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Quality Manufacturers & Installers

Quality Manufacturers & Installers

Bi Folding Doors

Our high-performance PVC-U Bi Folding doors in Middlesbrough are designed to give you the advantage through a technically innovative product that has become today’s market’s ‘must have’ product. Bi folding doors meet the demands of contemporary living combined with beauty, function and form.  Both internal and external bi folding doors usually consist of two or more doors which open in a concertina fashion and fold neatly flat when fully open, saving space and bringing the outside in! Bi folding doors allow optimum light and access into a room with minimal obstruction. It allows for a wider opening from a house or conservatory – extending any home so owners can enjoy the benefits of the outdoors and their gardens all year round.


Unlike other door styles, bi folding patio doors completely fold away so there is no intrusion into your living space when doors are left partly open. This results in a seamless and unobstructed view into your outside space, patio or garden. Our bi folding doors are suitable for domestic, commercial & retail applications.

Simple slide and fold operation

Using the recommended gearing ensures that the door sashes operate smoothly and effortlessly giving an unrivalled performance. The door leaves are hinged to a mullion supported by a roller mechanism which slides on track.

Features & Benefits

Chamfered & Sculptured 70mm Systems

Smooth easy glide operation to open

Door panels fold back fully to optimise the opening area

A suitable alternative to In-line patio doors or french doors

Hardware bottom running

Ideal for conservatories or extensions leading into the garden

Internally glazed single leg bead

Chamfered edge feature

No special profile required

Inward opening

white french doors

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Find Out What Celestial Can Do For Your Home…

Celestial Windows is a trading name of Celestial Windows and Conservatories Limited

Authorised and Regulated by the Financial Conduct Authority. We are a Credit Broker and not a Lender. We offer Credit Facilities from one Lender