Bifold or sliding doors?

Opening width

Bifold doors fold back to open almost the full width. Sliding doors open half or two thirds of the width, depending on the number of tracks.

Glass and frame

Sliding doors have fewer, larger panels and slimmer interlocks, so more glass when closed. Bifolds have a frame line at every panel.

Everyday use

Bifolds can include a traffic door for everyday access. Sliders open with one panel.

Structure

Both need a level, stiff head. Bifolds hang or roll on gear that loads the structure above, so check the lintel.

This guide is general information for trade customers. The person carrying out the work remains responsible for meeting the building regulations and any planning requirements for the specific job.