Doors
Aluminium bifold doors
Fold back a whole wall and let the garden in. Slim aluminium panels that glide on a hidden track and stack neatly to one side.
Doors
Inside and outside, joined up
Bifold doors are a run of glazed panels hinged together and hung from a track. Slide the handle and they concertina to one side, or both, opening up to ninety per cent of the aperture. Closed, they are a wall of glass. Open, the kitchen and the patio become one space.
We supply and install thermally broken aluminium bifolds, including the Sheerline Prestige system, from two to seven panels with each panel up to 1200mm wide. Aluminium is the right material for the job: stiff enough to keep frames slim, stable enough to keep panels running true year after year.
Two to seven panels
Configured to fold left, right or split, opening inwards or outwards.
A door for every day
A traffic door lets you pop outside without folding the whole set.
Warm in winter
Thermally broken frames and toughened, argon-filled double glazing.
Locked along the run
Multi-point locking on the lead door with shootbolts on every folding panel.
Planning the layout
The first decision is how many panels and which way they stack. An odd number gives you a traffic door, a single leaf at one end that opens like an ordinary door. Even numbers can split in the middle like French doors. We will sketch the options against your room so that folded panels end up where they are least in the way.
Then there is the threshold. A weathered threshold has a small upstand that gives the best protection on exposed walls. A low threshold reduces the step to almost nothing for a seamless run of floor from inside to out.
- Open in or open out
- Left, right or centre split
- Weathered or low threshold
- Integral blinds and solar-control glass available
Colour, inside and out
Our core colours are Anthracite Grey (RAL 7016), Jet Black (RAL 9005) and White (RAL 9910), with other RAL colours available to order. Dual colour puts a dark, architectural finish outside and white indoors, so the frames disappear into the room.
Match them with aluminium windows or a roof lantern in the same finish and the whole extension reads as one piece of design.
Specification
The details, in full
Typical specification. We confirm the exact details for your order on the quotation.
| System | Thermally broken aluminium, including Sheerline Prestige |
|---|---|
| Panels | Two to seven; up to 1200mm per panel |
| Glazing | Clear toughened, argon-filled double glazing |
| Colours | Anthracite Grey RAL 7016, Jet Black RAL 9005, White RAL 9910; other RAL colours to order; dual colour available |
| Thresholds | Weathered or low threshold |
| Configuration | Open in or out; traffic door on odd-panel sets |
| Typical manufacture | 15 to 25 working days |
| Guarantee | 10 years on frames, 5 years on sealed units, 2 years on hardware |
Questions
Good things to ask
Straight answers to the questions we hear most about this product.
How many panels do I need?
As a guide, panels work best between about 700mm and 1200mm wide. A 3 metre opening usually takes three or four panels; 4.8 metres takes five or six. Fewer, wider panels give more glass when closed. More, narrower panels take up less depth when folded.
Bifold or sliding doors?
Bifolds open almost the whole aperture, which is wonderful in summer. Sliding doors have larger panes and slimmer uprights, so they give a better view when closed, which in the North West is most of the year. Think about how often the doors will be fully open.
Are bifold doors secure?
Yes. The lead door has a multi-point lock and each folding panel is secured with shootbolts into the track. The glass is toughened and internally beaded.
Do I need planning permission?
Replacing existing doors or windows with bifolds does not usually need planning permission. Forming a new or wider opening is structural work that needs a suitable lintel or steel and Building Regulations approval. We can work alongside your builder.
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Get a price for aluminium bifold doors
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