Door Supplier & Installer in Newport & General Monmouthshire areas - Front Doors, Bi-fold Doors, Composite Doors All Available.
Don’t be a door mat – choose Thermotech!
If you want to pull up on your driveway and be proud of the door at the front of your property, then Thermotech has many quality replacement doors for you to choose from. Whatever your priority (or colour preference) we can help. We offer various styles and designs including French & patio, bifold, new wave and composite entrance options. Each of these types of doors boasts different benefits varying from creating more space, minimalist design and better security for your property.
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Innovation and quality from industry experts
We are lucky enough to provide the highest quality of doors on the market, with all of our range including, slide and swing bifold doors, composite doors to your typical uPVC entrance doors all being engineered with detail and care in mind. Combining these innovative designs with our industry knowledge, hassle free installations and friendly family-run ethos, Thermotech are the best option for your replacement doors. Not only that but we are a local company covering the Chepstow, Newport and Monmouthshire areas with our full range of composite, patio and French doors.
By providing replacement doors with such close attention to detail, all of Thermotech’s options meet building and standard regulations whilst also being stylistically pleasing. Part of their functional acknowledgment stems from their thermal benefits with all doors being fantastically rated for energy efficiency.
All replacement doors are also guaranteed to include Yale security systems, helping them to pass PAS 24 security standards with flying colours and for Thermotech to be an accredited member of the Secured by Design police initiative.
They pass the test!
Are you looking for high quality patio and French doors, composite doors, Bi-fold and new wave doors in the greater Monmouthshire area? We cover a range of areas in the locality including Newport. Along with style, thermal efficiency and security, Thermotech’s replaceement doors undergo vigorous testing. This includes mimicking the life cycle of an average door, including opening and closing it over 50,000 times and putting them in a pressurised chamber to simulate winds of over 100mph.
The British Standards Institution rewarded all of our doors with a BS6375, otherwise known as one of their highest accolades and a definite seal of their approval. Tests such as theirs prove that Thermotech’s products will last for years to come and survive even the most extreme weather conditions (fingers crossed we won’t be hit by 100mph winds any time soon – although we do offer tiled roof replacements too!).
So whether you prioritise ventilation, thermal efficiency, usability or look, Thermotech have the products that will most suit you and your home. Quality products combined with our industry knowledge, hassle free installations and friendly family-run ethos make Thermotech the best option when trying to find the best replacement doors for you or your home.

Expert Fitting
Teams

Satisfaction
Record

Family Run
Business

A Rated Windows
as Standard

10 Year Guarantee of
All Window and Door Frames

Great Quality
Products
Latest reviews
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Amazing quality windows and doors with first class service, such a family friendly business who take care of their customers. Highly recommend.
Chrisley Finch
February 2, 2020Wonderful company from start to finish! I purchased a new door a few months ago, the quality and the fitting is outstanding. Having an old stone wall surrounding the fitting was not an easy job, however the result is to perfection. Being a family run business they take customer service to heart. I can not fault this company and would highly recommend it.
laura symons
February 2, 2020Professional
Good communication
Price competitiveeric klak
January 28, 2022 -
This small family company was excellent from start to finish. Then the after sales service was so efficient, Karl was at the end of the phone if the need arose. I would definitely recommend this company and would use them again.
Glynis Jervis
February 2, 2020Highly recommended- family run business who take such a pride in the work they do
Maxine Dolloway
February 2, 2020
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Professional
Good communication
Price competitiveeric klak
January 28, 2022 -
Highly recommended- family run business who take such a pride in the work they do
Maxine Dolloway
February 2, 2020 -
Wonderful company from start to finish! I purchased a new door a few months ago, the quality and the fitting is outstanding. Having an old stone wall surrounding the fitting was not an easy job, however the result is to perfection. Being a family run business they take customer service to heart. I can not fault this company and would highly recommend it.
laura symons
February 2, 2020 -
Amazing quality windows and doors with first class service, such a family friendly business who take care of their customers. Highly recommend.
Chrisley Finch
February 2, 2020 -
This small family company was excellent from start to finish. Then the after sales service was so efficient, Karl was at the end of the phone if the need arose. I would definitely recommend this company and would use them again.
Glynis Jervis
February 2, 2020
Contact us
It’s easy to contact us via phone, email or this online form.
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