02920 734573

Replacement Windows, Penarth

Windows by Rehau, Synseal & Deceuninck.

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Quality Rehau A+ rated frames as standard

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Rehau Windows with 11 Point Locking System Standard

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Available in a range of styles and finishes

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Bespoke design to enhance your windows and doors

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Energy saving trust recommended products, saving you money

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Double Glazing to Suit Your St. Mellons Home

Inspire Windows has been a supplier of premium double glazing window and door products in St. Mellons and South Wales for over 15 years. We pride ourselves on the expertise and service that have built our reputation, making us the perfect choice for your next home installation. 

We are a local company to St Mellons, but as CERTASS registered installers and an established partner of REHAU Windows – Europe’s leading manufacturer of secure and energy efficient double glazing – we ensure that your new double glazed windows are of the highest possible quality.

To discuss your next double glazing project with us, contact our friendly team of experts on 02920 734573 today!

Local Cardiff company

REHAU Windows: Authorised Partner

Certass-registered installer

10 year insurance-backed guarantee on all frames, glass and hardware

A+ rated windows as standard

Over 15 years of experience

Expert Double Glazing Installations in St. Mellons

With over 15 years of experience installing double glazed windows and products, we offer a premium standard of service focused on professionalism, quality, efficiency and discretion. Our balanced personal and professional approach to our projects means that one of our central priorities is to cause as little disruption to your day to day life as possible whilst working on your home. 

We never compromise on the quality of our work and customer satisfaction with our services. Discuss how we can help you upgrade your St. Mellons home with new double glazing – contact our team now! 

Premium Quality Double Glazing

As CERTASS-approved installers of double glazing, we guarantee that your home is receiving the very best quality in thermal efficiency, security and durability. Enhance your home with the market leaders, and be confident that you are receiving the highest standard of double glazing with professional installers. 

We know that the most important thing to you is the comfort and security of your home and family. All of our double glazing products are tested rigorously to ensure that they meet the incredibly high standards we hold for security, in accordance with police recommendations. You can relax and enjoy peace of mind knowing that your St. Mellons home is protecting you because you chose the best in the business.

High Performance Double Glazing in St. Mellons

Thermal Efficiency 

Did you know that high quality double glazing can reduce the energy required to keep your home warm by up to 60% over its lifetime? As the energy efficiency of your home goes up, your energy bills come down! Our REHAU double glazing is designed to keep warm air in and cold air out, maintaining the desired temperature of your home all year round to keep you comfortable. Reduce your energy bills and your carbon footprint by installing premium double glazing in your St. Mellons home with Inspire Windows. 

Low Maintenance Windows 

Our uPVC replacement windows are manufactured to guarantee a sleek, glossy finish, ensuring a flawless finish for years. We know that no one wants to come home from work and scrub the house, which is why our double glazed windows require nothing more than a quick wipe with a damp cloth now and again – saving you time and effort! Your uPVC windows will never rot, warp or fade, giving you that brand new feeling again and again. 


Our uPVC double glazing has been scientifically proven to reduce noise pollution by up to 50%, giving you peace and privacy! Keep out the unwanted noise of the St. Mellons traffic or bad weather, and keep your home peaceful and personal. 

Double Glazing Prices in St. Mellons

You can be confident in the quality of your double glazing when you choose us, as all our products come with a 10 year manufacturer’s guarantee in addition to a 10 year insurance-backed guarantee. With a detailed aftercare guide, we can help you to take the best possible care of your new double glazed windows or doors, and make the most of your St. Mellons home! 

To see our work for yourself, visit our gallery now to see some of our previous work in and around St. Mellons! 

With an expert team and competitive prices, our double glazing installations are the smart choice for your St. Mellons home. To discuss your requirements and to see how we can help, book a free consultation now – our friendly double glazing guides will be only too happy to advise you! 

Contact us on 02920 734573 to chat with our team today, or click here to get a free online quote bespoke to your specifications.

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