J Paterson The Window

Business Details

28 Years

experience

Trusted Home Builders 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 Which? Trusted Trader, 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 installation guarantee, 24-year warranties on sealed units, and 14 merit awards for customer satisfaction since 1998.

We prioritise impartial advice, no-pressure sales, and in-house installation teams to ensure consistent craftsmanship. Our director, John Paterson, personally oversees every project, reflecting our dedication to maintaining the highest standards in product selection, energy efficiency, and customer service.

Services

Double Glazed Windows Composite Doors Conservatory Conversions Home Extensions Flat Roofing Garden Rooms Porches Window Shutters

Details

Year established: 1998

Highlights and features

Established in 1998 with over 20 years of expertise in home improvements
FENSA registered for quality compliance and customer assurance
10-year guarantee on all installations with deposit protection
In-house team of skilled professionals ensuring consistent quality
Awarded 14 merit awards for customer satisfaction since 1998

Associations and certifications

Which? Trusted Trader
FENSA

What people say

Superior product quality Excellent customer service Professional installation team Competitive pricing Long-term guarantees

Website

Update Listing

Services

Double Glazed Windows

Our double-glazed windows combine thermal efficiency with durability, featuring Rehau profiles and Super Spacer bar technology. Designed to reduce energy bills and noise pollution, they are available in uPVC, aluminium, and heritage styles. Backed by a 10-year guarantee, they enhance property value and comfort.

Composite Doors

Composite doors offer enhanced security and aesthetic appeal, available in modern and traditional designs. Installed with precision, they improve insulation and property security. Backed by a decade-long guarantee, they are sourced from leading brands like Endurance Doors and Spitfire.

Conservatory Conversions

Transform outdated conservatories into energy-efficient living spaces using the hup! modular system. This five-times-more-efficient solution replaces old structures with insulated walls, windows, and roofs. Completed in weeks, it includes full project management and a 10-year guarantee.

Home Extensions

The hup! modular extension system delivers fast, energy-efficient home expansions with U-values of 0.17 W/mK. Designed to match existing properties, installations include custom layouts, finishes, and full project oversight. Completed five times faster than traditional builds, with a 10-year guarantee.

Flat Roofing

Trufit insulation and flat roofing solutions enhance thermal performance and durability. Installed by our in-house team, these systems prevent leaks and improve energy efficiency. Backed by industry-leading warranties, they are ideal for porches, extensions, and commercial properties.

People

John Paterson

Director

John Paterson founded the company in 1998 and oversees all projects. With over 25 years in the industry, he ensures quality through in-house training, direct client engagement, and partnerships with leading brands like Rehau and Spitfire Doors.

Questions

What areas do you cover?

We serve all of Kent, including Canterbury, Ashford, Margate, and Dover, from our Whitstable showroom.

Are your installations guaranteed?

Yes, all work includes a 10-year guarantee with deposit protection and insurance-backed assurance.

Do you offer free quotations?

Yes, we provide no-obligation free quotes and site surveys with no pressure to commit.

Are you FENSA registered?

Yes, we are FENSA registered (number 11725) and Which? Trusted Traders.

Can you replace old conservatories?

Yes, we convert outdated conservatories into energy-efficient extensions using the hup! system.

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Reviews (6)

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Heidi Elkesson

Oct 31, 2021 Report

John managed to start the work around the time he had forecast, and judged the exact timing beautifully to avoid weather problems for us. The whole job was completed faster than expected, and the finished conservatory is absolutely super - bright and clean and sound. Would have no hesitation in recommending this company!
Service:Glass installation

Steve Lloyd

Oct 02, 2021 Report

We had a Composite door fitted by The Window Company at the end of 2016. This warped and twisted after 4 years and was pulling the frame away from the house. Contacted John Paterson (owner) who attended and made some alterations to the hinge side, stating he would contact the manufacturer to request a new door to be manufactured as this one was faulty. John Paterson made little effort with the manufacturer and I had to chase him on several occasions asking for an update, in the end he stated I cant do much more. This left it to me to contact the manufacturer who were helpful in sending

Caroline Doherty

May 02, 2021 Report

Great personal service, the quality of the product is fantastic better than anything else on the market. We were recommended to John Paterson Windows and now we know why!

Alfie Smith

Nov 06, 2020 Report

Positive:Professionalism
Great service from the start, had been recommended J.Paterson by a few people and was not disappointed, turned up when they said they would and went above and beyond to get the job done. Top quality and will definitely be using them again.
Service:Window installation

Hannah Fleming

Oct 17, 2020 Report

Really pleased we decided to go with J.Patersons to have all our windows replaced. Excellent communication, quick and clear. Answered all our questions before going ahead with the job in a thorough and precise manner. Delivery and fitting was much sooner than expected and cant fault the standard at all. Im pretty fussy and they look great. Fitter did an excellent job, very professional and pleasant to have around, friendly and tidy. Completely happy to recommend to others!

Nancy Hodgkinson

Nov 22, 2018 Report

Can't speak too highly of the service from this company. Working round snow and freezing conditions, they rescheduled and worked to an amazing standard to fit my windows to a high standard without any fuss or disruption to the interior. Am totally delighted with the results and, although the fitters ( both lovely) would probably not agree, it was a painless experience --for me at least!