Business Details
50+ Years
experience
Trusted Double Glazing Solutions in Epsom, Surrey
Marathon Windows, established in 1975, is a family-owned business based in Epsom, Surrey, with over 40 years of experience in supplying and installing high-quality uPVC windows, doors, conservatories, and roofline products. We pride ourselves on offering energy-efficient, secure, and aesthetically pleasing solutions tailored to meet the needs of homeowners across Surrey, London, and the South East. Our products are sourced from leading manufacturers like Eurocell and Origin, ensuring durability and thermal efficiency. Accredited by FENSA and Secured by Design, we provide a 10-year guarantee on all installations, backed by Which?Trusted Traders endorsement. Our team of experts delivers a no-pressure sales approach, with in-house fitting teams ensuring precision and customer satisfaction. With a showroom in Epsom and a commitment to sustainability, we combine advanced engineering with British craftsmanship to enhance homes while maintaining affordability. Our online quoting tool allows customers to generate instant, customised double glazing prices, reflecting our dedication to transparency and convenience.
Services
uPVC Windows
Composite Doors
Bi-Fold Doors
Conservatories
Roof Lanterns
Double Glazing
Energy Efficient Windows
Plantation Shutters
Roofline Improvements
Online Quote
Details
- Year established: 1975
Highlights and features
- Over 40 years of experience in double glazing installations.
- Which? Trusted Traders accredited for customer satisfaction.
- No pressure sales approach with in-house fitting teams.
- Secured by Design approved for enhanced home security.
- BBA-certified products with a 10-year performance guarantee.
Associations and certifications
- FENSA
- Secured by Design
- Which? Trusted Traders
- Independent Warranty Association
- Financial Conduct Authority
What people say
Great Service!
Professional assistance
Workman courteous
Would recommend
Very happy with windows
Services
uPVC Windows
Our uPVC windows combine thermal efficiency with robust security, featuring multi-chambered profiles and A-rated energy performance. Designed to reduce draughts and heating costs, they come in casement, tilt-and-turn, and sash styles. Backed by a 10-year guarantee, these windows are BBA-certified for durability and available in custom colours and finishes to suit any property.
Composite Doors
Enhance home security and aesthetics with our composite doors, engineered for superior insulation and durability. Available in traditional and modern designs, they feature high-security locking systems and low-threshold options. Each door is tested to meet British Standards, ensuring long-term performance and enhanced kerb appeal for Surrey properties.
Conservatories
Transform your space with bespoke uPVC conservatories, offering enhanced light and thermal efficiency. Choose from Victorian, Edwardian, lean-to, or orangery styles, all built with weatherproof materials and advanced glazing. Designed to blend seamlessly with your home, these extensions provide year-round comfort and added property value.
Roof Lanterns
Brighten interiors with our uPVC roof lanterns, ideal for flat roofs and extensions. Featuring self-cleaning glass and U-values as low as 1.0, they maximise natural light while maintaining energy efficiency. Customisable in size, colour, and style, these lanterns come with a 10-year guarantee and enhance both modern and traditional properties.
Double Glazing
Upgrade to energy-efficient double glazing, reducing heat loss and noise pollution. Our units use K-glass for optimal insulation and are available in windows, doors, and conservatories. FENSA-registered installations ensure compliance with building regulations, while Secured by Design accreditation guarantees enhanced home security across Surrey and London.
Questions
What areas do you cover?
We serve Epsom, Surrey, London, and the South East, including Croydon, Coulsdon, and Leatherhead.
Are your products energy efficient?
Yes, all windows and doors are A-rated for thermal efficiency, reducing energy bills and carbon footprint.
Do you offer guarantees?
We provide a 10-year guarantee on all products and installations for customer peace of mind.
Can I get a quote online?
Yes, use our online quoting tool to generate instant, customised double glazing prices.
Are you FENSA registered?
Yes, we are FENSA-certified, ensuring compliance with building regulations for all installations.
