At Novaseal in Cosham, we understand the importance of combining style, security, and durability in building products. This is evident in our range of uPVC French doors, designed to enhance and secure your commercial project or client properties with class. Known for their robust quality, our uPVC French doors offer outstanding thermal efficiency and a marked reduction in outside noise, making them an ideal choice for businesses prioritising comfort without compromising on aesthetics.
Our uPVC French doors will add a touch of traditional style to any home, thanks to the sculpted, chamfered designs of the Deceuninck Traditional 2500 range. Their design is also extremely convenient.
Choose uPVC French doors that open inward or outward, depending on your preference. The latter option is useful when space is limited, as homeowners can place their furniture along the edge of the room.
However, you can upgrade your uPVC French doors to have a flush sash that opens outwards.
Deceuninck uPVC French doors are designed to provide excellent protection against the elements, making them a reliable choice for homes in Cosham. Hidden gaskets are built directly into the profile, while high-quality weather seals and a toughened sealed unit help prevent wind and rain from entering your Cosham property.
Our uPVC French doors also deliver impressive thermal efficiency. With double-glazed units capable of achieving U-values as low as 1.5, they help retain heat inside your home, reducing energy bills and lowering carbon emissions. Get in touch with our team today to find out more about upgrading your Cosham home.
Contact us for further information today.
Deceuninck Traditional 2500 Collection
Find out about the benefits of choosing a door from the Deceuninck Traditional 2500 range. Explore the thermal benefits of a uPVC French door, find out how it will make your home more secure, and learn how to fine-tune its design with our range of hardware, accessories, glazing, and much more. Contact us for details.
Novaseal can help with every aspect of a project. Match your new uPVC French doors with Deceuninck windows to ensure a consistent design, then colour-match them inside and out. With 20 years of industry experience, we’ll find a solution that works, resulting in a home, orangery or conservatory that looks incredible.
Our uPVC French doors have no weak points, benefitting your Cosham home in a variety of ways. Each profile offers incredible aesthetic benefits and is crafted using industry-leading technology designed to meet and exceed high industry standards.
Advanced Glass Solutions
Recognising the diverse needs of commercial spaces, Novaseal offers advanced glass solutions with its uPVC French doors. Our options include double glazing for enhanced thermal efficiency and triple glazing for superior energy conservation and sound insulation.
These features are pivotal in areas such as Cosham, where energy efficiency can significantly affect operating costs and comfort levels. Selecting the right glazing option can transform the practicality and comfort of any developable space.
Eco-Friendly and Sustainable
Our commitment to sustainability is evident in every uPVC French door we manufacture. Engineered to reduce energy consumption, these doors help maintain consistent interior temperatures and use eco-friendly, fully recyclable materials.
As businesses in Cosham increasingly pursue green certifications, incorporating Novaseal’s uPVC French doors aligns with sustainability goals, helping protect the planet and potentially boosting property values.
Professional Installation and Aftercare
We don’t just supply uPVC French doors; we ensure they’re expertly installed by our team of certified professionals in Cosham. Novaseal guarantees a smooth installation process with minimal disruption to your daily operations.
Additionally, our comprehensive aftercare support means we are always available post-installation to assist with any queries or further customisation your space may require. Choose Novaseal for a hassle-free upgrade that promises longevity and reliability.
Unmatched Customisation Options
At Novaseal, our uPVC French doors are customisable to your precise needs, ensuring they integrate seamlessly into your specific architectural style in Cosham. From frame colour and handle choices to glazing options, we provide clients with the flexibility to tailor their doors to both functional requirements and aesthetic preferences.
This personalisation extends to various installation configurations, empowering your project to maintain both symmetry and style integrity.

For over twenty years, Novaseal has supported homeowners in Cosham with high-quality home improvement solutions. Our extensive product range includes uPVC French doors, windows, orangeries and replacement conservatory roofs, giving you plenty of options to upgrade your property. If you’re considering our uPVC French doors, you can also rely on our network of experienced and trusted installers. They ensure every installation is carried out professionally and efficiently, giving you complete confidence from enquiry through to completion.
Whether you need guidance and pricing for one product or a range of products, we’ll find a solution that meets your specifications and budget. Call our team today on 01329 233500 or send us a message.
You can use our online quoting engine to generate a quote for French doors – and for many other products listed on our website.
Our commitment to manufacturing and supplying the best products, while providing the best levels of service, means that customers often seek us out based on our reputation. Contact us for further information or a quote – or use our design tool to create prices for any of our products and as many times as you want.
What styles of uPVC French doors does Novaseal supply?
Novaseal supplies Deceuninck Traditional 2500 profile uPVC French doors perfect for both modern and traditional homes—featuring two full-height sashes with a central “flying mullion” for maximal light and accessibility.
Are uPVC French doors a good option for homes in Cosham?
Yes, uPVC French doors are a popular choice for homes in Cosham thanks to their durability, energy efficiency and stylish design. They allow plenty of natural light into your home while creating a seamless connection between your indoor space and garden or patio.
Can I customise the colour, finish, and hardware of my French doors?
Absolutely. Homeowners in Cosham can choose from a wide range of colours, handles, glazing styles and hardware options to create French doors that match the character of your property, whether modern or traditional.
How secure are Novaseal uPVC French doors?
Modern uPVC French doors are designed with strong security features, including multi-point locking systems and toughened glass. Many doors also meet PAS 24 security standards, and some can be upgraded to Secured by Design accreditation for additional protection and peace of mind.
Do these French doors come with a guarantee?
Yes. All uPVC French doors supplied by Novaseal come with a manufacturer-backed guarantee from Deceuninck, ensuring long-term reliability and customer support.
Which areas does Novaseal supply uPVC French doors to?
Novaseal manufactures and supplies French doors to both trade and residential customers across Cosham, Southampton, Portsmouth, Chichester, West Sussex, New Forest, and throughout Hampshire.