Roller door types · BT48

Insulated roller garage doors in Derry/Londonderry

For a warmer, quieter garage in Derry/Londonderry, an insulated roller door with foam-filled aluminium laths is the natural step up from single-skin. We cover the whole BT48 postcode area and confirm the lath size and box position at a free survey.

Get my guide price Call 0800 088 6248

Guide price: from £1,495 inc VAT
First step: Free survey
Covers: Derry/Londonderry, BT48
Area: County Londonderry

Close-up of rain-beaded insulated anthracite roller door laths beside the guide rail and brush seal

Computer-generated image

What should I know about insulated roller garage doors in Derry/Londonderry?

Check whether the floor dips or rises across the opening, because an uneven floor can leave a gap under the bottom rail that lets draughts in.
If the garage is integral, consider how much cold air and noise currently reaches the rooms that share a wall or ceiling with it.
Wider openings usually suit 77 mm laths for rigidity, so expect the lath size to be confirmed once the width has been measured at survey.
Decide whether you want extras such as battery backup or a wireless keypad, so they can be included in the written quote rather than added later.

How does it work in Derry/Londonderry?

A free survey at your home in Derry/Londonderry then confirms the lath size, box position and power supply. You get a written quote with the exact door, extras and total price, including VAT.

STEP 01
Guide price
Answer four quick questions online and see a price range for your opening.
STEP 02
Free survey
We measure the opening, headroom, side room, lintel and power, and talk through options.
STEP 03
Written quote
You get the price inc VAT, what is included and the payment stages in writing.
STEP 04
Fitting day
Old door out, new door in, commissioned and handed over with the paperwork.

How much do insulated roller garage doors cost in Derry/Londonderry?

Item	Guide price (inc VAT)	Ex VAT
Insulated electric roller door, single up to 2.4 m	£1,495–£2,295	£1,245.83–£1,912.50 + VAT
Insulated electric roller door, wide single 2.4–3.0 m	£1,795–£2,795	£1,495.83–£2,329.17 + VAT
Insulated electric roller door, double 3.0–4.0 m	£2,195–£3,295	£1,829.17–£2,745.83 + VAT
Insulated electric roller door, wide double 4.0–5.5 m	£2,595–£3,995	£2,162.50–£3,329.17 + 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

If your garage is in Derry/Londonderry (BT48), you can get a guide price online now, and we confirm any survey or visit date in writing.

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.

Structural work

Structural alterations, such as widening the opening or fitting a new lintel, need building control approval from your council under the Building Regulations (Northern Ireland) 2012 before work starts.

Insulated roller garage doors in Derry/Londonderry: questions

How much do insulated roller garage doors cost in Derry/Londonderry?

Our guide price for insulated roller garage doors is from £1,495 inc VAT. The figure for your garage depends on the opening size, the door specification and any extras, and is confirmed in a written quote after a free survey. The guide prices are the same in Derry/Londonderry as elsewhere we cover.

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 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.

Do you charge more for Derry/Londonderry than other towns in County Londonderry?

No. Guide prices are the same for Derry/Londonderry as for anywhere else we cover in County Londonderry. 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.

Is an insulated door worth it for a detached garage?

It depends on how you use the garage. If it's only for parking or storing tools, single-skin laths may be enough. If you work out there, store anything that dislikes the cold, or want it quieter, insulated laths are worth the extra cost. Remember the walls, roof and floor also let heat out, so the door is only part of the picture.

Can insulation be added to my existing roller door?

Not in a practical way. The foam sits between the two aluminium skins of each lath when it's made, so a single-skin curtain can't simply be filled or lined. Getting insulated laths means a new curtain, and because the box and barrel need to suit the larger roll, that normally means a new door, which we can quote as a replacement.