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Thermotech | Casement Windows

Casement and Tilt & Turn Windows

Casement Windows

Attractive, functional and easy to maintain, casement windows are suited to any property, whether heritage or more modern. There is a wide range of styles and innovative designs to choose from to fit your personal choice and the style of the rest of your home. With the surface coating system, you gain a wide range of colour choices and finishes are on offer, including White, White Oak, Rosewood and Oak. Whatever style or colour you choose, it won’t affect the durability or easy maintenance of casement windows.

Along with complying with the latest building regulations, Thermotech’s uPVC casement windows are made using the latest multi-functional Weatherseal designs, and incorporate secure multi-lock systems. They are also easy to fit with double glazing, furthering energy efficiency and saving on heating expenses.

Tilt & Turn Windows

Similar to the casement windows that offer quality and style, Thermotech’s Tilt & Turn uPVC windows are the perfect choice for various properties and priorities. They can be matched to your property in terms of style, are easy to clean, perfect for airing rooms in more damp-prone areas, more secure for families or high-rise properties, and are longer lasting than most other window options.

Wondering how they work? Simply tilt the handle once and the top of the window will open allowing ventilation when needed, turn the handle around further and the window opens inwards on its side hinges meaning you can clean the outside of the window very easily whilst standing inside your home. No more need for you to pay the window cleaner or for you to risk climbing a ladder to clean these windows yourself. If functionality isn’t enough, our Tilt & Turn windows are available in the same style options as our casement windows, including various colours and finishes.


"From our first introduction to Thermotech through to the completion of the conservatory, our expectations were exceeded. From the foundation to installation the workmen were friendly, clean, polite and worked to a very high standard. My wife and I would recommend your company with confidence Thank you"

Mr and Mrs Evans, Rogerstone. conservatory installation

"The workmen were extremely conscientious, very clean and tidy when working. Very impressed with the quality of the products also. Our new front door exceeds our initial expectations. We would definitely use the company in the future and would recommend you to friends and family."

Mr and Mrs Body, Chepstow. New front door and window

"The whole process was excellent. The construction was very solid and well built with quality materials, especially the roof section and insulation which was magnificent. The workforce were also excellent especially your fitter with his superb skills. I can really recommend your services to anyone and would be happy to sing you and your companies praises"

Mr and Mrs Chapman, Magor. Solid roof sunroom

"Very pleased with the service provided by Thermotech. All workmen were friendly and Karl ensured their work was up to scratch throughout the process. Nothing negative to say- could not criticise and would definitely recommend and also use Thermotech again. Fantastic Job, great value for money and easy 10 out of 10 for overall experience."

Mr and Mrs Haddock, Blackwood Gwent. Conservatory installation

"We are delighted with our new conservatory. Karl managed the project and always responded quickly to any communications. The quality of the conservatory is excellent. Thank you Thermotech"

Mr and Mrs Morris, Caerwent Monmouthshire. Conservatory

"We are very happy with the excellent work involved in building our conservatory. Everything has been done to or satisfaction, quickly and efficiently. A job well done and we would have no hesitation in recommending the company in future."

Mr and Mrs Mitchel, Magor. Conservatory installation

"My wife and I would like to congratulate and thank you for erecting our conservatory to a very high standard indeed. Al workmen involved in the build were very polite, on time and worked extremely hard. Each and every member knew what was required of them to complete a first class conservatory. We are very pleased with the end result and would certainly recommend your company to others."

Mr and Mrs Edwards, Llangstone Newport, Conservatory installation

"Karl was very helpful and approachable throughout. All workmen involved in the installation were friendly and professional during the installation. Good after sales service when needed. Overall great company and would not hesitate to recommend or to use again. Already had many enjoyable and relaxing hours in the conservatory and look forward to many more."

Mr and Mrs Whittington, Shirenewton. Conservatory installation

"From the 1st telephone call asking for a quote to the fitting was like clockwork. Once order was excepted it was installed within 3 weeks. 1st class product, fitted by first class fitter by a first class company. Thanks."

Mr Wright, Chepstow

"Having seen the product at your showsite we knew what we wanted and the product fitted the bill in both quality and appearance. The installation of the door was carried out in an excellent manor, the fitters were extremely good, friendly and displayed excellent attention to detail. In conclusion, excellent product fitted by excellent staff"

Mr and Mrs Cramp, Tuthil Chepstow. Composite front door

Become our next satisfied customer

  • Expert Fitting Teams
  • 100% Satisfaction Record
  • Family Run Business
  • A Rated Windows as Standard
  • 10 Year Building Guarantee
  • Great Quality Products

Serving South Wales & the West

Based in Monmouthsire, we have been providing quality windows, doors, conservatories, roofs and building work all across South Wales and the West for over a decade. Come and visualise your home improvements by visiting our showroom in Chepstow.