MEASURING AND INSTALLATION

Our upvc folding doors are suitable for installation into structural openings constructed from timber, brick, concrete or concrete block to ensure correct operation of the door. The frame head should be fixed to steel, structural timber or a concrete lintel to ensure a firm structural fixing.

Step 1: Measuring the aperture

Recommended 10mm fitting The width and height of your bifold door is the structural opening size less a fitting tolerance.

We recommend a 10mm fitting tolerance is allowed between manufacturing sizes and the smallest width and height dimension(see below).

Use a large spirit level and measure the cross corners of the aperture to ensure the opening is square and true.

Take three width and three height measurements and deduct 10mm from the smallest to determine the actual manufacturing sizes of your door.

Step 2: Track Requirement

Track recess Now you need to decide on the best threshold and track option for your door.

Note that if you are selecting the flush track option the height dimension is to the underside of the sunken track i.e., 45mm below your finished floor level.

Step 3: Door Style

Finally we will need to know which folding door style you require (viewed from the outside) and whether you require the door to fold and slide outwards or inwards. For example this door has 3 panels moving left and one hinged right.

This provides a French door type design for the end two panels with the panel marked M being the Main traffic door.

Step 4: Trickle Ventilators

Most external bifolding doors require trickle ventilators to comply with Building Regulation requirements and where required they will be fitted to a 50mm high frame extender that is fitted to the top of the frame head.