How to Find and Vet a Roofing Contractor UK

Roofing sits near the top of any list of high-risk trades in the UK — both physically and financially. A failed or botched roof repair can cause tens of thousands of pounds of water damage before you notice a problem. Yet the roofing industry remains largely unregulated: anyone can call themselves a roofer, buy a few tools, and start knocking on doors. The result is that cowboy builders are more prevalent in roofing than almost any other trade.

This guide gives you a clear, step-by-step process for finding a qualified roofing contractor, knowing exactly what to check before you hand over any money, and spotting the red flags that should make you walk away.

Why Roofing Attracts Cowboy Builders

Several factors combine to make roofing fertile ground for fraud and poor workmanship:

Work is out of sight. Most homeowners can't get onto their own roof to inspect work in progress or check quality on completion.
Storm-chasers. After a period of bad weather, opportunistic traders canvass streets looking for vulnerable homeowners. They offer quick, cheap fixes — often making problems worse.
High labour-to-material ratio. A re-roof can cost £8,000–£20,000. Labour may represent 50–60% of that. There is a huge incentive to cut corners.
Cash-in-hand culture. Pressure to pay upfront in cash remains common — leaving you with little recourse if things go wrong.

Understanding these risks means you're already better protected than most.

How to Find a Qualified Roofing Contractor

Use the NFRC Register

The National Federation of Roofing Contractors (NFRC) is the UK's largest roofing trade body. Member companies must meet minimum standards for technical competence, carry appropriate insurance, and comply with a code of conduct. You can search by postcode at nfrc.co.uk.

NFRC membership is not a guarantee of quality, but it is a meaningful filter. Member firms have had their credentials checked and can be sanctioned for complaints.

Check TrustMark Registration

TrustMark is a government-endorsed quality scheme covering many trades, including roofing. Registered firms have been vetted for technical competence, customer service, and trading practices. Search at trustmark.org.uk.

TrustMark registration also matters if you plan to use any government-backed funding schemes (such as ECO4 or the Warm Homes Local Grant), where registered installers are often required.

Other Sources Worth Using

Which? Trusted Traders — independent endorsement with ongoing monitoring
Checkatrade / Rated People — useful for reading verified reviews, but vet the contractor independently before hiring
Personal recommendations from neighbours who had similar work done recently
Your mortgage lender or insurer — if your claim is related, they may maintain an approved contractor list

What to Check Before Hiring

Once you have a shortlist, conduct proper due diligence before inviting anyone to quote.

1. Public Liability Insurance

Any contractor working on your property should carry public liability insurance of at least £2 million (ideally £5 million for roof work, given the risks). Ask for a copy of the certificate and verify it is current. Do not accept a verbal assurance.

2. Employer's Liability Insurance

If the contractor employs anyone (including subcontractors), they are legally required to hold employer's liability insurance. This protects their workers — and you — if someone is injured on your property.

3. Scaffolding Ownership and Safety

Roofing almost always requires scaffolding. Confirm:

Who is erecting the scaffold — the roofer directly, or a separate scaffolding firm?
Is the scaffolding CISRS (Construction Industry Scaffolders Record Scheme) certified?
Will there be a handover certificate once the scaffold is up?
Who is responsible for inspections during the works?

Never accept a "ladder only" approach for work on a main roof — this is unsafe and may void your home insurance.

4. Written Quotes

Always obtain at least three written quotes before committing to anyone. Each quote should specify:

The exact work to be carried out
Materials to be used (manufacturer, product name, tile type, felt specification)
Start and completion dates
Payment schedule
Guarantee terms

A verbal quote is worthless if a dispute arises.

5. Payment Terms

Never pay the full amount upfront. A reasonable payment structure for a re-roof might be:

0% on signing (for a smaller job)
25–30% deposit on start of work (for larger jobs requiring material ordering)
Remainder on satisfactory completion

If a contractor demands full payment in advance, refuse. If they demand cash only, walk away.

