What is uPVC?

uPVC, is a well-established material in the home improvement industry – but how many of us actually know what it is?  The abbreviation stands for UnPlasticised Polyvinyl Chloride, a strong and durable form of plastic which is a low-maintenance building material and has endless amounts of uses. uPVC first broke onto the scene in the 1980’s but the material has continued to evolve ever since. At its core the main elements of the material are made up of salt and oil, and as a rigid, strong and durable compound, it is perfect for construction purposes yet remains very light. It is most commonly used for a range of doors, window frames and sills when installing double and triple glazing, or to replace older single glazed windows when it comes to home improvements.

Why is uPVC a good material for window frames?

The material is proven to offer an all-round fantastic solution to cover a vast array of required qualities that your windows or doors may need to have. It is long lasting and requires very little maintenance, it is recognised for its thermal efficiency and it is most importantly a low cost yet great value alternative to other materials on the market.

The naturally warm material and multi-chambered frames of uPVC are great for insulation, helping to control your bills during the winter months. uPVC can last up to 20 years in perfect condition, making the investment well worth it. At Glevum we provide a 10-year (insurance backed) guarantee with all our products, including our uPVC doors and windows.

What are the benefits of using uPVC for window frames?

Low cost

uPVC is a cheaper alternative to hardwood timber and aluminium, and despite costs varying dependent on the product and details chosen, it is typically a much more affordable option to go for when choosing your new windows or doors. The cheaper alternative can still be paired with any of our glazed options such as double and tripled glazed, all the way through to our patterned and stained glass units.

Low maintenance

One of the main advantages to uPVC windows or doors is the lack of maintenance that is required to look after them. It is this factor alone that was responsible for many people to replace their old wooden windows in the 1980’s and 1990’s (many of these are now coming to the point where people are choosing to replace them).

The high-quality uPVC material will never need painting and will only require a wipe down on and around the frame when you feel like it. Unlike timber products, you will not see any signs of weather damage, rot, rust or even mould as they are extremely durable and weather resistant. As needed with timber or aluminium frames, it is not necessary to coat the uPVC with special substances to ward off bacterial growth or prevent chemical reactions from occurring.

Great performance

All uPVC windows and doors must be energy rated to confirm with Building Regulations which guarantees thermal efficiency. As the windows are made of uPVC, they have a very low thermal conductivity which is essential to stop heat escaping as easily as it does with other window materials such as aluminium. What’s even better is the material choice combined with modern glazing options can provide sound insulation, and research even suggests that the combination can reduce the outside noise by as much as 75%!


At Glevum our uPVC is available in a wide range of attractive colours and woodgrain timber effect finishes to maintain the authentic look and feel of traditional timber window frames at a fraction of the cost. The colours range from White or Antique Teak all the way through to Chartwell Green and Black. Glevum offer a range of styles and finishes to account for all different tastes and property styles to compliment homes inside and out, including the choice of glazing options. The material also retains its shape within our living climates but if placed in a very high temperature, it can then be recycled to maintain low environmental impact!

Here at Glevum we are a proud, reliable and professional installer of uPVC products alongside multiple glazed options. Browse our website, give us a call or pop into our Showroom and Conservatory Village – to find out more about what we offer.

Request your free home visit Get an instant quote

Satisfied Customers

"Excellent very good product fitters were very professional courteous and carried out the job to a high standard and made every effort to cover flooring and furniture keeping any dust to a minimum my wife and self are very happy with every aspect of work carried out we would be more than happy to use Glevum again."

A Lee (Gloucester) - December'20

"We have had Glevum windows before and yet again we had excellent service at a good price. We certainly would use them again for any other window replacement."

W Evans (Chepstow) - December'20

"Professional, the two fitters this week were very good."

M Turner (Lydney) - November 2020

"A very professional job from start to finish, even with difficulty of the size to the front door, not being the standard fitting. A total professional team throughout."

R Grey (Cheltenham) - October 2020

"As in the past - excellent."

M Clarke (Newnham On Severn) - October 2020

"First class service and should we require further windows/doors we will use you in the future."

B Turner (Gloucester) - September 2020

"Excellent service, their reputation is well founded."

J Harkus (Gloucester) - September 2020

"A very professional team from the designer to the fitters. All had a good knowledge of their products and provided an excellent service. The fitters were skilled and efficient and the quality of the windows and doors and the workmanship was very good."

R Greenwood (Drybrook) - August 2020

"Fitters arrived at the time notified to us. Started work immediately removed old frame and door and refitted new door within two hours very clean and left area very clean and tidy. EXCELLENT JOB WOULD RECOMMEND GLEVUM TO ANYONE."

B Carter (Swindon) - March 2020

"All staff that we encountered were courteous, helpful and approachable. Glevum made the whole experience very pleasant. Absolutely love the product especially our new front door."

M Tattersall (Gloucester) - March 2020

"Very good clean and tidy, would use again."

G England (Cheltenham) - March 2020

"Excellent. A very trustworthy company."

L Morss (Stroud) - March 2020

"From start to finish, both fitters were polite and courteous. All the work was completed to a very high standard. And my wife and I both agree that the house has been totally transformed. "

A Jones (Cinderford) - February 2020

"We have used them before to double glaze the whole of the house so we knew that they were a first rate company. They did not disappoint so we will use them again in the future. "

P Cousins (Chepstow) - February 2020

"From the first visit to the fitting, everybody was helpful and the fitters were very thorough and clean. We were very plesaed with all the work done. Thank you. "

Wiliams (Bristol) - February 2020

"Very courteous firm, reliable, good products. "

D Frusher (Stroud) - January 2020

"Professional, friendly, good range of products, knowledgeable. "

C Goodliffe (Nailsworth) - January 2020

"Very happy from start to finish. I would have no qualms in referring Glevum to family or friends. "

Leece (Swindon) - January 2020

0800 33 22 55 9:00am - 5:00pm Mon-Fri, Currently Closed on Sat