The Eight Red Flags
1. They knocked on your door unsolicited after a storm
Cold-calling after storm events is the most common first contact for rogue traders. Legitimate roofers have enough work through existing customers and referrals that they don’t need to canvas streets. A cold knock isn’t automatically a red flag — some genuine local traders do it — but it should make you apply all the other checks rigorously.
2. They spotted serious damage you can’t see from the ground
This is the classic opener: “I was working on a house down the road and I noticed your ridge is collapsing.” Always verify claimed damage independently before agreeing to work. Ask them to photograph it from the roof, send the photos to your phone before they come down, and get a second opinion before authorising anything.
3. They want cash, upfront, in full
A reasonable deposit (10–25%) is normal for a large job. Full payment in cash before the work starts is not. It removes all your recourse if the work is inadequate or not completed.
4. They have no verifiable address
Ask for a business address — not just a mobile number. Check it on Google Maps. A legitimate roofing contractor has a fixed base you can visit or send correspondence to. “We’re just based everywhere, mate” is not an address.
5. They can’t provide proof of public liability insurance
Any contractor working on your roof should carry at minimum £1 million public liability insurance. Ask for the certificate and check it hasn’t expired. Legitimate contractors carry this document routinely and are not offended by the request.
6. They pressure you for an immediate decision
“I can do it now while my lads are here but if you wait the price goes up” is a pressure tactic. Genuine contractors give written quotes that are valid for 30 days minimum. Any urgency framing designed to stop you getting other quotes is a warning sign.
7. The quote is verbal only
Get everything in writing before any work starts: what’s being done, what materials are being used (including manufacturer and product names), the total cost, the payment schedule, and the guarantee terms. A verbal agreement is difficult to enforce if the work is disputed.
8. They can’t provide references from the local area
A roofer who’s been working in Aylesbury for any length of time should be able to provide references from customers within a reasonable distance. Ask for two or three, call them, and ask specifically about whether the job matched the quote and whether there were any issues.
How to Verify a Roofer
NFRC (National Federation of Roofing Contractors) registration is the most reliable independent check. Members are vetted for insurance, trading history, and quality standards. Check registration at nfrc.co.uk using the contractor’s name or company number. Also check Companies House for trading history — a company registered two weeks ago with no trading history is not a long-established local business.
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