Looking for a roofer across Derry & Strabane? NI Trades is an introduction service that matches Northern Ireland homeowners with roofers who have passed our application-stage checks. Derry & Strabane is one of 11 NI council districts; tradespeople choose the councils they cover, so picking a council means you reach every roofer who works anywhere in this district. Post your job in two minutes - only profiles of roofers interested in your specific job are revealed, and your contact details stay private until you choose who to talk to. Insurance, credentials and references are checked at application stage only - please verify current insurance and credentials directly with any tradesperson before work begins or any money is paid.
What hiring a roofer in Derry & Strabane looks like
Derry & Strabane is the north-west's main urban district, home to around 151,000 people across towns like Londonderry and Strabane. Derry/Londonderry has dense terraces and post-war estates across the city, while the district stretches into dispersed rural housing toward Strabane and the Sperrins.
For a roofer that usually means roof repairs, re-roofs and flat-roof replacements. Derry/Londonderry is served by the firmus gas network and Strabane was connected under the Gas to the West project, but rural parts of the district remain largely oil-heated.
Derry & Strabane at a glance
Population
around 151,000 (2021 Census)
Main towns
Londonderry, Strabane
District
the north-west's main urban district
Heating
Derry/Londonderry is served by the firmus gas network and Strabane was connected under the Gas to the West project, but rural parts of the district remain largely oil-heated.
Extension Building Control fee
around £385 (Full Plans, 2026)
Sources: NISRA Census 2021 (population); each council's published Building Control fees schedule (2026 snapshot, fees rise each April); Phoenix Energy, firmus energy and the Gas to the West project (gas-network coverage).
★
No reviews for roofers yet
Reviews on NI Trades are tied to verified jobs. As soon as a homeowner hires a roofer through the platform and the job completes, ratings will start appearing here.
How it works
1
1
Post your job
Describe what needs doing and confirm your job is in Derry & Strabane. Tradespeople see only the job - never your contact details.
2
2
Get notified of interest
When a vetted tradesperson expresses interest you get a notification. Maximum 3 per job - no spam.
3
3
Choose and connect
Only profiles of tradespeople interested in your specific job are revealed. You decide who to contact.
Building Control and approvals in Derry & Strabane
If your roofer job involves building, electrical, heating or drainage work that needs sign-off, it is approved by Derry City and Strabane District Council's own Building Control office, not a UK-wide body. A typical domestic extension on the Full Plans route costs around £385 in Derry & Strabane as of 2026, and Building Control fees across the 11 NI councils rise each April.
Before work starts, check whether you also need planning permission: see our NI planning permission guide and NI Building Regulations guide. Council Building Control applications across Northern Ireland go through Building Control NI.
Common services
- Roof tile & slate repair and replacement
- Full roof strip and re-roof
- Flat roof installation (felt, EPDM, GRP)
- Lead flashing & valley repair
- Guttering, fascias & soffits
- Chimney repointing & resealing
- Velux & roof window fitting
- Moss & algae treatment
- Roof inspection & survey
- Ridge & hip tile repointing
- Dormer construction
- Emergency weather damage repair
What to ask before hiring
- Do you provide a written guarantee on work and materials?
- Are you insured for working at height?
- Will scaffolding be provided and is it included?
- Will you remove and dispose of old materials?
- Are you a member of NFRC or equivalent?
- Can you provide references from similar jobs?
- Have you worked on this type of roof (tile, slate, flat) before?
Typical costs in Northern Ireland
| Job type | Typical price | Notes |
|---|
| Roof inspection | £100–£250 | Visual survey and report |
| Single tile/slate replacement | £100–£250 | Minimum call-out usually applies |
| Gutter replacement (semi-det.) | £400–£900 | uPVC replacement, full run |
| Fascias & soffits (semi-det.) | £800–£2,000 | uPVC replacement |
| Re-roof 3-bed semi | £5,000–£12,000 | Strip and replace, tiles or slate |
| Flat roof replacement (per m²) | £50–£120/m² | EPDM or GRP rubber |
| Lead flashing repair | £250–£600 | Per section, chimney stack area |
| Velux window installation | £600–£1,500 | Per window, supply and fit |
Qualifications & accreditations to look for
NFRC Member
National Federation of Roofing Contractors — UK's leading trade body
CompetentRoofer
Government-approved competent person scheme
CITB Health & Safety
Construction Industry Training Board certification
Working at Height Qualification
PASMA or IPAF for scaffold and platform use
Public Liability Insurance
Minimum £1m — essential for roofing work
Frequently asked questions
How do I know if my roof needs replacing or just repairing?
If your roof is under 20 years old and only a small number of tiles are damaged, repair is usually the right answer. If it is over 25–30 years old, has widespread issues, missing felt, significant moss growth or recurring leaks, a full replacement is often more cost-effective long-term. A good roofer will give an honest assessment — be wary of anyone who immediately recommends a full replacement without first inspecting properly.
Do I need scaffolding for roof work?
For safety and legal reasons, almost all roof work above single storey requires scaffolding. Any contractor who says they will work from ladders alone on a two-storey property should be avoided. Scaffolding adds cost but is non-negotiable for safe working at height. It should be included in your quote.
What is the difference between felt, EPDM and GRP flat roofing?
Traditional felt is the cheapest option (10–15 year lifespan). EPDM (rubber) is more durable (20–25 years) and excellent in the wet NI climate. GRP (fibreglass) is the most durable (25+ years) and seamless. For NI's high rainfall, EPDM or GRP are the better long-term investments.
How long does a new roof last?
Clay and concrete tiles last 50–100 years. Natural slate can last 80–150 years. Concrete interlocking tiles last 30–50 years. Flat roofing lifespan depends on material: felt 10–15 years, EPDM 20–25 years, GRP 25+ years. Proper maintenance and annual inspection significantly extends roof life.
Helpful NI guides for hiring a roofer
Important
Always get a written guarantee covering both materials and workmanship before any roof work starts. Reputable roofers provide at least a 10-year guarantee on new roof installations. Never pay the full amount upfront.
Derry & Strabane is part of our Northern Ireland directory. NI Trades is an introduction service, we list tradespeople who have passed our application-stage checks, but we are not party to any contract you enter into with a tradesperson. See how we vet tradespeople or browse all trade categories.