Every year, London homeowners lose money to roofers who turn up without proper cover, do the work, then disappear the moment something goes wrong. So yes — roofers absolutely need insurance, and any reputable contractor will also back their work with a written guarantee. The harder part is knowing exactly what cover to ask for, what a guarantee should actually promise, and how to spot a contractor who’s bluffing. This guide breaks down both, so you can vet a roofer properly before they ever set foot on your ladder.
Why Roofer Insurance Matters in London
A roof job isn’t risk-free. Tiles slip, scaffolding shifts, and tools get dropped — sometimes onto a neighbour’s car, a conservatory roof, or a passer-by. Without insurance, any damage or injury caused during the work becomes your financial problem, not the contractor’s.
This risk is higher than average in London for a simple reason: the city’s housing stock. Many properties in boroughs like Camden, Hampstead, and Hendon are Victorian or Edwardian terraces, often in conservation areas, with shared party walls and tightly packed neighbours. A scaffolding accident or a chimney repair gone wrong doesn’t just affect your home — it can affect the house next door. Proper insurance is what stands between “minor accident” and “expensive legal dispute.”
What Insurance Should a Roofing Contractor Have?
A genuinely insured roofer should be able to produce documentation for the following, without hesitation:
| Insurance Type | What It Covers | Why It Matters |
|---|---|---|
| Public Liability Insurance | Damage to your property or injury to third parties during the job | Protects you if a tile smashes a window or scaffolding damages a fence |
| Employer’s Liability Insurance | Injury to the contractor’s own staff while on site | Legally required if they employ anyone — protects you from claims if a worker is hurt on your property |
| Professional Indemnity Insurance | Errors in advice, design, or specification (less common for trade roofers, more relevant for larger commercial jobs) | Useful for larger or structural projects involving design decisions |
Ask to see the certificate, not just take their word for it. A legitimate contractor will have the policy number, insurer name, and expiry date readily available — and won’t be offended that you asked.
What Is a Roofing Guarantee — and Why Should You Ask for One?
A guarantee (sometimes called a workmanship warranty) is the contractor’s written promise that the work will perform as expected for a set period — typically anywhere from 2 to 10+ years depending on the job. It should clearly state:
- What’s covered (workmanship, materials, or both)
- The exact duration of cover
- What invalidates it (e.g. unrelated third-party work, lack of maintenance)
- How to make a claim if something fails
Without a written guarantee, “we stand by our work” is just a verbal promise with no legal weight. If a roof you paid for starts leaking eight months later, a proper guarantee is what gets it fixed without you paying twice.
Insurance-Backed Guarantees (IBGs) Explained
The strongest form of protection is an insurance-backed guarantee. Here’s the difference, and it matters more than most homeowners realise:
- A standard contractor guarantee is only as good as the contractor. If the company goes bust, the guarantee becomes worthless.
- An insurance-backed guarantee is underwritten by a separate insurer. Even if the original roofing company closes down, the guarantee remains valid and a claim can still be paid out.
For larger jobs—full roof replacements, new flat roof installations, or major chimney work—it’s worth specifically asking whether an IBG is available, particularly on period properties where remedial work is expensive.
Red Flags: Signs a Roofer Doesn’t Have Proper Cover
Watch for these warning signs when getting quotes:
- They can’t (or won’t) provide insurance certificates on request
- The guarantee is verbal only, never written down
- They pressure you to sign or pay before you’ve seen any documentation
- They ask for full payment upfront, before work has even started
- They have no fixed business address, only a mobile number
- Online reviews mention disappearing companies or unanswered guarantee claims
Any one of these alone isn’t necessarily disqualifying, but two or more together is a strong signal to walk away. If you want a fuller picture of common roofing scam tactics in London, our guide on spotting a roofing scam covers this in more depth.
How Smart Roofing London Can Help
Smart Roofing London was founded by Fadi Faroukh, a Civil Engineering graduate from the University of Bristol and an NFRC-accredited contractor, building on his family’s hands-on roofing background. That combination of formal engineering training and practical, generational roofing knowledge shapes how every job is run.
Every project carries full public and employer’s liability insurance, and we provide written guarantees on workmanship as standard—with insurance-backed options available on larger installations. Documentation is shared upfront, before any work begins, not produced only when asked. If you’d like to see exactly what a quote includes before committing to anyone, request a free, no-obligation quote and we’ll walk you through the cover and guarantee terms in plain English.
Frequently Asked Questions
Is it illegal for a roofer to work without insurance in the UK?
There’s no single law forcing self-employed roofers to carry public liability insurance, but employer’s liability insurance is a legal requirement if they have employees. Reputable contractors carry public liability regardless, because the financial risk of an uninsured accident is significant.
How long should a roofing guarantee last?
It depends on the job. Repairs might carry a 1–2 year guarantee, while full roof replacements commonly come with 10+ years on materials and workmanship. Always check the specific terms rather than assuming.
What happens if my roofer goes out of business after the work is done?
With a standard guarantee, you may have little recourse. With an insurance-backed guarantee, the cover stays valid through a separate insurer, so you can still claim even if the original company no longer exists.
Can I ask to see proof of insurance before hiring?
Yes, and you should. Any legitimate contractor will provide certificates without hesitation. Hesitation or excuses are a red flag worth taking seriously.
Does a guarantee cover storm damage after the work is finished?
Typically no — workmanship guarantees cover defects in the work itself, not unrelated events like storm damage. Storm damage is usually a separate matter for your home insurance policy.
In Summary
Insurance and guarantees aren’t paperwork formalities — they’re what protects you if something goes wrong, whether that’s an accident during the job or a fault appearing months later. Before hiring any roofer in London, ask to see their insurance certificates, get the guarantee in writing, and check whether it’s insurance-backed for larger jobs.
If you’d like a roofer who puts that documentation in front of you upfront, request a free quote from Smart Roofing London — we’re happy to talk through cover and guarantee terms before you commit to anything.
