There are many benefits of using London bi-folding doors when finishing, renovating or remodelling an interior space. They can come in any design to fit a particular design style. A bi-fold door is a set of panels that has two or more hinged sections, usually folding in pairs. The doors can be opened from either side for one pair, or fold both sides for several pairs.
Larger bi-fold door systems in London are used as room dividers, barn doors, and even aeroplane hangar doors. They are usually hung from overhead tracks and suspended by rollers or casters. The innermost door panel has a knob or a door-pull which allows the user to fold the door panels together.
Bi-fold doors eliminate the problem of supporting a large overhead door in a commercial garage or aeroplane hangar with a low threshold options that offer unrestricted floor space. These doors can be hung in a series, making them ideal as room dividers. The same tracking used for sliding door systems can also be incorporated into bi-fold doors. The design of a bi-fold door in London allows the panels to fold on themselves without changing the orientation of the suspended casters or rollers. Because the tracks and casters receive some unusual stresses from the opening and closing action, bigger and heavier bi-fold doors are usually equipped with pivot floor tracks to prevent the panels from swinging and to add structural stability.
There are many different types of bi-folding doors available in London currently on the market. The wood used to be the most widely used material, but now doors are also made of metal or glass. Some of them are available with a raised panel, flat panel, v-groove panel or as glass French doors.
Bifold Door Sizes & Fitting
As with most reasonably large property expenditure, a bifold door normally a one-off purchase. The technical detail is likely to leave the average consumer confused, so what is involved in choosing a bifold door that will allow you to enjoy your home more, will be versatile, and will look and function beautifully for many, many years?
Below are some tips on what to consider, but we suggest you look for a bi folding door specialist to supply and fit your door who will perform a survey before building your door and give you any advice you need. Should you decide to use your builder or a professional fitter, they should take responsibility for the precise measurements and ancillary requirements for the door. In unskilled hands, these doors are likely to produce problems so an experienced installer should be used. However, you may well prefer to perform your own research and we hope that these tips prove useful.
• Which material - aluminium, PVCu or timber products
• Configuration options - how should it fold and open
• Size and number of panels
• Glazing - for thermal, privacy and appearance
• Threshold Options - for accessibility and weatherproofing
• Trickle Vents - for ventilation and to meet building standards
• Gearing - for smooth operation and high performance
• Cill and Drainage - are they necessary for your project
Aluminium is a fabulous, highly durable, low maintenance material. It is available in a vast range of colours, wood effect and metallic finishes. It needs only to be washed occasionally to keep it clean and looking new.
Aluminium is less expensive than timber options, but some properties - especially period and listed properties where existing fenestration is traditional - may not be entirely suited to aluminium or even meet planning guidelines.
PVCu is the least expensive option. It is available in a range of colours and finishes, but responsible bifold door manufacturers would not recommend anything other than a standard white PVCu finish. This is because colour and finishes can cause instability to this material when in conjunction with the movement of the bifolding door.
PVCu is easy to maintain, does not last as long as aluminium, but will still look beautiful after several years. Good quality, modern PVCu can complement white timber windows and doors very well.
Timber bifolding doors can be built in hardwood or in laminated (engineered) timber. Engineered timber is designed to outlast other timber products as it is formed from layer upon layer of hardwood, preventing water from becoming trapped within the wood where it can causing twisting and shrinking and eventual damage. The fold and slide nature of bifolding doors means that they are highly sensitive to any alteration of shape and weight distribution and this will result iin stress on the gearing, poor performance and eventual breakdown.
In South facing, exposed or coastal areas laminated timber is recommended over hardwood for this reason. All timber bifold doors can be factory painted in an infinite range of colours and this should assure a guarantee of long durability of the finish and low maintenance.
A flexible supplier of bespoke doors will be able to offer all possible configuration options to suit your aperture, but there will be technical limitations. Each panel has to be attached to the track, which affects which doors can be free one side to open. Options can include a single opening door at either end or anywhere it makes physical sense along the track. It is possible to use two of the doors as french doors in the conventional way whilst the remainder of the panels are closed as long as there are enough panels.
Size and Number of Bifolding Panels
Panel size is dictated by material and is essentially weight related. Once glazed, these doors are very heavy and too much weight can affect their performance. If narrow, the panels will become too bulky to fold and slide and will be cumbersome when stacked away.
The standard maximum width of an aluminium bifold door is 1000mm and there are height restrictions which, if exceeded, may cause issues and customers will be expected to sign a disclaimer. PVCu may be lighter than aluminium, but because it is not as strong, a good bifolding door company will ensure that all of its PVCu bifolds are reinforced with steel, thus making it heavier.
