Our range of Masterdor composite doors are strong, secure and will add instant appeal and value to your home.

Whether you’re looking for a new front door, or just want to update your existing one with something that is both stylish and durable, BBL Windows can help. We offer an unbeatable range of composite doors in North London - from standard designs, through variations on the theme like stained glass, all the way to bespoke creations made by our expert craftsmen.

The front of your home is always on display. Investing in a high-quality composite door will provide you with a stunning frontispiece that passers-by and visitors are bound to remark on. Our Masterdor composite doors can be customised using our extensive colour palette and woodgrain portfolio, and you’ll be able to further embellish its design by selecting from our range of beautiful handles and letterboxes.

The outstanding designs of our composite doors are capably underscored by the incorporation of innovative and dependable security systems, which work in perfect harmony with insulated foam cores and reinforced PVC-U frames that will keep your home safe, warm and secure for many more years to come. You can depend on the durability and integrity of the materials and fittings in these doors to continue adding value in the long-term.

We can help you choose composite doors that are perfect for your home. With experience of working on home improvement projects throughout your immediate area, we can help you with your refurbishment requirements. Why not look at our range of products – including uPVC sliding sash windows, wooden and aluminium doors – and contact a member of our team for a quote or to ask them a question.



We can tailor composite doors to suit your home improvement needs, resulting in a finished design that’ll perfectly suit the character of your home. In most cases, our Masterdor composite doors can be built to comply with Part M Threshold requirements to provide an entryway that’s accessible to everyone.


Composite doors continue to be popular choices for homeowners throughout the London area, in part because of the unrivalled strength they provide. The Glass Reinforced Plastic (GRP) these doors utilise – when combined with a strong PVC-U subframe – create an impact-resistant and weatherproof product.


Composite doors, when installed at the front of your North London property, will impress anyone who comes to visit. All our Masterdor products can be tailored to ensure a perfect fit; you’ll also be able to select from a wide portfolio of accessories, colouring and finishing options to ensure you’re happy with the final design.


Built using extra-strong fibreglass that can resist high impacts, our composite doors use the latest hardware to prevent unauthorised access. For additional reassurance, it is possible to upgrade your security hardware so that it is Secured by Design compliant, which conforms to the UK Police’s preferred specification.


The insulated high-density foam core inside our composite doors will keep any home in London or the local area warm all year round. It can deliver industry-leading levels of thermal performance that will make your property comfortable all year round which will, concomitantly, reduce your heating costs at the same time.


By investing in one of our Masterdor composite doors, you’ll be investing in a product that’ll add true market value to your home. Although you might not be thinking of moving away from the London area at this point in time, you’ll be able to impress prospective buyers with your beautiful entrance door when the time comes.

Uncompromising Strength

Composite doors continue to be a popular choice for homeowners throughout the London area who are unwilling to compromise on quality. Although the design of each composite door is different, each is built using a compression technique that harnesses the strength of multiple materials, which makes the product sturdy, durable and secure.

Our range of composite doors is manufactured by Masterdor. Built using Glass Reinforced Plastic (GRP), they won’t respond negatively to temperature fluctuations like some other products. This means they won’t expand or warp and will instead continue to add lasting value to your property in North London for many more years to come.

Masterdor manufactures a wide range of different composite doors, so you’ll be presented with an eclectic range of choices when you choose BBL as your installer. Masterdor’s Benchmark portfolio can be built to order using 11 types of colour and woodgrains and a 40mm foam core for enviable levels of thermal performance.


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