Repairs and aftercare · SG13

Safety edge and photocell repairs in Hertford

A split safety edge or knocked photocell on your roller door in Hertford is worth fixing before the door is used again, because those devices stop it closing onto people, pets and cars. Homes in the SG13 area get the price agreed before booking.

Request a visit Call 0800 088 6248

Guide price: from £99 inc VAT
First step: Visit price agreed first
Covers: Hertford, SG13, SG14 and SG12
Area: Hertfordshire

Rubber safety edge on a roller door bottom rail and a photocell sensor on the guide rail

Computer-generated image

What should I know about safety edge and photocell repairs in Hertford?

A pressure-sensitive safety edge on the bottom rail stops or reverses the door when it touches something while closing.
After a repair, the door is tested to check it stops or reverses on obstruction before it's handed back.
The engineer tests the whole circuit, because a damaged cable or control box fault can look like a failed device.
Never tape over, bridge or bypass a safety device to make an electric roller door close.

How does it work in Hertford?

Tell us what the roller door at your home in Hertford is doing and what you've checked. Photos of the bottom rail, photocells and control box label help.

STEP 01
Tell us about the door
Describe the door and what you need, with a photo or video if you can.
STEP 02
Agree the visit price
We confirm the visit price before anyone comes out.
STEP 03
Visit
The engineer finds the cause and makes the door safe where possible.
STEP 04
Parts quoted first
Any parts are quoted before they are fitted, so you decide.

How much do safety edge and photocell repairs cost in Hertford?

Item	Guide price (inc VAT)	Ex VAT
Photocell pair replacement, fitted	£99–£189	£82.50–£157.50 + VAT
Safety edge replacement, fitted	£159–£295	£132.50–£245.83 + VAT

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

Covering Hertford and nearby

Hertford is within the area we cover in Hertfordshire. Homes in SG13, SG14 and SG12 get the same survey, quote and fitting process as everywhere else we work.

Looking from a neighbouring town? We also cover Hoddesdon (4 miles) and Welwyn Garden City (6 miles).

Rules that apply in Hertford

Powered door safety

Every powered door we fit is commissioned with force testing to BS EN 12453 and handed over with a Declaration of Conformity and UKCA or CE marking, as the Supply of Machinery (Safety) Regulations 2008 require.

Electrics

An electric door needs a power supply near the roller box. Electrical work must meet BS 7671, and in England some domestic electrical work is notifiable under Part P, so it is done by a registered competent person or signed off by building control.

Safety edge and photocell repairs in Hertford: questions

What should I do while I wait for a visit in Hertford?

If the door is stuck part-open, keep people, pets and cars clear of it and switch off the power at the isolator if it is safe to reach. Do not force the curtain or open the roller box. Your Hertford visit date is confirmed in writing.

Do you cover Hertford?

Yes. Hertford is part of the area we cover in Hertfordshire, including SG13, SG14 and SG12. Get a guide price online, then we confirm a survey or visit date in writing. Dates depend on installer and engineer availability.

Will you fix the door on the first visit?

A fault can sometimes be found and put right on the first visit, but we never promise it. If a part needs ordering, we quote for it first, make the door safe where we can, and confirm the return date in writing.

Do you charge more for Hertford than other towns in Hertfordshire?

No. Guide prices are the same for Hertford as for anywhere else we cover in Hertfordshire. The written quote reflects your opening and the door you choose, not your postcode, apart from islands and remote areas where any travel cost is shown in advance.

Why does my roller door reverse when nothing is in the way?

A door that reverses on its own while closing is often reacting to a safety device that thinks there's an obstruction. Dirty or misaligned photocells, a damaged safety edge, a loose cable or limits that have drifted can all cause it. Clean the photocell lenses and check the beam is clear, then request a visit if it continues.

How do I test my safety edge and photocells?

Follow the manufacturer's instructions for your door. In general, the test checks that the door stops or reverses when the safety edge meets an obstruction while closing, and that the door won't close while the photocell beam is broken. Keep people and pets clear while testing, and repeat the test monthly.