uPVC Windows

We supply and fit quality, stylish uPVC windows from some of the leading manufacturers.

Rehau and Eurocell complete with the latest energy-saving double or triple glazing units, so our windows and doors offer high levels of energy efficiency.

They offer classic styling that complements both traditional and contemporary properties, that look great and represent excellent value for money.

They are available in a wide range of glazing options and colour choices giving your installation that perfect finish that complements both traditional and contemporary properties.

uPVC casement windows are one of the most popular window styles in the UK. Their simplicity, ease of operation and wide range of style options mean that they are suitable for all types of properties.

uPVC windows are a great low maintenance option for the Cornish climate.
If you would like further information about any aspect of our range of window and door products and to arrange a free, no-obligation quote for your requirements, please contact us using the number above or using the contact form.

Full uPVC conservatory including blue self cleaning glass in Redruth

Some of our uPVC window installations….

Please click on the thumbnail to see a larger image along with a caption describing the work

A stunning barn conversion including flush casement uPVC windows achieving a traditional timber window appearance

Rosewood uPVC window including astragal bar design

Customer Testimonials

G.T Glassmasters

4.7

Based on 31 reviews

review us on

Steven Smith

17:55 08 Aug 25

Happy to recommend this excellent local company. Great service right from the start, working with us to amend things as we went along to ensure we got exactly what we wanted in an old house where no two windows or doors are the same size. Everyone we dealt with was friendly and helpful, from Emma in the office to the MD Graham who came to measure up. The fitting itself by Dan and Lewis was very good, they worked methodically around some dodgy weather and did so with minimal disruption to us, leaving everything clean and tidy at the end of each day. We are very pleased with the results and feel like we got very good value for money.

Ms. ASMR

16:51 03 Apr 25

Very friendly when Graham came to have a look at the work that I wanted to be done but then I received no follow up phone call or email quote. I have chased this up several times in the last 3 months and have been told that they would be in touch. Sadly noone ever bothered to get back to me. So disaapointing as I was trying to support a small local business. One of my friends had the same problem!

Marja van Leeuwen

07:09 29 Jun 24

A local, friendly, and professional service. The windows and doors were made, delivered, and they replaced the old within an excellent time frame. They were hard working, cheerful, good teamwork, and cleaned up after themselves. Thank you very much, GT Glassmaster team.

Cara Nankivell

08:00 10 Apr 24

Be careful if you order by email and then cancel that order via phone! The company claimed to not receive my voicemail regarding cancellation and charged me for items I never received. When I refused to pay as it was cancelled and not collected either they then got debt collectors on me that forced me to pay or threatened to add 8% charge every day I refused and then take me to court !
I had no choice to pay as I couldn’t “prove” I phoned them and cancelled the order the following day.
Lesson learned on my part, don’t trust humanity and get everything 100% in writing!
I’m now out of pocket, no product and in debt for no reason!
I would have happily paid a deposit when ordering and taken that loss on cancellation but none was asked for.

Be cautious and get everything in writing!

Richard Waterson

19:38 13 Mar 24

This is one of those businesses that you wish you had found years ago. From enquiry to placing order, execution and delivery, my experience could not have been better. And their price was extremely competitive, with speedy service and friendly approach.
Thank you all. It was a real pleasure to deal with you.

Lauren Porter

12:50 03 Mar 22

Great price that won’t be beaten anywhere else, amazing service and friendly staff. Highly recommend.

Charlotte Johnson

12:54 15 Mar 21

Super friendly and helpful team, and very reasonably priced stock. We picked up some greenhouse glass following the storm - so glad to have this local business. We’ll be back for more glass/ mirror bits and pieces!

Tom Thorn

15:11 26 Feb 21

Excellent service and a good price. I had some single pane glass break that needed replacement cutting, Graham was able to arrange a replacement pane the same day. Would highly recommend!

Chris Elias

14:33 29 Jun 19

Two really friendly gentlemen came and were very cheerful despite being up a ladder replacing our bedroom window panes during the horrendous winds the other day.
Excellent price and excellent service
Chris Elias

Lesley Jay

11:12 05 Feb 14

Graham has just been to repair 6 panes on our old greenhouse and he was brilliant. He did his upmost to help pull the old greenhouse into shape including moving other panes back into place that had slipped, fixing the door that was flapping around and delivered excellent customer service and was very friendly. I would definitely recommend him.