uPVC Sliding Sash Windows Portsmouth | Sash Windows Cost Portsmouth

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The Look of Timber, Without the Maintenance

Invite a traditional look to your Portsmouth property with our uPVC sliding sash windows. Using the Deceuninck profile, our windows provide the modern performance of uPVC with the aesthetics of traditional timber. Add elegance to your home with sliding sash windows.

Whether your property is heritage-style or a contemporary build, this style fits perfectly with the existing decor. The wealth of benefits include thermal efficiency, exceptional security and full weatherproof design. Make a worthwhile investment with a beautiful uPVC sliding sash window.

The team here at Novaseal are dedicated to providing unrivalled customer service. We carry out each project efficiently, offering any advice and guidance along the way. Our fantastic customisation options will let you choose the perfect sliding sash window.

Trade Customers

Free Cordless Drill

And Discounted Trade Prices

Receive Quick Lead Times, Use of Showroom and Expert Support Along with Many More Reasons to Choose Us as Your Trade Supplier.

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Colour Options

Irish Oak


Agate Grey

Smooth Anthracite Grey

Anthracite Grey

Chartwell Green

Natural Oak

Long-Lasting uPVC Sliding Sash Windows

Our profiles excel in performing at the highest standard for years. With low maintenance needed, you won’t have to worry about the windows looking and performing their best. Regarding upkeep, all that’s required is a wipe down with a damp cloth every so often, maintaining the sleek appearance.

uPVC is a durable material, favoured for its superior performance qualities. This makes them the ideal investment for any Portsmouth home. The profile won’t warp, crack, or lose its colour, even during the most extreme weather conditions. Our windows are an excellent long-term investment.

Bespoke uPVC Sliding Sash Windows

Match the décor of your home with our wonderful range of customisation options. Choose a colour to match your property or opt for something a bit bolder. We also offer a wide selection of woodgrain finishes for a truly traditional look to your Portsmouth home.

Our glazing designs will add a unique touch to the finished product. We offer floral patterns as well as more subtle designs. Our hardware selection comes in a range of colours to match the hinges and locks. Any homeowner will be proud of the finished look of their property.


Modern Design

Each uPVC sliding sash window has slim sightlines that minimise the frame thickness. This maximises the expanse of glass that the frame holds. Because of this, you can benefit from increased natural sunlight. Keep your electricity bills low as you utilise sunlight through the windows.

Energy Efficient

Our double glazed sash window units use thermally efficient glass. They have the capability of achieving a fantastic A+ Window Energy Rating (WER) to retain heat for longer. This will keep your energy usage at a minimum so you can make a positive environmental impact.


The easy operation allows for a smooth and seamless opening. Due to the balance mechanism, the windows will effortlessly ease open to let air circulate your home. Both sashes tilt inwards within the profile. Cleaning will be a simple task due to the exceptional functionality.


Keep draughts and cold winds from lowering the temperature of your property with our sliding sash windows. The seals on the outer frame, as well as the sash, will eliminate the potential for rain to seep in. This will prevent any damage from occurring from even the most extreme weather.



Glass Options


















Deceuninck Traditional 2500 Collection

Find out about the Deceuninck 2500 Traditional profile and how you can customise it to add value to your project. The Novaseal team will be able to answer your questions, and you can retrieve a uPVC sliding sash windows quote within minutes using our dedicated design tool.

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Why Choose Novaseal?

For your peace of mind, we have a variety of certifications that we are proud to hold. We are members or Certass and Which? Trusted Traders, ensuring we are a reliable home improvement company.

We use the fantastic uPVC sliding sash profile from Deceuninck. This is one of the most favoured profiles on the market today due to it’s plethora of benefits. The windows are designed to last for decades.

We never want to catch our customers out, and are always open and honest about our pricing. We work to a range of budgets and design every product to your specifications and the space in your property.

uPVC Sliding Sash Prices Portsmouth

Enhance your property in Portsmouth with our fantastic uPVC sliding sash windows. The renovations are secure, thermally efficient and low maintenance.

You can use our free quoting engine to get a bespoke price. You can use online design tool to explore our customisation options and find out how much your next project will be. Use this as many times as you like on our entire range of products!

For help, please call our experienced team on 01329 233500 or send us a message by using our contact form. We are happy to answer any queries you may have. We look forward to hearing from you!


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