50 years double glazing experience

FineLine Windows are one of Kent’s most well respected double glazing companies. Having been in business for the last 50 years, we have been installing high quality products for both domestic and commercial customers for decades. We have an excellent reputation for professional installations and outstanding customer care and we’re committed to improving the lives of all our customers.

Multi award-winning company

Here at FineLine, we’re proud to have won many prestigious awards for our products as well as our work in the community. We're delighted to have received the prestigious Installer of the Year award which sets us apart as the best window, door and conservatory installer in the UK, beating over 13,000 other companies. This makes us the best choice for your next home improvement project. Being recognised for our work in the community as well as our reliable customer service and transformative home improvements makes all the difference.

SEHBAC - Showroom Winner Ultraframe design awards winner 2020 Conservatory and Orangery Awards logo 2019 NHIC Community Confidence 2018 Award Winners

Quality windows, doors, and conservatories

At FineLine Windows, we are experts in bespoke home improvements. We specialise in creating individual products, tailored to meet each customer’s exact specifications. We offer all our customers a wealth of experience from product design to final installation.

We have stylish show rooms in both Dartford and Maidstone which perfectly showcase our products. Come along and see our state of the art conservatories and try our top quality double glazed windows and doors. Speak to one of our friendly team of advisors and gain inspiration for your own home improvement project.

Replacement upvc white windows

Customer care

At FineLine Windows, we care about our customers. We treat all our customer’s homes like they were our own and strive for excellence in all our installations. Our fitters are reliable and courteous and adhere to strict health and safety standards at all times.

When working at a property, we aim to minimise disruption to our customer’s home life and always leave a property in the exact state we found it in; removing any rubbish and leaving the area clean and vacuumed. We provide a 10-year guarantee on all our installations, so you can rest assured that with FineLine Windows you have a made a solid investment.

FineLine Windows have gone from strength to strength over the past few years and will continue to provide a quality service to all our customers throughout Kent and beyond.

An experienced team of professionals

The staff at FineLine Windows are sure to exceed whatever expectations you may have. Committed to providing you with a stress-free experience from the initial quotation to your installation and aftercare.

When you choose to have your home improvements installed by FineLine, you're making sure you'll be taken care of. A vast amount of installations under our belt means it just comes naturally at this point!

G17 awards winner

FineLine's many awards and accreditations

Over the years, FineLine Windows has earned many different awards and has been accredited by a number of relevant industry organisations. Previous winners of the G-Awards, the NHIC Community Benefit Award, and MWCIA South East Company of the Year, you can trust you're in good hands.

View the full list of awards & accreditations

Local commitment with a national presence

We’re proud to be a part of One Group Construction who are able to carry out any project, no matter how big. This successful holding company with over £100 million yearly turnover has a collection of construction businesses across the UK from commercial and residential building to renewable energy solutions. With One Group behind us, we have the experience to ensure your home transformation project is a success. It also gives us access to a large network of suppliers and industry professionals to ensure every project is completed on time and with completely satisfied customers.

One Group's Construction Services

As part of the wider One Group Construction network, we have access to a whole range of builders, designers and experts who can undertake a range of commercial projects from residential to larger developments such as office buildings and hotels.

Our Accreditations

BSI 9001 2015
Fensa Approved Installer
Ultraframe conservatory installer