Choosing the right size of bi-fold door for your home

Posted on: 20 March 2017

Bi-fold doors provide an opportunity for homeowners to inject some personality and charm into their interior space. Although they are comparable in build to ordinary doors, in practice bi-fold doors act similar to a removal door. They can be quite wide, meaning they can fit into different gaps. So how do you go about choosing a bi-fold door to match the existing design of your house? In terms of standard sizes, internal folding doors are normally described in millimetres.  The reason being the accuracy needed to make sure there are no troublesome spaces around the perimeter of the door. These spaces can pose security problems and heat-efficiency concerns in exterior doors while they can also pose aesthetic problems in internal folding doors which makes accurate door opening measuring quite important. 

How to measure the ideal door size

If you prefer to carry out the measuring on your own, follow the following tips.

Measure the gap

The initial step is fairly self-explanatory. Take out a tape measure and note down the height and the width of the aperture.  Keep in mind that while performing this, you will need to factor in the small space between the borders of the gap and borders of your bi-folding door. This space is referred to as the fitting tolerance, and will afford you some leeway if the borders of the space are not rather parallel to those of the folding door. When working with millimetres, this unevenness may not be noticeable at a glance right until the door starts to rub onto the frame where it should not. Typically, a fitting tolerance ranging between 10 and 15 millimetres is ideal. 

Measure the angle dimensions

The next step is to measure the angles. Use a large spirit level to do this step. Simply, position it flush to the borders of the gap to make sure it is as square as possible. Additionally, you should also take several measurements of the gap's width and height , in an effort to factor in any sort of unevenness in the door frame. Adopt the smallest measurement when taking the size of the gap. A door that is rather too small is likely to cause far lesser problems compared to one that is too big.

To sum up, size is a key consideration when choosing a bi-folding door. In ensuring your door fits in perfectly in the gap you plan to place it in, follow these tips to measure your door prior to placing your order.