Derry/Londonderry at a glance
- Postcode districts
- BT48
- Population
- about 87,153 (GeoNames)
- Council area
- Derry City and Strabane District Council
- Building approval
- Derry City and Strabane District Council building control
- Guide price region
- Northern Ireland (−12% on West Midlands rates)
Why choose EPDM rubber roofing in Derry/Londonderry?
For landlords with property in Derry/Londonderry, EPDM's low upkeep is the main draw: once the outlets are kept clear and the trims are checked once or twice a year, there is little else to do. It also goes down quickly on a small roof, which keeps disruption for tenants to a minimum.
In and around Derry/Londonderry, flat roofs are typically found on lock-up garage blocks on estates, and on terraced streets with flat-roofed rear kitchens and bathrooms. Northern Ireland averages roughly 1,150 mm of rain a year, spread over many wet days, so a roof that sheds water quickly to clear outlets lasts far longer than one that holds puddles.
How much does an EPDM rubber roof cost in Derry/Londonderry?
Guide price in Derry/Londonderry: £1,400–£2,450 for a typical 18 m² garage roof in EPDM, including VAT at Northern Ireland rates. The fixed price comes after a free survey for new and replacement roofs.
| Job | Guide price inc VAT |
|---|---|
| Single garage (18 m²), EPDM rubber | £1,400–£2,450 |
| Extension (20 m²), EPDM, new deck + insulation | £2,450–£4,300 |
| Porch or bay (4 m²), EPDM | £650–£1,100 |
Do I need building regulations approval to replace a roof with EPDM?
Often, yes. In England, Wales and Northern Ireland, re-covering more than half of a flat roof over a heated room usually counts as renovating a thermal element, so the roof should be insulated towards the renovation standard where that is feasible; in Scotland, the council's building standards service decides whether a building warrant is needed.
An unheated detached garage normally falls outside these rules, and a patch repair is treated differently from a full re-cover.
In practice that means a warm roof: insulation above the deck, a vapour control layer beneath it and the EPDM on top. The extra thickness lifts the finished roof, so at survey we check door thresholds, window cills, wall flashings and upstand heights, aiming for an upstand of about 150 mm above the finished surface. Where approval is needed, we deal with building control or building standards for you. The building regulations page and our warm vs cold roof guide go into more detail.
What's included?
- Warm-roof insulation and vapour control layer where required
- EPDM membrane fully bonded, in one sheet where the roof size allows
- Deck check and replacement of soft or rotten boards
- Strip-out of the old covering, with waste taken away
Building control in Northern Ireland
In Northern Ireland, Technical Booklet F1 sets roof insulation at 0.18 W/m²K when a roof over a heated room is renovated or newly built, where that's feasible. The district council's building control should be contacted before work starts, and we prepare the details it asks for. More on the rules.
Which nearby areas do we also cover?
EPDM rubber roofing in Derry/Londonderry: questions
Do you cover Derry/Londonderry?
Yes. Derry/Londonderry is part of our County Londonderry coverage, including postcode districts BT48. Surveys and roofs are carried out by vetted roofing teams working under S&K Property Investments and Improvement Ltd.
Who checks building regulations for a flat roof in Derry/Londonderry?
Where the work needs approval it goes to Derry City and Strabane District Council building control. We tell you at the survey whether your job needs it and deal with the paperwork as part of the quote.
How much does an EPDM rubber roof cost in Derry/Londonderry?
£1,400–£2,450 for a typical 18 m² garage roof in EPDM, at Northern Ireland guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Can you put a green roof on top of EPDM?
Yes. EPDM is often used under sedum, with a protection layer, drainage and growing medium laid on top. The structure must be able to carry the extra weight, which we check before quoting.
Can you walk on an EPDM roof?
Occasionally, for maintenance, yes, but EPDM is not designed as a regular walking surface. Where you need a route to plant or windows, walkway pads can be bonded on, or GRP may be a better fit.