External steel doors

External steel doors are glazed steel doors built for outside walls, with thermally improved frames, double glazing, weather seals and secure locking. They are most often fitted as French doors or single doors with side lights opening from a kitchen extension onto a garden.

£5,500 – £11,000Guide price for a pair of French doors with side lights, fitted, including VAT

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How external steel doors work

Unlike internal doors, external steel doors need a weathered threshold, drainage and multipoint locking. We design the threshold with your builder so it meets the finished floor inside and the patio outside, with the right step or level access detail.

External doors can be combined with fixed glazed panels and steel windows in one wall, so the whole rear elevation reads as a single steel screen. Frames are galvanised and powder coated to resist the weather.

What you can specify

Thermally improved steel with double-glazed units
Multipoint locking and secure hinges
Weathered threshold, level or stepped
Galvanised then polyester powder coated
French doors, single doors, side lights and top lights
Combine with fixed panels and steel windows
Glazing bars as true divided lights or applied bars

What happens after you get in touch

Tell us about the opening
Send the form, call or chat, or use the guide-price tool for a quick estimate.
Free survey
We measure the opening, check fixings and regulations, and talk through layouts, glass and finish.
Drawings and fixed quote
You get a drawing and a fixed written price naming the material, glass and finish.
Made and fitted
Your screen is fabricated, powder coated and fitted by our team, usually 4 to 6 weeks from sign-off.

Questions about external steel doors

How much do external steel French doors cost?

A pair of external steel French doors with side lights usually costs £5,500 to £11,000 fitted, including VAT. Wider screens and extra fixed panels cost more.

Are external steel doors secure?

Yes. We fit multipoint locking and secure hinges, and steel frames are inherently strong. Ask us about doors tested to recognised security standards if that matters for your insurance.

Can I have a level threshold?

Yes. A level threshold needs drainage and careful detailing with your builder, and we plan it before the floor and patio levels are set.

Do steel doors let in draughts?

Modern external steel doors use weather seals and double glazing, and when fitted correctly they are draught-proof.

Can external doors match my steel windows?

Yes. We design doors, side lights and windows together so the bar lines and colour match across the elevation.

What maintenance do steel doors need?

Keep the drainage slots and threshold clear, wash the frames occasionally and lubricate hinges and locks once a year.