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Windows, doors & conservatories - London, Surrey, Kent & surrounding areas
Osborn Glass, 33/34 High Street,
South Norwood, London, SE25 6HA
Call Osborn Glass, London Double Glazing

Call Osborn Glass, London Double Glazing 020 8683 8406

Home » Doors » French/Patio Door Installer » Composite Patio/French Door Installer

London’s finest composite sliding patio & French doors

But the security features don’t stop there. The glass is augmented by a three-point dead-bolt lock alongside an anti-bump, anti-drill cylinder and cylinder guard. This technology means our French and patio doors can rebuff three of the most common security risks from would-be intruders: bumping, drilling, and snapping.

Composite doors feature a GRP (Glass Reinforced Plastic) resistant layer completed in your chosen finish and colour, as well as a foam core – meaning your composite door will insulate your home while being resistant to the weather.

Highly durable and made to measure

Composite windows, whether made in French or patio style, are highly durable while offering the appearance of real timber. A variety of shades are available including grey, black and white, as well as many RAL colours. However, composite frames are more affordable than timber – and require considerably less maintenance.

Your French or patio doors will be made to measure in our London workshop, then installed by our highly experienced team.


Apeer’s doors are chosen by homeowners who appreciate exceptional craftsmanship, timeless elegance and built-to-last quality. They quickly discover that all this good stuff means plenty more.

All their doors come with a 10-year warranty, are secured and a-rated by design. We’ve been partnered with Apeer for (X) years now and can vouch for the incredible craftsmanship and results they’ve ensured for personal and business clients alike.

John Fredericks

Established in 1970, John Fredericks Plastics have now amassed 50 years of trading with a strong record of innovation and a loyal customer base.

They’re driving force is to “raise the bar” where thermal performance, security and colour options are concerned. And the ranges that we supply, including their Halo PVC-U range, offer unique designs for you.

The John Fredericks product range is branded as the Ultimate CollectionTM. We supply and install the full range in and around South London.

Call Osborn Glass, London Double Glazing 020 8683 8406

Window and door installations in South London and beyond

Since 1966 we’ve been supplying and installing the finest windows, doors, conservatories and more to people just like you. Most of our customers are located in London, Kent and Surrey, but we are happy to supply and install our windows right across the Home Counties, East Anglia and the Southeast. Get in touch with us today with any questions, concerns or queries and we’ll be happy to help.

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