Business Details
50+ Years
experience
Bespoke Windows & Doors in Kent
FineLine Windows has been a trusted name in home improvements for over 50 years, specialising in bespoke windows, doors, conservatories, and extensions. Our commitment to quality is reflected in our 10-year product guarantees and the use of premium materials such as Eco-Max glass, which combines sustainability with high-performance insulation. With showrooms in Dartford, Maidstone, and Warlingham, we offer expert guidance and a seamless customer journey from initial consultation to installation. Our team of skilled professionals ensures minimal disruption during installations, adhering to strict health and safety standards while delivering tailored solutions that enhance both aesthetics and energy efficiency.Recognised through awards like the G-Awards and MWCIA South East Company of the Year, we combine industry expertise with a dedication to customer satisfaction. As part of the One Group Construction network, we leverage extensive resources to deliver comprehensive home improvement projects across Kent and beyond. Our accreditations and partnerships underscore our commitment to professionalism, while our Trustpilot reviews attest to the trust we have built with homeowners over decades.
Services
Windows
Doors
Conservatories
Extensions
Garage Conversions
Roofline
Cladding
Details
- Year established: 1975
Highlights and features
- 50 years of expertise in bespoke home improvements
- 10-year product guarantees on all installations
- Free, no-obligation quotes and site surveys
- Award-winning customer service and product design
- Eco-friendly solutions with recycled materials
Associations and certifications
- G-Awards
- NHIC Community Benefit Award
- MWCIA South East Company of the Year
What people say
Excellent service
Professional installers
High-quality products
Minimal disruption
Transformative results
Services
Windows
Our bespoke windows combine energy efficiency with aesthetic appeal, available in uPVC, aluminium, and heritage styles. Each installation uses Comfort Glass and integral blinds for enhanced insulation. Tailored solutions ensure perfect fit for both modern and period properties.
Doors
From composite front doors to bi-fold patio options, our doors offer security and style. Features include architectural hardware, decorative glazing, and low-aluminium thresholds for improved accessibility and durability across residential properties.
Conservatories
Custom conservatories utilise uPVC or aluminium frameworks with choice of tiled or glass roofs. We specialise in orangery designs and refurbishments, incorporating energy-efficient glazing to create year-round living spaces that blend seamlessly with existing architecture.
Garage Conversions
Professional garage conversions maximise underused space, incorporating insulation, electrical upgrades, and bespoke finishes. Our team manages full project delivery from planning permission to final fit-out, creating functional rooms tailored to client requirements.
Roofline
Durable uPVC roofline solutions include fascias, soffits, and cladding systems designed to enhance property aesthetics while requiring minimal maintenance. Our installations improve thermal efficiency and weather resistance for long-term property protection.
Questions
What products does FineLine Windows offer?
We specialise in bespoke windows, doors, conservatories, extensions, and garage conversions tailored to individual property needs.
Do you provide guarantees on installations?
All installations come with a 10-year product guarantee as standard, covering both materials and workmanship.
Are finance options available?
Yes, we offer 0% APR representative financing and flexible payment plans to suit different budgets.
How long does installation take?
Most projects, including extensions, are completed within four weeks from the start of installation.
Can I visit a showroom?
Our state-of-the-art showrooms in Dartford, Maidstone, and Warlingham showcase full product ranges for hands-on exploration.
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