Bifold Door Buying Guide

Bifold doors now form part of almost all new develop residence extensions because of their ability to open up big unobstructed openings permitting the new living space to seamlessly merge together with the garden.

The massive growth in demand for these folding sliding doors inside the UK in current years has led to a substantial increase in the quantity and kind of distinct door systems now out there towards the consumer. They are now extensively accessible inside a option of components and finishes with the three most well-known becoming thermally broken aluminium, upvc and hardwood.

Picking the ideal Bifold doors for your project is definitely an important decision and a single that should not be taken purely based on price alone. Your spending budget will naturally have an influence on your purchasing selection but you’ll find other critical elements that require severe consideration to make sure you are not disappointed with your purchase. Here would be the top 5 points that happen to be regarded by quite a few as the most crucial study when considering a bifold door purchase:

1. THERMAL Efficiency

Considering the fact that most bifold door installations might be subject to compliance with constructing regulations it’s significant to verify that the folding door you’re about to purchase will meet your neighborhood authority’s interpretation of present constructing regulations when it comes to all round U-value performance. This calculation is primarily based around the specification of the double glazing collectively with the profile design and dimensions to ascertain the insulation benefits in the door measured in U-values together with the lower the worth the far better the insulation achieved. The minimum acceptable under current constructing regulations for replacement doors is a 1.8 U-value but some neighborhood authorities will insist on decrease values specifically for new construct extensions.


Another important consideration needs to be the sight line or width of door profiles between each and every panel with the folding sliding door as this will likely affect the visible glass area out there when the door is within the closed position. Most bifold doors are designed with devoted profiles to minimise these sightlines as a lot as you possibly can but some timber and lots of upvc folding doors use wide, chunky profiles that create very broad sight lines in excess of 200mm wide that may eventually spoil your view.

3. Safety

Most folding doors will feature a higher security locking system but several nonetheless use face fixed or flag hinges that could pose a probable security concern and allow the hinges to be removed from the outside when the door is closed. Some upvc bifold doors may well also use an exposed gearing technique that is accessible from the outside in the door when the door is closed which also can pose a probable safety threat. You may eliminate these possible safety difficulties by ensuring you decide on a folding door that has fully concealed gearing and hinge fixings.


While a flush threshold would be the most preferred option in particular for internal bifold doors this might not always be practical in some instances and a traditional raised threshold will must be employed. It is vital to note that the height of these can differ considerably with some upvc bifold door thresholds exceeding 125mm. Such a high ‘step-over’ threshold may produce an accessibility concern for young children and the older generation. The latest bifold door styles offer raised thresholds made to minimise the trip hazard with some providing thresholds as low as 50mm high.


Some Bifold doors are hung from the top to let for a minimal threshold at floor level but with each of the weight of the door becoming supported in the leading a substantial upgrade of your lintel is ordinarily required for strength and stability. Bottom rolling folding doors are a expense effective and well-known alternative since the weight with the door is carried at ground level as opposed to suspended in the lintel.

Irrespective of whether you determine on an aluminium, upvc or hardwood bifold door it is a important buy for the project and one particular that ought to be cautiously viewed as to ensure the incredibly very best value for your cash. Acquiring a low-priced bifold door may prove a disappointment unless you check carefully that the door you might be purchasing will meet your needs and expectations prior to you order.


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