How to Hire a Trusted Roofer for Repairs in 2026 UK
Roofing scams cost UK households £21m a year (TrustMark data). The good news: 9 specific questions, two credential checks and one phone call screen out almost every cowboy. This is the BestBuilders 2026 vetting checklist — the same one our trusted-builder team uses to onboard.
2026 UK Roofer Vetting — The Non-Negotiables
✅ Hire Them If
- NFRC member with verifiable membership number
- CompetentRoofer-registered (Building Regs self-cert)
- £2m+ public liability + £10m employer's liability
- Scaffolding sub-contracted to NASC member, not "ladder & harness"
- Written, itemised quote — fixed price for work specified
- VAT explicit (included or excluded)
- Last 3 jobs with addresses and references
- 10–25-year insurance-backed workmanship guarantee
- Established 5+ years in UK at same trading address
❌ Walk Away If
- "Cash discount" or 50%+ deposit demanded upfront
- "We were just in your area" doorstep cold-call
- Cannot produce insurance certificates same day
- "Ladder & harness only — scaffolding not needed"
- "Estimate" rather than "quote" — no fixed price
- No proof of NFRC or CompetentRoofer membership
- Pressure to start "today" or "tomorrow"
- Mobile-only number, no fixed business address
UK 2026 Roof Repair Cost Map
| Repair | Realistic UK 2026 cost | Time on site |
|---|---|---|
| Replace 2–4 slipped tiles | £180–£380 | 1–2 hrs (with scaffold) |
| Repoint chimney flashings | £450–£950 | 1 day |
| Replace lead valley | £900–£1,800 | 1–2 days |
| Re-felt + re-batten section | £1,800–£3,800 | 3–5 days |
| Full re-roof (terrace, 60m²) | £6k–£12k | 5–10 days |
Before You Sign Anything
1. "What's your NFRC membership number?"
Verify on nfrc.co.uk — takes 30 seconds.
2. "Are you CompetentRoofer-registered?"
Required for any work covered by Building Regs Part L (re-roofs, >25% renewal).
3. "Can I see your insurance certificates?"
Both public liability and employer's liability — must be in date and issued to the trading entity on the quote.
4. "Who supplies the scaffolding?"
An NASC scaffolder, not "we use a ladder." NASC members carry their own £10m liability.
5. "What's the workmanship guarantee?"
10–25 years, insurance-backed (NFRC IBG or equivalent). A "lifetime" verbal guarantee is worthless.
6. "Can I have three references with addresses?"
Drive past one. Look up — does the work look 5+ years old?
Skip the Vetting — We've Already Done It
BestBuilders matches you with up to 3 vetted UK roofers — every one carrying NFRC or CompetentRoofer credentials and active insurance.