Business Details
28 Years
experience
Trusted Window & Door Experts in Whitstable, Kent
Established in 1998, J Paterson The Window has built a reputation as a trusted provider of premium home improvement solutions across Kent. As a Rehau Authorised Partner and FENSA-registered company, we specialise in double and triple-glazed windows, composite and aluminium doors, conservatories, and innovative hup! modular extensions. Our commitment to quality is underscored by a 10-year guarantee on all work, 20-year warranties on sealed units, and a proven track record of 14 merit awards for customer satisfaction from the Independent Warranty Association.We pride ourselves on offering impartial advice, competitive pricing, and a pressure-free service, with every project personally overseen by Director John Paterson. Our team of skilled installers, trained in-house and fully vetted, ensures exceptional craftsmanship and customer-centric solutions tailored to individual needs.
Services
Double Glazed Windows
Composite Doors
Conservatories
Modular Extensions
Window Shutters
Roof Lanterns
Porch Conversions
Aluminium Windows
Bi-Fold Doors
Solid Roof Upgrades
Details
- Year established: 1998
Highlights and features
- Established for over 25 years with a proven track record in Kent
- FENSA-registered and Rehau Authorised Partner
- 10-year guarantees on all installations
- Locally owned and operated with expert installation teams
- No-pressure sales and impartial home improvement advice
Associations and certifications
- FENSA
- Which? Trusted Trader
- Independent Warranty Association
What people say
Excellent customer service
Professional installation
High-quality products
Long-lasting durability
Energy-efficient solutions
Services
Double Glazed Windows
Our double-glazed windows combine thermal efficiency with security, featuring Rehau profiles and Super Spacer technology for reduced heat loss. Available in uPVC, aluminium, and heritage styles, they enhance property value while lowering energy bills. Installed by certified professionals with a 10-year guarantee.
Composite Doors
Durable composite doors from Endurance Doors and Spitfire offer enhanced security with multi-point locking systems. Choose from modern or traditional designs to complement your home, with colour-matched finishes and low-maintenance durability. Backed by our 10-year installation warranty.
Modular Extensions
Revolutionary hup! modular extensions provide five times better energy efficiency than traditional builds. Customisable layouts with rapid installation (5x faster) and minimal disruption. Includes thermal walls, roof options, and seamless integration with existing properties, completed with a 10-year guarantee.
Conservatory Conversions
Transform outdated conservatories into year-round living spaces with solid roof upgrades and hup! system conversions. Retain existing bases while adding insulation, modern glazing, and design flexibility. Completed in weeks with full project management and energy performance improvements.
Window Shutters
Custom-made interior shutters add style and light control to any room. Available in premium materials with tilt-and-turn options for ventilation. Professionally fitted for perfect alignment, enhancing both aesthetics and functionality while maintaining thermal efficiency.
People
John Paterson
Director
With over 25 years in the industry, John personally oversees all projects, ensuring quality and adherence to our customer-first ethos. His leadership has earned 14 customer satisfaction awards and Which? Trusted Trader status.
Questions
Are your installations FENSA-certified?
Yes, we are FENSA registered (No. 11725) and provide all necessary compliance documentation for window and door installations.
Do you offer guarantees on workmanship?
All installations include a 10-year insurance-backed guarantee, with 20-year warranties on sealed units.
Can you replace old conservatories?
We specialise in converting conservatories into energy-efficient extensions using the hup! system, retaining existing bases.
What areas do you cover?
We serve all Kent postcodes, including Canterbury, Ashford, Margate, and Dover from our Whitstable base.
Do you use subcontractors?
No – all work is completed by our directly employed, in-house team of vetted professionals.
How do I get a free quote?
Contact us via phone (0800 0280634) or our website to arrange a no-obligation consultation and site survey.
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