Attractive & efficient uPVC windows

Thermaglaze uPVC windows are manufactured to offer a number of benefits, ensuring your home will be secure, warm, draught free and require zero cosmetic maintenance.

Our A-rated double-glazed uPVC windows have high thermal insulation properties, preventing cold and air and draughts entering your home and heat from escaping. Our windows are also acoustically insulated and designed to minimise problems with noise outside of the home.

The potential for uPVC window styles should not be overlooked, modern systems allow uPVC to be used in the construction of authentic traditional looking flush casements to suit town houses and country cottages alike. Our exclusive Silhouette uPVC slimline systems are now also available as a cost-effective alternative to aluminium in a wide selection of colours which can be tailored to suit modern or traditional projects.

Below you will find a sample of the uPVC window options available from Thermaglaze, being such a big product category there is so much more to discover in our Warminster showroom so why not call in for a delicious cup of coffee and browse the choices you have for your home improvement project?

uPVC Windows

Need a little help choosing the right uPVC windows?

Beautiful environmentally friendly, thermally and acoustically efficient uPVC glazing solutions from Thermaglaze

uPVC Window
Standard and UltraSlim uPVC windows

Exceptional performance combined with lasting beauty.

Imagine your home with windows that are as long-lasting as they are beautiful – and as elegant as they are energy efficient.

By choosing to replace your windows with our class leading uPVC Casement Windows you’ll make your favourite place quieter, safer and much warmer.

But that’s just the beginning, with our wide choice of colours, finishes and fittings, you will create a unique, long-lasting, low-maintenance look for your home.


Exclusive sleek and stylish Silhouette Slimline Windows

Our Exclusive Silhouette Slimline uPVC windows have been developed to allow for a much greater glass area due to it’s ultra-slim sightlines.

This sleek window style is ideal for both modern and traditional properties, and depending on the style and size, as much as 12% more light can be gained through our Silhouette Slimline Windows compared to other typical uPVC systems.

Flush Casement

A clever blend of old and new.

Flush Casement Windows really are the king of the all-rounders. Whether you are looking for a traditional look for your country cottage, or a modern and affordable contemporary feel to your property, our Flush Casement systems offer everything you need.

A combination of design, innovation and technological advancement coupled with a wide selection of finishes and fittings fuses classic aesthetics with a twist of modern materials and technologies.

Sash Windows

Bringing elegance and style to your home

From a terraced house to a stately home, our uPVC Vertical Sliding Sash Windows ensure that your home retains it’s character and charm.

Our heritage Sliding Sash windows are perfect for conservation or traditional projects, a classic look with modern technological advantages. Choose from the classic white uPVC, or a range of colour and finish options, contact us to discover more.

We are old customers and have recommended you to family
Mr A.A – Windows & Conservatory Roof, Frome
Thermaglaze installed our windows and proved to be a first class organisation
D – Conservatory, Warminster, Wiltshire
first class service is given
J.W – Window & Doors, Warminster
You were able to offer us a slimline frame
Mr & Mrs D.S – Slimline uPVC Window, Wincanton
Best advice given I received at first visit.
M.B – Sun Room Extension with Tiled WARMroof System, Trowbridge