Red Flags: When to Walk Away

Red Flag	Why It Matters
Asks for full payment in cash upfront	No paper trail; no recourse if work is poor or incomplete
No written quote or contract	No legal basis for a dispute; terms unenforceable
Cannot provide proof of insurance	You may be liable for injury or damage
Pressures you to decide immediately	Classic high-pressure sales tactic to prevent you shopping around
Claims to have "leftover materials" from nearby job	Common pretext for overpricing or unnecessary work
Quotes significantly lower than others without explanation	Either cutting corners on materials or planning to add costs mid-job
Asks you to pay for scaffolding before it arrives	Advance payment scam
No fixed address or landline	Harder to trace if they disappear
Won't let you speak to previous customers	Suggests poor track record

Typical Cost Ranges by Job Type

Costs vary significantly by region (London and the South East typically run 20–30% higher), roof pitch, access difficulty, and material specification. These figures are indicative for an average semi-detached or detached property in England.

Job Type	Typical Cost Range	Notes
Single tile/slate repair	£150–£400	Per call-out; includes scaffolding or MEWP access
Ridge tile repointing	£300–£800	More if full re-bedding required
Partial re-roof (one slope)	£2,500–£6,000	Depends on roof area and tile type
Full re-roof (tiles/slates)	£6,000–£20,000+	Size, material, and access dependent
Flat roof replacement (felt)	£1,200–£3,500	20–30 m² extension or garage
Flat roof replacement (EPDM rubber)	£1,800–£4,500	More durable; longer guarantee (typically 20 years)
GRP (fibreglass) flat roof	£2,000–£5,000	Premium option; 30+ year lifespan
Chimney repointing	£400–£1,200	Depends on height and extent of work
Fascia, soffit and guttering	£800–£2,500	Full replacement on semi-detached

All prices exclude VAT (most roofing work is subject to 20% VAT unless you qualify for a reduced rate under energy efficiency measures).

Questions to Ask When Getting Three Quotes

When a contractor comes to quote, treat it as an interview as much as a survey. Ask:

How long have you been trading? — Under two years without a strong track record warrants extra caution.
Are you NFRC or TrustMark registered? — Verify independently; don't just take their word for it.
Can I see your insurance certificates? — Ask to see the actual document, not a summary.
Who will actually do the work — your own employees or subcontractors? — Subcontracting is not inherently bad, but you need to know who is on your roof.
What materials will you use, and can you show me the spec sheet? — Pin down the exact product, not just "standard felt" or "good quality tiles."
What does your guarantee cover, and is it backed by a third party? — A guarantee from a contractor who has gone bust is worthless. Look for manufacturer-backed or insurance-backed guarantees.
Can you give me references from similar recent work I can contact? — Follow up on at least one.
What is your process if I find a defect after completion? — A reputable contractor will be clear about their callback policy.

What a Good Contract Should Include

Before work starts, insist on a written contract covering:

Full description of works — scope, materials, specification
Start and end dates — with a clause for weather-related delays
Total price — broken down by labour and materials where possible
Payment schedule — linked to project milestones, not calendar dates
Change-order procedure — how variations to the original scope are agreed and priced
Guarantee terms — duration, what is and isn't covered
Dispute resolution process — reference to NFRC or TrustMark complaints procedure where applicable
Waste removal — confirmation that all debris, old tiles, and materials will be removed from site
Insurance details — policy numbers and insurer names

Keep a copy of the signed contract, all correspondence, and a photographic record of the roof before, during, and after the work.

After the Work Is Done

Do a visual inspection from ground level and, if safe, inspect accessible areas (flat roof, garage, bay window roof) closely.
Test gutters and downpipes with a hose.
Check inside the loft space after the first significant rain for any signs of ingress.
Do not make final payment until you are satisfied. Withholding the final 10–20% until completion is a legitimate and effective protection.

Roofing is one area of home ownership where thorough vetting genuinely pays off. The extra time spent checking credentials, reading reviews, and comparing written quotes can save you from a serious — and expensive — headache.