Repairs and aftercare

Safety edge and photocell repairs in County Londonderry

Safety edge and photocell repairs in County Londonderry: we cover 4 towns here, including Derry/Londonderry, Coleraine and Limavady, with the same guide prices and written quotes everywhere. Guide prices are the same in every town.

Request a visit Call 0800 088 6248

Guide price: from £99 inc VAT
First step: Visit price agreed first
Covers: County Londonderry
Towns listed: 4

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 County Londonderry?

The engineer tests the whole circuit, because a damaged cable or control box fault can look like a failed device.
After a repair, the door is tested to check it stops or reverses on obstruction before it's handed back.
Replacement safety edges and photocell pairs have fitted prices, agreed before the visit is booked.
Wiping the photocell lenses and clearing the beam are safe checks to make before you request a visit.

Towns we cover in County Londonderry

How does it work?

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.

Guide prices for safety edge and photocell repairs

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.

Rules that apply in Northern Ireland

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 CE marking, which is the marking that applies to machinery placed on the market in Northern Ireland.

Electrics

An electric door needs a power supply near the roller box. Part P does not apply in Northern Ireland, but electrical work must still meet BS 7671 and be carried out by a qualified electrician.

Questions about safety edge and photocell repairs in County Londonderry

Which towns do you cover in County Londonderry?

We cover County Londonderry, including Derry/Londonderry, Coleraine, Limavady and Magherafelt. Every town has its own page with local details, and you can start a guide price for any postcode in County Londonderry online.

How do I book a visit in County Londonderry?

Tell us what the door is doing using the form on this page, by phone or on WhatsApp. We confirm the visit price before anyone comes out, then confirm the date in writing.

Can I get a price without anyone visiting?

Yes. The guide price tool takes four steps and gives a range for your opening and door type, or the visit price for a repair. It is a guide, not a quote: the written quote comes after the survey or once the visit price is agreed.

Can photocells be added to a door that doesn't have them?

Often, if the control box has a connection for them. Some older systems need extra wiring or a replacement control box first. Tell us what's on the control box label and we'll confirm whether photocells can be added, and the price, before booking. Our battery backup and safety upgrades page covers adding devices.

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.