Flush Sash Windows
Flush sash windows from Window Warehouse are expertly manufactured in Portsmouth, Hampshire, combining traditional aesthetics with modern performance. Designed to sit perfectly flush within the frame, these windows offer a clean, elegant finish ideal for both period and contemporary homes across Portsmouth, Southampton, Poole, Weymouth & Hampshire.
Whether you're renovating a heritage property or upgrading your home with energy-efficient glazing, our uPVC flush sash windows in Portsmouth provide the perfect balance of style, durability, and thermal performance. Find a double glazing installer near you today.
- Available in both double glazed and triple glazed options.
- 70mm thick uPVC profile with outer frame in either 56mm or 72mm.
- These windows can reach U-values as low as 1.1 W/m2K.
- The truly flush sash is just 61mm.
- Multi point locking for a secure and protected home.
The Classic Look Without the Hassle
Timber frames offer a timeless, traditional aesthetic, but they come with the problem of rotting frames, peeling paint, and costly maintenance. Our uPVC flush sash windows are the perfect solution. Designed to replicate the authentic look of traditional timber, they give your home that stylish, classic charm. Manufactured by our experienced team in Portsmouth, these windows are built with modern materials that deliver long-lasting performance. Unlike timber, our double glazed flush sash windows are incredibly durable and require virtually no upkeep. You get all the style you desire with the peace of mind of a modern, low-maintenance window, ideal for homes across Portsmouth and the surrounding areas.
Advanced Security for Your Peace of Mind
Your home should be your safe place. That’s why our flush sash replacement windows are designed with the latest in security technology to give you complete confidence. Every window features strong multi-point locking as standard, creating multiple secure points along the frame to make it highly resistant to forced entry. With internally beaded glazing, the glass is secured from the inside, providing an extra layer of protection. Whether you're upgrading a property in Portsmouth or elsewhere in Hampshire, these features ensure your new double glazed windows keep your family and belongings safe and secure.
Built to Last, Guaranteed for 10 Years
Choosing new windows is a significant investment, and you deserve a product and a partner you can trust. With over 35 years of manufacturing experience at our Portsmouth-based facility, we have the expertise and knowledge to ensure every window we produce is of the highest quality. We stand behind the design and durability of our products, which is why every one of our flush sash windows comes with a full 10-year guarantee. This is our promise that you are investing in a reliable, long-lasting solution, perfect for homeowners in Portsmouth and across the South Coast. Contact us today or alternatively get a free no-obligation quote and start your home improvement journey today!
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Fully Customisable Flush Sash Windows
Our uPVC flush sash windows offer a customisable solution to suit your property and personal style perfectly. we offer sash windows across the South of England, including Aldershot, Andover, Basingstoke, Bournemouth, Dorchester, Farnborough, Fleet, Poole, Southampton, Weymouth and Winchester. With a wide range of colours, authentic finishes, and decorative designs available, you can truly make your new double glazed windows your own. Beyond aesthetics, our commitment to high-quality construction ensures you will enjoy your windows for years to come. That's why we back every installation with a comprehensive 10-year guarantee for complete peace of mind.
Design Your WIndow
Improved Comfort and Energy Efficiency
Flush sash windows are not just about looks; they are designed for superior performance. Our double glazed windows feature excellent thermal efficiency, creating an effective barrier against the outside elements. This helps to keep your home warmer in the winter and cooler in the summer, preventing heat from escaping and cold draughts from entering. By improving your home's insulation, our energy efficient windows can help you reduce your reliance on heating and potentially, in turn, lower your energy bills.
Get Your Quote
Why Choose Window Warehouse?
When it comes to such an important home improvement project, choosing the right supplier is essential. As a manufacturer with over 35 years of experience, we have a level of expertise that sets us apart. We handle every step of the process with care, ensuring our uPVC flush sash windows meet the highest standards of quality and manufacturing. By choosing Window Warehouse, you are not just getting a product; you are partnering with a reliable, local expert dedicated to making your window replacement journey as smooth and stress-free as possible. We also have a dedicated network of installers who are trusted within the industry to deliver the best results possible.
You can contact our team to discuss your project, or use our online quoting tool for a custom quote.
Contact Us
Introducing VEKA Feinstruktur
Introducing VEKA Feinstruktur for your Window Warehouse uPVC windows. We specify market-leading quality with modern design. These uPVC frames mimic the clean lines of aluminium flush sash windows. With their finely-textured, low sheen matte finish, they give a high end look at a fraction of the cost. Their quality coating resists any scratching or fingerprints which guarantees long-lasting performance and sophisticated look.
Choose from a range of shades to achieve low maintenance but stylish window replacements. Contact Window Warehouse today for quotes on Feinstruktur uPVC windows.
Get In Touch
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View Our Brochure
You can discover the individual benefits of our flush sash windows in our latest supplier brochure.
Hardware options are an essential part of the overall look of your flush sash windows. Depending on what you choose, your double glazed windows can adopt either a more contemporary look, in keeping with your new build, or a more traditional aesthetic which is perfect for traditional and heritage properties. There are many ways to customise your new double glazed windows. You can choose a window style that suits you by selecting design features for nearly every aspect of your flush sash windows, from the handles to locks and even the hinges.
Complete the look of your flush sash windows with our beautiful window hardware options today.
Inline Espag Handle
Offset Espag Handles
Flush Sash Window Prices Hampshire
Upgrade your next project with high-quality flush sash windows from Window Warehouse. Designed to combine traditional aesthetics with modern performance, our flush sash windows are the ideal choice for homeowners and installers looking to deliver outstanding results. Get in touch with our team today to discuss your requirements or request a quote through our free online quoting tool.
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View Our Inspiration Gallery
Take a look through our inspiration gallery where you can find our uPVC flush sash windows installed in properties just like yours!
View GalleryLatest Product Video
Take a look at our latest uPVC flush sash window product video for an even deeper understanding of our product.
View VideosFrequently asked questions
Can’t find the answer you’re looking for? customer support
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+What are flush sash windows?
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+Are uPVC flush sash windows energy efficient?
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+Are flush sash windows suitable for period properties?
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+Are flush sash windows right for coastal areas?
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+Will flush sash windows increase the value of my Portsmouth home?
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+How much do new flush sash windows cost?
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