Business Details
50+ Years
experience
Trusted uPVC Windows & Doors in Epsom
Marathon Windows has been a trusted name in the double glazing industry since 1975, serving Epsom, Surrey, and surrounding areas. As a family-owned business, we specialise in supplying and installing high-quality uPVC windows, doors, conservatories, and roofline products, combining advanced technology with craftsmanship. Our commitment to excellence is reflected in our FENSA registration, Secured by Design accreditation, and partnerships with leading manufacturers like Eurocell and Origin. We prioritise customer satisfaction through competitive pricing, a no-pressure sales approach, and a 10-year guarantee on all products.Our team of experts ensures every installation meets rigorous standards for security, energy efficiency, and aesthetics. With over 40 years of experience, we remain dedicated to enhancing homes with durable, sustainable solutions tailored to individual needs. Our online quoting tool provides instant, transparent pricing, while our showroom in Epsom offers personalised consultations. Recognised by Which? Trusted Traders, we continue to build a reputation for reliability, innovation, and exceptional service in the home improvement sector.
Services
uPVC Windows
Composite Doors
Bi-Fold Doors
Conservatories
Roof Lanterns
Sash Windows
Tilt and Turn Windows
Plantation Shutters
Energy-Efficient Glazing
Roofline Improvements
Details
- Year established: 1975
Highlights and features
- We have over 40 years of experience in the double glazing industry.
- Our products are FENSA registered and Secured by Design approved.
- We offer competitive prices with a free online quoting tool.
- Our dedicated in-house fitting teams ensure quality installations.
- We provide a 10-year guarantee on all products.
Associations and certifications
- FENSA
- Secured by Design
What people say
Quality and value for money
Workman courteous
Would recommend
Excellent service
Durable installations
Services
uPVC Windows
Our uPVC windows combine advanced engineering with sleek design, offering superior thermal efficiency and security. Manufactured using 100% recycled materials, they feature multi-chambered profiles for insulation and A-energy ratings. Each window includes multi-point locking systems and optional security upgrades, ensuring durability and compliance with industry standards. Ideal for enhancing property aesthetics while reducing energy costs.
Composite Doors
Our composite doors provide exceptional strength and thermal performance, designed to withstand harsh weather and intrusions. Available in various finishes, they feature high-security locking systems and low-threshold options for accessibility. The durable construction ensures long-term reliability, making them a secure and stylish choice for residential properties.
Conservatories
Bespoke uPVC conservatories add light and space to homes, available in Victorian, Edwardian, and lean-to styles. Constructed with weatherproof materials and advanced glazing, they maintain comfortable temperatures year-round. Customisable designs include dwarf walls and decorative crestings, offering versatile living spaces that enhance property value and functionality.
Roof Lanterns
Roof lanterns brighten flat-roof extensions with natural light, featuring clean sightlines and self-cleaning glass. Available in multiple sizes and colours, they achieve U-values as low as 1.0 for thermal efficiency. The 10-year guarantee ensures lasting performance, making them a cost-effective alternative to traditional roof systems.
Bi-Fold Doors
Aluminium and uPVC bi-fold doors create seamless transitions between indoor and outdoor spaces. With slim sightlines and secure locking mechanisms, they offer unobstructed views and easy operation. Available in custom configurations, these doors enhance modern living areas while maintaining energy efficiency and aesthetic appeal.
Questions
What areas do Marathon Windowss cover?
We serve Epsom, Surrey, London, and the South East, including Croydon, Coulsdon, and Crawley.
Are your products energy efficient?
Yes, our uPVC windows and doors have A-energy ratings and advanced glazing for thermal efficiency.
Do you offer a guarantee?
All products come with a 10-year guarantee against defects and performance issues.
Can I get a free quote?
Yes, use our online quoting tool or contact us for a free, no-obligation quote.
Are your installations FENSA registered?
Yes, we are FENSA registered, ensuring compliance with building regulations.
Do you provide emergency services?
No, we do not offer emergency repair services outside regular working hours.
