Repairs and aftercare · CM14

Safety edge and photocell repairs in Brentwood

For homes in Brentwood and elsewhere in Essex, we trace safety device faults through the whole circuit, from the device and its cable to the control box. Any parts beyond the ones agreed are quoted before they're fitted.

Request a visit Call 0800 088 6248

Guide price: from £99 inc VAT
First step: Visit price agreed first
Covers: Brentwood, CM14, CM13 and CM15
Area: Essex

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 Brentwood?

Photocells can often be added to doors that only have a safety edge, if the control box allows it.
The engineer tests the whole circuit, because a damaged cable or control box fault can look like a failed device.
Photocells either side of the opening stop the door closing while anything is breaking the beam between them.
Replacement safety edges and photocell pairs have fitted prices, agreed before the visit is booked.

How does it work in Brentwood?

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 Brentwood?

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 Brentwood and nearby

Brentwood is within the area we cover in Essex. Homes in CM14, CM13 and CM15 get the same survey, quote and fitting process as everywhere else we work. Brentwood is about 11 miles from Chelmsford.

Looking from a neighbouring town? We also cover Billericay (5 miles) and Hornchurch (6 miles).

Rules that apply in Brentwood

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 Brentwood: questions

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.

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

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 Brentwood. Send them by WhatsApp or mention them in your enquiry, and we will reply in writing.

Do you charge more for Brentwood than other towns in Essex?

No. Guide prices are the same for Brentwood as for anywhere else we cover in Essex. 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.

Can I get a price for Brentwood 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.

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.