Contemporary Aluminium Windows

Eye-catching aesthetics with unmatched performance and strength.


Energy-efficient and Durable

Versatile styling and bespoke design

Known for its strength and durability, aluminium is highly versatile and is ideal for bespoke design requirements.

Combined with a strong aesthetic and A+ grade energy rating, it’s easy to see why it’s the favoured choice of architects and developers.

The versatility of aluminium means that it is able to lend itself to virtually any type of styling you could wish for.

Putty Line, Stepped Steel Replacements, Slimline Cottage, or clean and contemporary, the architectural beauty of aluminium suits both traditional and modern tastes.

There is a truly inspirational choice of colours textures and finishes available for your aluminium windows, there are almost no limits to your options and choices.

Our extensive range includes over 200 single or dual RAL colours – finish options range from stunning contemporary shades of textured bronze and silver through to sensational, vibrant reds, blues and traditional palettes designed specifically to suit conservation projects.

Perfect styling accessories for your aluminium windows.

Our range of fixtures and fittings provides the inspiration you need when choosing those vital finishing touches for your new aluminium windows from Thermaglaze.

Whether you are seeking a modern, contemporary touch, or prefer a more traditional look, we have a wide range of style and colour options to choose from.

Thermally Efficient A Rated Double and Triple Glazing.

All Thermaglaze window installations come fully A Rated as standard, offering incredible thermal efficiency and increased acoustic insulation.

Utilising the very latest insulation materials and Thermal Break technology you be assured of creating a draught free and energy efficient environment in your home.


Introducing the Origin window

Beautiful, elegant and simplistic, the Origin Slimline Window is designed for spaces where maximising glass and light is essential.

Modernising the design of traditional 19th Century timber windows, the Origin Premium Window is a highly durable and blissfully functional solution that’s perfect for the 21st Century.

The difference between OW-70 and OW-80

The main difference between OW-70 and OW-80 is the way that they look.

OW-70 offers the slimmest sightlines at just 65mm wide, ideal for those looking to maximise on natural light and views. OW-80 may not offer sightlines as slim as OW-70, however, it offers an internal flush casement, which OW-70 cannot provide.

Both OW-70 and OW-80 are manufactured using premium grade aluminium, are durable and low maintenance, and come with an industry-leading guarantee of up to 20 years.


The Thermaglaze process

We pride ourselves on offering the very best experience for our customers throughout every stage of the process.
Known fondly as the “Thermaglaze experience".

From quote to installation, we make it easy for you!

"Have used Thermaglaze for many years. Always professional, helpful and very courteous. Delighted with completed work."

Mr J Watson







Case Study

Alma Fields

Installation in Castle Cary in the county of Somerset

This was a modern new build project with a glazed shaped frame to the rear to allow light to flood into the kitchen area. Slimline Smarts Alitherm 300 windows were used along with the Smarts Visofold 1000 aluminium multifolding doors. To keep continuity the French doors were manufactured in matching Visofold Profiles which are much slimmer than standard door profiles. The structural supports to the gable section were then cladded in matching aluminium pressings. All the aluminium products were powder coated in a Sensations Platinum Grey Finish.
A Solidor composite Front Door was used as a focal point to the from elevation finished in Anthracite Grey to match the Fascia and Soffits.

Products used:
SMART Aluminium Windows | SMART Aluminium Multi-folding Doors | SMART Aluminium French Doors | SMART Sensations Finishes | SOLIDORComposite Doors | EUROCELLUPVc Fascia & Soffits

Customer: Jenkins Developments

Case Study

Berkley Heights

Installation in the lovelyboutique town of Frome, Somerset

This project was dominated by the offset gable glazed façade to the rear elevation. A contemporary design that made the most of simple slim Smarts Alitherm 300 windows designed to maximise all glass areas and provide ample light to the internal aspects. The frontage was further enhanced with a Smarts Designer Doors all powder coated in a Sensations Antique Frey finish. The Rear Kitchen Diner is flooded with light from the two storey glazing, the bottom of which is constructed from a Triple Track 6 Pane Smarts Visoglide Plus Sliding Patio Door, with super slim meeting stiles this provides 6 large glazed areas when closed and with the 4 sliding sections creates a fantastic clear opening when all the doors are fully opened. Careful attention was paid to lining everything through with the above fixed panes and all the cladding were matched to produce a single gable infill from outside.

Products used:
SMART Aluminium Windows | SMART Aluminium Sliding Doors | SMART Aluminium Residential Doors | SMART Aluminium Designer Front Doors | SMART Sensations Finishes

Customer: Jenkins Developments

Case Study

Bridge cottage

Installation in the Wiltshire village of Maiden Bradley

This was a new annex built adjacent to a lovely old cottage. Anthracite Grey (RAL 7016) was the finish chosen to compliment the timber cladding, natural stone and slate roof. Simple single opening windows were specified with minimal sightlines this suited the Alitherm 300 range perfectly with a flat sash and square bead keeping things very simple. The doors were supplied in the slimline Visofold 1000 system giving maximum glass and therefore maximum light. Internally the doors and windows achieve a stark contrast by being finished the same as the outside in anthracite grey.

Products used:
SMART Aluminium Windows | SMART Aluminium French Doors

Case Study

Deptford Farm

Installation inWylye, a Wiltshire village

This was a project restricted by certain planning criteria. Firstly, the colour was critical, so a bespoke British Standard Colour was chosen (BS 3058 12B21) . The window system chosen was a Crital lookalike Heritage Putty line, designed to look authentic and with super slim sightlines. The doors were a challenge as they were wider and taller than normal, and the customer still wanted the smallest possible sections so the Visofold 1000 system was specified with the largest door being 1200mm wide and 2200 high. Small details matter and the external arched heads were finished with trims that were powder coated to match the aluminium frames

Products used:
SMART Aluminium Windows | SMART Aluminium Residential Doors | Bespoke British Standard Finish


What our customers say

Don’t just take our word for it. Hear what our customers have to say!

You were able to offer us a slimline frame which matched the original windows and look more stylish than the thicker uPVC frames.

Mr & Mrs D.S

Slimline uPVC Window, Wincanton

No charge for sales on-site visit (others need commitment before site visit).


Bi Fold Door, Slimline Windows, Taunton

The Thermaglaze Family

Like the look of our service and products but not based in our catchment area? Take a look at our 2 sister companies in the surrounding area.

Clearglaze Windows

Based in Bath, we cover the following areas: Bradford on Avon, Radstock, Keynsham, Chippenham, Saltford and Midsomer Norton.