The number of panels a door comprises should be flexible if custom built. Generally, however, fewer panels in a door makes for better visibility. In addition, the price per square metre increases in line with the number of panels owing to the additional material, engineering, hinges, security and thermal requirements.
Gearing quality is critical to door durability and performance. Unfortunately, it is also the feature you may not be able to qualify yourself. For this reason, if you do not know of a bifold door specialist, it is recommended that you use either a reputable company experienced in supplying bifold doors or a reliable builder or architect to specify the door. Choosing a product on price frequently leads to disappointment.
All bifold doors are most weatherproof when incorporating a normal threshold - no matter what manufacturers say to the contrary. By its very nature, a low threshold bi-folding door is subject to some water and draught ingres in severe conditions. Low thresholds are fabulous for disabled access and level access to, for example, a garden, but consider your property's aspect, your geographical location and local weather patterns before making a decision. And as an extra precaution, lay water resistant flooring immediately inside a low threshold.
Glazing should be 28mm K glass or equivalent and is always double glazed. It can be obscured if required, self cleaning and have heat resistant film applied if in direct sunlight. Increasingly popular are internal blinds which are very attractive, but which are new on the market and have no history on which to stake their durability.
Trickle vents, or night vents, are built into the frame to provide exchange of air and to prevent condensation. These are compulsory for new builds and may be appropriate for your installation for other reasons. Any bifold door specialist can advise, but you should check with your builder or installer.
Cill and Drainage
You may or may not need a cill and/or drainage which will be specified at the survey. Drainage is via a narrow channel which draws moisture away from the door and whether drainage is required will be depend upon internal and external levels and other factors.
How to Buy a Bifold Door
Bifold doors now form part of almost all new build home extensions due to their ability to open up large unobstructed openings allowing the new living space to seamlessly merge with the garden.
The enormous growth in demand for these folding sliding doors in the UK in recent years has led to a substantial increase in the number and type of different door systems now available to the consumer. They are now widely available in a choice of materials and finishes with the three most popular being thermally broken aluminium, upvc and hardwood.
Choosing the right bifold door for your project is an important decision and one that should not be taken purely based on cost alone. Your budget will naturally have an influence on your buying decision but there are other important factors that need serious consideration to ensure you are not disappointed with your purchase. Here are the top five points that are regarded by many as the most essential research when considering a bifold door purchase:
1. THERMAL PERFORMANCE
Since most bifold door installations will be subject to compliance with building regulations it is important to check that the folding door you are about to buy will meet your local authority's interpretation of current building regulations in terms of overall U-value performance. This calculation is based on the specification of the double glazing together with the profile design and dimensions to determine the insulation benefits of the door measured in U-values with the lower the value the better the insulation achieved. The minimum acceptable under current building regulations for replacement doors is a 1.8 U-value but some local authorities will insist on lower values particularly for new build extensions.
2. GLASS SIGHT LINES
Another important consideration should be the sight line or width of door profiles between each panel of the folding sliding door as this will affect the visible glass area available when the door is in the closed position. Most bifold doors are designed with dedicated profiles to minimise these sightlines as much as possible but some timber and many upvc folding doors use wide, chunky profiles that produce very broad sight lines in excess of 200mm wide that will ultimately spoil your view.
Most folding doors will feature a high security locking system but many still use face fixed or flag hinges that can pose a possible security issue and allow the hinges to be removed from the outside when the door is closed. Some upvc bifold doors may also use an exposed gearing system that is accessible from the outside of the door when the door is closed which can also pose a possible security threat. You can eliminate these potential security problems by ensuring you choose a folding door that has fully concealed gearing and hinge fixings.
Although a flush threshold is the most popular option especially for internal bifold doors this may not always be practical in some cases and a conventional raised threshold will need to be used. It is important to note that the height of these can vary considerably with some upvc bifold door thresholds exceeding 125mm. Such a high 'step-over' threshold may create an accessibility issue for children and the older generation. The latest bifold door designs offer raised thresholds designed to minimise the trip hazard with some offering thresholds as low as 50mm high.
5. TOP HUNG OR BOTTOM ROLLING
Some bifold doors are hung from the top to allow for a minimal threshold at floor level but with all the weight of the door being supported from the top a substantial upgrade of the lintel is normally required for strength and stability. Bottom rolling folding doors are a cost effective and popular alternative since the weight of the door is carried at ground level rather than suspended from the lintel.
Whether you decide on an aluminium, upvc or hardwood bifold door it is a major purchase for your project and one that should be carefully considered to ensure the very best value for your money. Buying a cheap bifold door may prove a disappointment unless you check carefully that the door you are buying will meet your needs and expectations before you order.
