Roller door types · AL5

Steel roller garage doors in Harpenden

Steel laths give a heavier, stiffer curtain, and we can fit steel roller doors in Harpenden and anywhere in AL5. A free survey checks the lintel, reveals and power supply, because a heavier door needs a sound opening to fix to.

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Guide price: from £1,345 inc VAT
First step: Free survey
Covers: Harpenden, AL5 and AL3
Area: Hertfordshire

Galvanised steel roller garage door on a flat-roofed brick garage beside a house

Computer-generated image

What should I know about steel roller garage doors in Harpenden?

Look at the brick or blockwork on each side of the opening, as the guide rails for a steel door need solid reveals to fix to.
Think about whether battery backup is worth adding, so the door keeps working for a limited number of cycles when the power is off.
Measure the width of your opening, because our steel price list covers singles up to 2.4 m and doubles of 3.0 to 4.0 m, and other widths are priced on survey.
Compare steel with insulated aluminium if a warmer garage is a priority, as it's the foam-filled lath that reduces heat loss.

How does it work in Harpenden?

Once you accept, the fitting date is confirmed in writing, depending on installer availability. If a new spur is needed, it's shown in the quote and fitted by a qualified electrician.

STEP 01
Guide price
Answer four quick questions online and see a price range for your opening.
STEP 02
Free survey
We measure the opening, headroom, side room, lintel and power, and talk through options.
STEP 03
Written quote
You get the price inc VAT, what is included and the payment stages in writing.
STEP 04
Fitting day
Old door out, new door in, commissioned and handed over with the paperwork.

How much do steel roller garage doors cost in Harpenden?

Item	Guide price (inc VAT)	Ex VAT
Steel electric roller door, single up to 2.4 m	£1,345–£1,995	£1,120.83–£1,662.50 + VAT
Steel electric roller door, double 3.0–4.0 m	£2,095–£3,095	£1,745.83–£2,579.17 + VAT

Guide prices for homes, last reviewed 25 October 2026. Your written quote is the price. See the full price list.

Covering Harpenden and nearby

Harpenden is within the area we cover in Hertfordshire. Homes in AL5 and AL3 get the same survey, quote and fitting process as everywhere else we work. For reference, Harpenden sits roughly 12 miles from Hertford.

Other places close to Harpenden that we cover include St Albans, Luton and Hemel Hempstead.

Rules that apply in Harpenden

Planning

Replacing a garage door is not usually development that needs planning permission. Check first if your home is listed (listed building consent covers works that affect its character), sits in a conservation area with an Article 4 direction, or is on an estate where planning conditions or covenants control garage doors.

Structural work

Widening the opening, removing a central pier or fitting a new lintel is structural work that needs Building Regulations approval from building control before it starts.

Steel roller garage doors in Harpenden: questions

What do you check at a survey in AL5?

At a survey in AL5 we measure the width and height of the opening, the headroom above it for the roller box, the side room for the guide rails and the floor level. We also look at the lintel and where power can come from for an electric door.

Is the survey in Harpenden really free?

Yes. For a new door, a replacement or a conversion, the survey is free and there is no obligation to go ahead. We measure the opening, check the lintel, headroom, side room and power, and send a written quote afterwards.

Do I need permission for a new roller garage door in Harpenden?

Replacing a garage door is not usually development that needs planning permission in England, and widening the opening needs building control approval. If you live in a listed building, a conservation area or on an estate with covenants or planning conditions, check before ordering.

Is an electric roller door worth it for a garage in Harpenden?

That depends on how often you use the garage. An electric door opens from the car with a remote and has safety devices fitted, while a manual door costs less and suits occasional use. We price both for your Harpenden garage so you can compare.

Can I have a manual steel roller door?

The steel doors in our price list are electric, because a steel curtain is heavier than an aluminium one and the tubular motor does the lifting. If you want a hand-operated door, our manual doors use single-skin aluminium laths. Where there's no socket near the box, a qualified electrician can fit a fused spur from an existing circuit, shown as a separate line in your quote; a new supply to a garage with no power is priced on survey.

How do I open a steel roller door in a power cut?

Use the manual override, normally an internal crank or winding handle that turns the barrel by hand. Keep it somewhere you can find quickly. A steel curtain is heavy, so take your time and wind steadily. If you'd rather not crank it, battery backup keeps the door running for a limited number of cycles while the power is off.