Crittall-style external doors

Why people choose external french doors

External doors have a harder job than internal ones: they keep out rain and draughts, hold heat in and stand up to someone trying to get in. They use thermally broken frames, double or triple glazing and multi-point locks. The look is the same slim grid, a little deeper in section.

Where it works

• Rear extensions opening to a terrace
• Replacing old French doors from a dining room
• Side returns opening onto a courtyard
• Garden rooms and orangeries

How much does it cost?

As a guide, external french doors cost £3,800 to £8,300 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

Glazing	Double glazed as standard, triple to order
Locking	Multi-point locks; laminated glass for security
Threshold	Low or level threshold for step-free access
Opening	French pair, single door, or doors with sidelights
Finish	Matt black, bronze or any RAL colour
Bars	Planted or through bars to suit the look

How we draw it

Styles that suit

• Classic grid
• Georgian bar
• Coloured frames

Homes it suits

• 1930s semis
• Victorian terraces
• Period cottages