Repairs and aftercare · LL55

Safety edge and photocell repairs in Caernarfon

If the electric roller door on your garage in Caernarfon won't close, or reverses for no reason, the safety edge or photocells may be at fault. We repair and replace them for homes in Gwynedd, with the visit price agreed before we come out.

Request a visit Call 0800 088 6248

Guide price: from £99 inc VAT
First step: Visit price agreed first
Covers: Caernarfon, LL55
Area: Gwynedd

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 Caernarfon?

Photocells either side of the opening stop the door closing while anything is breaking the beam between them.
Photocells can often be added to doors that only have a safety edge, if the control box allows it.
Wiping the photocell lenses and clearing the beam are safe checks to make before you request a visit.
The engineer tests the whole circuit, because a damaged cable or control box fault can look like a failed device.

How does it work in Caernarfon?

We confirm the visit price and the likely part before anything is booked. The visit date depends on engineer availability and is confirmed in writing.

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 Caernarfon?

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 Caernarfon and nearby

Our coverage in Gwynedd includes Caernarfon and the LL55 postcode district, so the same guide prices and written quotes apply here. For reference, Caernarfon sits roughly 8 miles from Bangor.

Looking from a neighbouring town? We also cover Llangefni (8 miles) and Bangor (Gwynedd) (8 miles).

Rules that apply in Caernarfon

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 Wales 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 Caernarfon: questions

Can I message you a photo of my garage in Caernarfon?

Yes. Photos of the opening, the inside of the garage above the door and any existing door help us give a more useful guide price for Caernarfon. Send them by WhatsApp or mention them in your enquiry, and we will reply in writing.

Do you repair roller doors you did not fit in Caernarfon?

Yes. We repair roller garage doors of any make in Caernarfon and across LL55, where parts are available. If a part is no longer made, we tell you what will fit instead, or price a replacement door if that is the better option.

Can I get a price for Caernarfon without anyone visiting?

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

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.

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.

Can I bypass the photocells to get the door shut?

No. Bypassing, bridging or taping over a safety device removes the protection that stops the door closing onto a person, pet or car. If the door won't close, switch it off at the isolator, keep the area clear and request a visit. Tell us if you're concerned about security when you get in touch.