- E2 Bethnal Green bifold door
- E3 Bow bi folding doors companies
- E4 Chingford bi folding doors companies
- E5 Clapton bi fold doors shop
- E6 East Ham bifold doors companies
- E7 Forest Gate express bi folding doors
- E8 Hackney bi folding doors
- E9 Homerton express bi folding doors
- E10 Leyton bi fold doors supplier
- E11 Leytonstone schuco bifold doors
- E12 Manor Park bi folding doors
- E13 Plaistow aluminium bifolding doors
- E14 Poplar bi folding doors
- E15 Stratford bifold doors companies
- E16 North Woolwich origin bi folding doors
- E16 Victoria Docks bi folding doors
- E17 Walthamstow express bi folding doors
- E18 Woodford and South Woodford bifold doors companies
- E20 Olympic Park bifold doors company
- EC2 Bishopsgate bifold door
- EC3 Fenchurch Street express bifold doors
- EC4 Fleet Street bi fold doors shop
- N2 East Finchley bi fold doors
- N3 Finchley bi fold doors supplier
- N4 Finsbury Park bi fold doors supplier
- N5 Highbury bi folding doors
- N6 Highgate bi folding doors
- N7 Holloway bi folding doors
- N8 Hornsey bi folding doors
- N9 Lower Edmonton express bifold doors
- N10 Muswell Hill bifold doors shop
- N11 New Southgate bi fold doors
- N12 North Finchley bi fold doors supplier
- N13 Palmers Green bi fold doors supplier
- N14 Southgate bifold doors shop
- N15 South Tottenham bi folding doors company
- N16 Stoke Newington bi fold doors shop
- N17 Tottenham bi folding doors companies
- N18 Upper Edmonton bifold doors companies
- N19 Upper Holloway bifold doors company
- N20 Whetstone origin bifold doors
- N21 Winchmore Hill bi folding doors supplier
- N22 Wood Green bi folding doors
- NW2 Cricklewood bi folding doors
- NW3 Hampstead bi fold doors
- NW4 Hendon bi fold doors
- NW5 Kentish Town bi folding doors
- NW6 Kilburn bifold doors supplier
- NW7 Mill Hill schuco bifold doors
- NW8 St John’s Wood bi folding doors company
- NW9 The Hyde bi folding doors company
- NW10 Willesden bi fold doors supplier
- NW11 Golders Green express bi folding doors
- SE2 Abbey Wood aluminium bifolding doors
- SE3 Blackheath bi fold doors companies
- SE4 Brockley express bi folding doors
- SE5 Camberwell origin bi fold doors
- SE6 Catford origin bi folding doors
- SE7 Charlton bi folding doors
- SE8 Deptford bifold doors supplier
- SE9 Eltham bifold doors companies
- SE10 Greenwich bifold doors companies
- SE11 Kennington bifold doors companies
- SE12 Lee aluminium bifold doors
- SE13 Lewisham bi fold doors shop
- SE14 New Cross bifold doors companies
- SE15 Peckham bi fold doors
- SE16 Rotherhithe bi fold doors companies
- SE17 Walworth bi folding doors
- SE18 Woolwich express bi fold doors
- SE19 Norwood bifold door
- SE20 Anerley bifold doors company
- SE21 Dulwich bi folding doors
- SE22 East Dulwich aluminium bifold doors
- SE23 Forest Hill bi fold doors shop
- SE24 Herne Hill express bifold doors
- SE25 South Norwood origin bi folding doors
- SE26 Sydenham bi folding doors
- SE27 West Norwood aluminium bifolding doors
- SE28 Thamesmead bi fold doors shop
- SW2 Brixton origin bifold doors
- SW3 Chelsea schuco bi fold doors
- SW4 Clapham origin bi folding doors
- SW5 Earls Court schuco bi folding doors
- SW6 Fulham bifold doors
- SW7 South Kensington bifold door
- SW8 South Lambeth express bi fold doors
- SW9 Stockwell bifold doors
- SW10 West Brompton express bifold doors
- SW12 Balham bi fold doors shop
- SW13 Barnes bi folding doors
- SW14 Mortlake bifold doors companies
- SW15 Putney bifold doors company
- SW16 Streatham bi fold doors supplier
- SW17 Tooting bi folding doors supplier
- SW18 Wandsworth bi fold doors companies
- SW19 Wimbledon bi fold doors shop
- SW20 West Wimbledon bi fold doors shop
- W3 Acton bi fold doors supplier
- W4 Chiswick bi folding doors
- W5 Ealing bi folding doors supplier
- W6 Hammersmith bi fold doors
- W7 Hanwell bifold doors supplier
- W8 Kensington bi fold doors shop
- W9 Maida Hill bi fold doors
- W10 North Kensington bifold door
- W11 Notting Hill bi folding doors
- W12 Shepherds Bush express bifold doors
- W13 West Ealing origin bifold doors
- W14 West Kensington bi fold doors supplier