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Business Details
22 Years
experience
Expert Windows, Doors & Conservatories in Chepstow
Established in 2004, Thermotech UPVC Products is a family-run home improvement business based in Chepstow, Monmouthshire. We specialise in supplying and installing high-quality windows, doors, conservatories, and building products across South Wales and the West of England. Our dedicated team of experienced tradesmen prioritises customer satisfaction through 100% quality guarantees, A-rated energy-efficient windows, and a 10-year guarantee on all window and door frames.

As members of the Consumer Protection Association, FENSA Registered, and Secured by Design, we combine industry-leading accreditations with a personal approach to deliver reliable, secure, and energy-efficient home improvements. Our commitment to excellence is reflected in our 72-hour service call turnaround and insurance-backed guarantees, ensuring peace of mind for every client.
Services
Windows Doors Conservatories Extensions Orangeries Garden Offices Conservatory Roofing
Details
  • Year established: 2004
Highlights and features
  • Family-run business with 20 years' local expertise in home improvements
  • 10-year guarantee on all window and door frames as standard
  • A-rated energy-efficient windows to reduce heating bills
  • Expert fitting teams with insurance-backed guarantees for all installations
  • Secured by Design accreditation for enhanced home security solutions
Associations and certifications
  • Consumer Protection Association
  • FENSA
  • Secured by Design
What people say
Professional service Excellent work Friendly and knowledgeable Highly recommend Immaculate finish
Services
Windows
Our A-rated uPVC windows provide superior energy efficiency and security. Available in casement, sash, tilt & turn, and flush sash designs, they feature multi-point locks and come in 26 colour options. The innovative Weatherseal system ensures draught-proof performance while reducing noise pollution. Each installation includes a 10-year guarantee with insurance-backed protection.
Doors
We supply and install composite, bi-fold, patio, and French doors with enhanced security features. Our doors incorporate anti-snap cylinders and PAS 24-approved locking systems. Available in custom colours and finishes, they improve thermal efficiency while maintaining aesthetic appeal for both modern and traditional properties.
Conservatories
We construct Edwardian, Victorian, lean-to, and gable-end conservatories using high-quality materials. Our installations include lightweight tiled roof options and polycarbonate-to-glass upgrades. Each project receives a dedicated project manager and expert fitting team to ensure watertight, energy-efficient results that enhance living space.
Orangeries
Our orangeries combine traditional architectural elements with modern energy-efficient materials. Featuring full-height brickwork and glazed roofs, they create versatile living spaces. We offer custom designs to complement existing property styles while maintaining thermal performance and structural integrity.
Garden Offices
We design and install insulated garden offices with uPVC windows and secure doors. These spaces feature electrical installations, heating options, and connectivity solutions tailored for remote working. The structures use durable materials with weatherproof guarantees for year-round usability.
People
Karl
Project Manager
Karl manages installations and provides expert advice, ensuring timely completion and client satisfaction. He coordinates teams and maintains communication throughout projects.
Steve
Lead Installer
Steve leads fitting teams with exceptional attention to detail and precision in window and door installations. Clients praise his professionalism and workmanship.
Andy
Installer
Andy specialises in conservatory roof replacements and structural installations, delivering efficient and tidy workmanship across all projects.
Carl
Customer Liaison
Carl ensures smooth order processing and client communication, providing knowledgeable support from quotation to completion.
Shannon
Door Specialist
Shannon focuses on door installations, combining technical expertise with customer service excellence to deliver secure, stylish entrance solutions.
Questions
What areas do you serve?
We operate across South Wales and the West of England, including Monmouthshire, Newport, and Chepstow.
Do you offer guarantees on your work?
Yes, we provide a 10-year guarantee on all window and door frames with insurance-backed protection.
Are your products energy efficient?
All windows are A-rated for energy efficiency, helping reduce heat loss and lower energy bills.
How quickly can you complete installations?
We aim for a 72-hour turnaround for service calls and typically complete installations within weeks of ordering.
Are your windows secure?
Our products feature PAS 24-approved multi-point locks and Secured by Design accreditation for maximum security.
Can you help with conservatory upgrades?
Yes, we offer lightweight tiled roof solutions and glass replacements for existing conservatories.