Double Glazing in Leatherhead

Double Glazing in Leatherhead

We offer the highest quality double glazing solutions for your Leatherhead home with an incredible performance.

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Double Glazed Windows and Doors in Leatherhead

Welcome to Marathon Windows, where we understand that double glazing is not just about improving your home’s thermal efficiency, but also about providing security and peace of mind for you and your loved ones! Our team of experts are dedicated to ensuring that your home improvement project is tailored to your specifications and we offer a wide selection of double glazing windows, doors, orangeries, and conservatory roofs to choose from.

We are proud to say that we are Which? Trust Traders and FENSA registered, as we believe in providing our valued customers with the best installation possible. Our double glazing windows and doors have a Window Energy Rating (WER) of ‘A’, guaranteeing a thermally efficient home solution that will insulate your interior and prevent cold draughts from coming in. You should become less reliant on your central heating system, which can save money on your energy bills.

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Thermally Efficient

Our windows and doors are designed to provide superior thermal insulation, reducing heat loss and improving energy efficiency.

We use high-quality materials and advanced manufacturing techniques to ensure that our double glazing products are airtight and provide excellent insulation, helping to reduce your energy bills while keeping your home warm and comfortable.

Safe and Secure

We offer a range of options for enhanced security, including multi-point locking systems (accredited by Secure by Design), toughened glass, and reinforced frames that all comply with the latest building safety regulations. Our windows and doors are tested to meet the highest security standards, providing peace of mind that your home is well-protected against intruders.

With Marathon Windows, you can be confident that you’re investing in double glazing products that are not only energy-efficient but also secure and built to last!


We know that choosing the right windows and doors for your Leatherhead home is an important decision. That’s why we offer a wide range of double glazing products to cater to your individual preferences and needs. You can mix and match different styles throughout your home, or opt for a single replacement feature – whatever your choice, we are here to help you find your dream windows and doors!

Our window selection includes uPVC windows, tilt & turn windows, casement windows, sash windows, and flush casement windows, all available in a range of colours to suit your personal style.

You can choose from cream, grey, Irish oak, golden oak, rosewood, or white. Our woodgrain effects are textured to give you an authentic wooden look with the added benefits of uPVC performance, so your Leatherhead property can have the best of both worlds.

We prioritise the thermal efficiency and security of our double glazing products. Our uPVC double glazing is BBA certified and manufactured by Eurocell using 100% recycled material, making it a sustainable and eco-friendly option for your home. You can trust that your investment is covered for 10 years with our guarantee, and maintenance is as simple as wiping them down with a damp cloth.

At Marathon Windows, we are committed to providing you with the highest quality double glazed windows that will make your Leatherhead home a stylish, comfortable and secure place to live in!

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We understand that finding the right doors can be overwhelming, but our team of experts is always ready to help you find the perfect match for your home, so working with us at Marathon Windows ensures that you are provided with your dream double glazing solution!

By choosing us, you can expect a large suite of doors, including uPVC, composite front doors, French doors, patio doors, residential doors, and uPVC or aluminium bifold doors, that fit any style and preference. And just like our windows, all our doors come with double glazing as standard, providing superior thermal efficiency that will keep your Leatherhead home warm and cosy all year round.

Our patio style doors are not only stylish but also energy-efficient, with extremely low U-values that prevent heat from escaping your home. What’s more, with optimal light transmission, you’ll enjoy more natural light in your space.

If you happen to have a smaller home, our slimline sliding doors are the perfect solution, as they don’t require any swing or folding space, giving an illusion of a much larger room.

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Double Glazing Prices in Leatherhead

Get a free, no-obligation quote for your double glazing project today by using our online quoting engine. It’s quick, easy, and convenient!

Alternatively, if you have any questions or queries, you can give us a call at 01372 740 706 or fill out our online contact form, and we will get back to you as soon as possible. We are committed to providing excellent customer service and helping you find the perfect double glazing solution for your Leatherhead home. We can’t wait to hear from you!

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