Business Details
46 Years
experience
Trusted Double Glazing Solutions in Kent
Thermaframe Windows is a trusted specialist in double glazing solutions, serving homeowners across Kent and surrounding areas since the 1980s. As a sister company of Sutton Windows, we combine decades of craftsmanship with market-leading products to deliver exceptional quality and reliability. Our certified workforce installs accredited uPVC, aluminium, and timber windows and doors that achieve top energy ratings, including A+ efficiency classifications. We offer bespoke conservatories, roofline products, and plantation shutters designed to enhance both modern and traditional properties. With over 1,000 installations completed, our team prioritises fast turnaround times and stress-free professional service.Our products feature advanced security mechanisms and thermal efficiency technologies to reduce energy costs while maintaining aesthetic appeal. We operate from a dedicated showroom in Sevenoaks and maintain strict quality control through British Board of Agrment approved manufacturing standards. Our commitment to innovation ensures customers receive cutting-edge solutions that combine durability with contemporary design. All installations come with comprehensive support from initial consultation through to completion. This long-standing reputation for excellence has made us a preferred choice for homeowners seeking premium home improvement solutions in Kent and Surrey.
Services
uPVC Windows
Composite Doors
Conservatories
Aluminium Windows
Roofline Products
Plantation Shutters
Tilt and Turn Windows
Sliding Sash Windows
Bay Windows
Heritage Windows
Details
- Year established: 1980
Highlights and features
- Certified workforce ensuring professional installations
- Competitive pricing across all product ranges
- Quick and stress-free installation process
- Award-winning installers with decades of experience
- Over 1,000 successful installations since the 1980s
Associations and certifications
- British Board of Agrment
Services
uPVC Windows
Our uPVC windows combine advanced thermal efficiency with robust security features, achieving top A+ energy ratings. Available in casement, tilt-and-turn, and sliding sash designs, these windows reduce energy costs while maintaining aesthetic appeal. The durable profiles resist weathering and require minimal maintenance over their lifespan.
Composite Doors
Engineered timber cores with uPVC cladding create our composite doors, offering superior strength and insulation. Available in modern and traditional styles, they feature multi-point locking systems and come with 10-year performance guarantees. Custom colour options ensure seamless integration with any property.
Conservatories
Bespoke conservatories utilise thermally efficient frameworks and insulated roofs to create year-round living spaces. We offer Edwardian, Victorian, and P-shaped designs with customisable glazing and ventilation options. All structures comply with building regulations and come with full installation warranties.
Aluminium Windows
Slim-profile aluminium windows provide contemporary aesthetics with exceptional durability. Available in heritage and modern styles, they feature powder-coated finishes in 200+ RAL colours and incorporate double-glazed units for optimal thermal performance and noise reduction.
Plantation Shutters
Made-to-measure plantation shutters offer precise light control and enhanced insulation. Constructed from premium hardwood and composite materials, they feature adjustable louvres and come with lifetime warranties against warping or cracking. Available in full-height and tier-on-tier configurations.
Questions
Do you provide free quotes for double glazing installations?
Yes, we offer instant free online quotes for all our products including windows, doors, and conservatories through our dedicated quoting engine.
Are your windows energy efficient?
All our uPVC and aluminium windows achieve A+ energy ratings with thermally broken profiles and 28mm double-glazed units as standard.
Do you install conservatories in listed buildings?
Yes, our heritage conservatories meet conservation area requirements with authentic designs that replicate traditional architectural styles while incorporating modern insulation.
What warranty applies to your products?
We provide 10-year manufacturer warranties on all windows and doors, with 20-year guarantees on structural conservatory components and framework.
Can I customise window and door colours?
Yes, we offer 200+ RAL colour options for aluminium products and 12 woodgrain foils for uPVC, with dual-colour options available for external/internal finishes.
Do you offer emergency repair services?
While we don't provide 24/7 emergency repairs, we prioritise urgent glazing issues and aim to complete temporary repairs within 24 hours of notification.
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