Crittall-style bifold doors

Why people choose bifold doors

Standard bifolds have chunky frames and plain glass. A gridded version keeps the full-width opening but looks at home on a period extension. We usually recommend three to five leaves; more leaves mean more frame when closed, so it is a balance between the open and closed view.

Where it works

• Rear extensions with a wide opening to the garden
• Kitchen-diners opening to a patio
• Garden rooms and summer houses
• Barn conversions with large openings

How much does it cost?

As a guide, bifold doors cost £6,800 to £14,700 for a typical size, fitted and including VAT. Steel-look aluminium sits at the lower end and solid steel at the upper end. Size, bar pattern, glass and doors make the difference. Use the design and price tool for your own size, or read the full cost guide.

Options

Leaves	Three to seven, folding left, right or split
Traffic door	Lead leaf usable as a day-to-day door
Glazing	Double glazed, low-E, toughened
Threshold	Low or flush threshold
Bars	Planted bars on both faces of the glass
Finish	Matt black, bronze or any RAL colour

How we draw it

Styles that suit

• Classic grid
• Slimline minimal
• Industrial warehouse

Homes it suits

• New builds
• Barn conversions
• 1930s semis