You’ll find uPVC windows on pretty much any street in Bristol, and they are the most popular glazing material across the entirety of the UK for very good reason.
Affordable, low maintenance and built to last, they boomed in the 1980s and haven’t slowed down since. uPVC itself is a synthetic material which is cost-effective because it can be manufactured in bulk and at pace, unlike timber, for instance.
They’re correctly seen as a more practical pick than their wooden counterparts, as not only are they incredibly thermally efficient, but they are strong, durable and very low maintenance.
Here at DM Windows, we’ve been fitting uPVC windows Bristol homeowners can rely on for decades, from elegant sliding sash windows in Clifton townhouses to crisp casement windows in Bedminster terraces, and flush sash installations in Long Ashton’s characterful cottages. When it comes to cost, as per Checkatrade, the average uPVC window typically comes in at anywhere between £500 and £1,800 for supply and installation, depending on style, with a typical lifespan of around 20 to 35 years when professionally installed.
In this guide, we’ll walk you through everything you need to know about uPVC: what it is, what it costs, the benefits and the styles available for your Bristol home.

What is a uPVC window?
uPVC stands for unplasticised polyvinyl chloride, a rigid, hard wearing form of plastic that has been used in construction since the 1950s. Unlike standard PVC, uPVC contains no added plasticisers, meaning it doesn’t warp, soften or degrade in sunlight as easily.
It became a popular choice for windows in the UK during the 1980s, when homeowners began swapping out their old timber windows for something that didn’t need repainting every few years. Today, uPVC is used widely in window frames, drainpipes, guttering, cladding and even medical equipment thanks to its strength and resistance to corrosion.
Modern uPVC frames are manufactured by extruding the material into multi chambered profiles. Those internal chambers are key, they trap pockets of air which dramatically improve thermal performance (more on that shortly) to promise you lower energy bills.

What are the benefits of uPVC windows?
There’s a reason uPVC has remained the go-to choice for British homeowners for over 40 years. Here’s what makes it such a smart investment:
Excellent thermal efficiency
Thermal efficiency simply means how well a window prevents heat transfer (you retain warmth in the winter and prevent it entering in the summer).
Modern uPVC windows feature multi chambered frames combined with double glazing or triple glazing to reduce this heat transfer, meaning lower energy bills and a more comfortable home year round.
Impressive durability
uPVC doesn’t rot, rust or warp. It shrugs off UV rays, heavy rain and frost, which is exactly what you want from a window in the South West, where we are exposed to coastal downpours, but also a higher average temperature than the rest of the nation.
A long lifespan
A quality uPVC window installed by trade professionals should last 20 to 35 years, with many lasting even longer with minimal upkeep.
Low maintenance
Forget sanding and repainting. A quick wipe down with warm soapy water is all uPVC frames need to keep looking fresh.
A wide range of colours and styles
From classic white to anthracite grey, chartwell green and woodgrain finishes like Irish oak and rosewood, there’s a finish to suit every style of home, traditional or modern.
Strong security
Multi point locking systems come as standard, giving you peace of mind alongside performance.

How much do uPVC windows cost?
Pricing varies depending on style, size, glazing and finish. The figures below are sourced from Checkatrade and offer a useful guide, though for an accurate, no obligation quote tailored to your Bristol home, we’d always recommend getting in touch with our friendly team.
These quotes cover supply and installation.
| Window style | Estimated price range (per window) |
| uPVC casement windows | £500 – £900 |
| Flush sash windows | £600 – £1,100 |
| Tilt and turn windows | £650 – £1,000 |
| Sliding sash windows | £800 – £1,400 |
| Bay and bow windows | £1,400 – £3,500+ |
| Residence Collection windows | £850 – £1,800 |
Bear in mind that dual colour frames or woodgrain foils can add 10-20% to the cost, and upgrading to triple glazing or acoustic glass can add another 15-30%.
How long do uPVC windows actually last?
Most modern uPVC windows last between 20 and 35 years when professionally installed and properly looked after. High end systems like the Residence Collection can last even longer thanks to their reinforced multi chambered profiles, premium hardware and superior weather sealing.
What uPVC window styles are available?
We offer a brilliant range of styles to suit every kind of property, from period terraces in Redland to new builds in Bradley Stoke.
Casement windows
The most recognisable style in the UK, uPVC casement windows are side or top hung and open on hinges. You can choose whether they open in or out. They’re versatile, affordable and suit almost any home.
- Excellent ventilation
- Available in ovolo or bevelled profiles
- Wide range of colours and finishes
- Multi point locking as standard

Flush sash windows
Flush sash windows sit perfectly level with the outer frame when closed, giving that clean, timber inspired look without the maintenance.
- Mimics traditional timber joinery
- Great for both period and modern homes
- Often approved for conservation areas
- Available with double or triple glazing
Sliding sash windows
Our sliding sash windows (or vertical sliders) replicate the look of Georgian and Victorian timber windows, with two vertically gliding panes.
- Authentic heritage appearance
- Optional sash horns and Georgian bars
- Tilt in functionality for easy cleaning
- PAS 24 security upgrades available
Bay and bow windows
Bay and bow windows project outwards from the wall, bay windows use angles, while bow windows form a gentle curve. A perfect addition for adding light and space.
- Creates a feature focal point
- Increases natural light
- Available in matching Spectus colours
- Robust, weather tight design
Tilt and turn windows
Tilt and turn windows tilt inwards from the top for ventilation or open fully inwards for cleaning, the perfect solution for flats and upper storeys.
- Easy to clean from inside
- Secure ventilation mode
- Modern aesthetic
- U values as low as 0.8 W/m²K with triple glazing
Who are DM Windows?
We’re a Bristol based installer of premium uPVC and aluminium windows, doors and garden structures, serving homeowners across the city and the wider South West. With years of experience under our belt, we’re proud to offer:
- A full product range including bifold doors, composite doors, French doors, conservatories, orangeries and roof lanterns
- CERTASS certified installations meeting the latest Building Regulations
- SafeContractor approved status
- Sponsorship of both Bristol Bears and Bristol City
- Flexible finance options to spread the cost
You’re more than welcome to pop into our brand new Bristol showroom, 11-16 Cater Road, Bishopsworth, Bristol, BS13 7TW. Here you can get a really good understanding of our range, though it is appointment only.
Alternatively, you can give our dedicated team a call on 0117 313 6884, email sales@dmwindowsbristol.com or fill out our contact form for a free no obligation quote. We’ll be with you every step of the way.
























