgow City Council planning requirements and can advise on what products are appropriate for your property and area. If you are unsure whether your property is affected, we can help you check before proceeding.
The general principle is that replacement windows in conservation areas should match the appearance of the originals in terms of material, profile, colour and opening configuration. Modern aluminium or heritage profile uPVC vertical sliders can satisfy these requirements in many cases – but always check with the planning authority first.
Georgian bars and period features
Many Glasgow sash windows feature Georgian bars – the narrow dividing strips that create a grid pattern across the glass. These can be replicated in modern vertical sliders using internal Georgian bars sandwiched between the panes of glass. This gives the correct appearance from outside without affecting the thermal performance of the sealed unit.
Decorative horns – the small ornamental projections at the bottom corners of the upper sash, characteristic of Victorian and Edwardian windows – are also available on modern vertical sliders and make a significant difference to how the window looks on a period property.
What to expect from a NuView installation
We supply and fit vertical sliding sash windows across the whole of Glasgow and the surrounding area, including properties in the South Side, West End, East End, and all the surrounding suburbs from Newton Mearns to Bishopbriggs.
Every installation starts with a free home survey. We’ll measure your existing windows accurately, advise on the right product for your property, and provide a clear written quote with no obligation to proceed. If you want to see the product before committing, our Glasgow showroom at 34 Houston Street has vertical sliding sash windows on display alongside our full range.
Our installations are carried out by our own employed team – not subcontractors – and every installation is FENSA certified and comes with a 10-year manufacturer’s guarantee.
Sash window prices in Glasgow
uPVC vertical sliding sash windows are typically priced between £700 and £1,200 per window fully fitted, depending on size, specification and access. Aluminium vertical sliders carry a premium and typically range from £900 to £1,500 per window fully fitted.
For a full property – a typical Glasgow tenement flat with four or five windows – a uPVC sash replacement installation typically costs between £3,500 and £6,000 fully fitted including all labour, materials, and FENSA certification.
Replacing multiple windows in one visit is more efficient than doing them in stages and usually results in a better overall price per window. We’ll give you a clear written quote before any work begins.
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Frequently asked questions
Are vertical sliding sash windows more expensive than casement windows?+
Yes, typically by around 20 to 40 percent. The more complex mechanism and the need for heritage profile options pushes the cost above standard casement windows. However for period and traditional properties the additional cost is usually justified by the improvement in appearance and the better match to the property’s character.
Can I replace just one sash window rather than all of them?+
Yes. We can replace individual windows. However if you’re replacing multiple windows it’s usually worth doing them all at once to ensure consistency of colour, profile, and hardware across the property, and to take advantage of the better per-window price that comes with a larger order.
Will my council allow sash window replacement in a conservation area?+
Many conservation areas in Glasgow allow like-for-like replacement of sash windows with modern equivalents in a matching profile and colour. But the rules vary by area and some require formal planning consent. Always check with Glasgow City Council planning before proceeding. We can help you understand what’s likely to be acceptable for your specific area.
How long does it take to fit a sash window?+
A single sash window typically takes between two and four hours to fit. A full property of four to five windows is usually completed in one day.
Do vertical sliding sash windows need maintenance?+
No – modern uPVC and aluminium vertical sliders require no painting and no seasonal adjustment. An occasional wipe down with a damp cloth and a light application of oil to the sliding mechanism once or twice a year is all that’s needed. This is one of the main advantages over original timber sash windows, which typically require repainting every three to five years and can swell, stick, and rot over time.