Fitting, replacement and upgrades · BT48
Manual to electric roller door conversion in Derry/Londonderry
If your roller door in Derry/Londonderry is in good condition but heavy to lift, a conversion may suit it. We survey homes in the BT48 area free of charge, check the power supply near the box, and quote any new fused spur separately.
- Guide price
- from £495 inc VAT
- First step
- Free survey
- Covers
- Derry/Londonderry, BT48
Computer-generated image
What should I know about manual to electric roller door conversion in Derry/Londonderry?
- If your door isn't suitable for a motor, we tell you plainly and price a new electric door for comparison.
- A safety edge on the bottom rail, and photocells where the risk assessment calls for them, stop or reverse the door on obstruction.
- The engineer releases the spring tension and converts or replaces the barrel so a tubular motor can drive it, with a control box on the wall.
- Where there's no socket near the box, a qualified electrician fits a fused spur from an existing circuit, priced as a separate line.
How does it work in Derry/Londonderry?
Once you accept, your fitting date is confirmed in writing and depends on installer availability. On the day the motor, controls and safety devices are fitted, tested and handed over with the paperwork.
- STEP 01
Guide price
Answer a few quick questions online and see a price range for the conversion.
- STEP 02
Free survey
We check the curtain, barrel, box, guides and power, and confirm the door can take a motor.
- STEP 03
Written quote
You get the price inc VAT, what is included and the payment stages in writing.
- STEP 04
Fitting day
Motor, controls and safety devices fitted, the door commissioned and the paperwork handed over.
How much does manual to electric roller door conversion cost in Derry/Londonderry?
| Item | Guide price (inc VAT) | Ex VAT |
|---|---|---|
| Manual to electric conversion, fitted and commissioned | £495–£895 | £412.50–£745.83 + VAT |
Guide prices for homes, last reviewed 25 October 2026. Your written quote is the price. See the full price list.
Covering Derry/Londonderry and nearby
We survey and fit roller garage doors across Derry/Londonderry, including BT48, as part of our coverage in County Londonderry.
Rules that apply in Derry/Londonderry
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.
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.
Manual to electric roller door conversion in Derry/Londonderry: questions
What do you check at a survey in BT48?
At a survey in BT48 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 an electric roller door worth it for a garage in Derry/Londonderry?
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 Derry/Londonderry garage so you can compare.
Can I message you a photo of my garage in Derry/Londonderry?
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 Derry/Londonderry. Send them by WhatsApp or mention them in your enquiry, and we will reply in writing.
Can I get a price for Derry/Londonderry 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.
What safety devices are added to a converted door?
A converted door gets a pressure-sensitive safety edge on the bottom rail and, where the risk assessment calls for them, photocells across the opening. These stop or reverse the door if it touches or detects an obstruction. After fitting, the closing force is tested to BS EN 12453, and you receive a Declaration of Conformity along with the rest of the handover paperwork.
Is converting better value than buying a new electric door?
Compare the conversion price with the new-door prices on our prices page. A conversion keeps your existing curtain, barrel, box and guides, so it only makes sense when those parts are in good condition. If the door is worn, or you'd like insulated laths, a new electric door may be better value overall, and your quote can show both.
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Motor replacement in Derry/Londonderry
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See a guide price in four steps, then book a free survey.