Roofing is one of the highest-value repairs a UK homeowner makes — and one of the most exploited. Rogue traders, vague verbal agreements, and quotes that omit critical details account for a significant share of the disputes and failed jobs that end up costing homeowners far more than the original repair would have.
The difference between a roofing quote that protects you and one that leaves you exposed is almost entirely about what is written down before you agree to anything. A quote that specifies materials, confirms insurance, details the guarantee, and clearly outlines what is included gives you protection if anything goes wrong. A quote that says "roof repair — £650" gives you almost nothing.
This guide tells you precisely what a roofing quote from any UK contractor should contain, what each element protects you against, and the specific warning signs in a quote that indicate you should seek a different contractor before spending any money.
The 8 Things Every Roofing Quote Must Include
Work through this checklist before accepting any quote. Every item listed is either a legal protection, a financial protection, or a quality assurance. Missing any of them puts you at risk.
A legitimate roofing quote must be issued on headed paper or a document that clearly identifies the business behind it. This sounds obvious but is regularly absent from quotes issued by unregistered traders. If a dispute arises later, you need to be able to identify and contact the business legally — an unsigned note with a mobile number is not sufficient.
Exactly as the business is registered — not just a first name or nickname. If they trade as "XYZ Roofing Ltd" or "John Smith Roofing," that full name must appear on the quote.
Not just a mobile number. A physical address — even a home address for sole traders — gives you a legal means of contact. A PO Box alone is insufficient for significant work.
At least one phone number (not just WhatsApp) and a business email address. A Gmail address for a company claiming years of professional experience is a minor yellow flag.
Businesses turning over more than £90,000 per year must be VAT registered. If a roofer claims to be a large established company but is not VAT registered, that is worth querying.
Limited companies must include their registration number on formal documents. You can verify any UK company at Companies House (companieshouse.gov.uk) in under a minute.
If the contractor is a limited company, check their Companies House record before agreeing to work. You can see how long they have been incorporated, whether they are actively trading, and their registered address — a 3-month-old company claiming "20 years experience" is a red flag.
Public liability insurance protects you — the homeowner — if the contractor's work causes damage to your property or injury to a third party. Without it, any damage caused during the roofing work, or by a failure of the completed work, falls on your home insurance rather than the contractor's policy. This is the single most important document to request from any roofing contractor before work begins.
The quote should state that the contractor holds public liability insurance. The certificate — which shows the insurer, policy number, coverage amount, and expiry date — should be provided on request before any work begins. Do not accept "I have insurance" verbally — request the certificate.
For residential roofing work, £1 million minimum coverage is the standard. Established contractors typically carry £2–5 million. Coverage below £1 million for work on your home is inadequate.
If the contractor brings a team, they are legally required to hold employer's liability insurance. This is separate from public liability and protects you from claims by workers injured on your property if the contractor's own cover fails.
Some policies exclude specific work types — for example, work above a certain height, or specific materials like leadwork. Ask the contractor to confirm their policy covers the exact work quoted.
Never allow roofing work to begin until you have seen and retained a copy of the insurance certificate. An uninsured contractor working on your roof is a risk that falls entirely on you if anything goes wrong. This is the point on which most homeowner disputes with roofers become expensive — the certificate is your protection.
The scope of work is the description of exactly what the contractor will do. This is where most ambiguous or fraudulent quotes fall short — the description is so vague that when the contractor completes a minimal version of the job, they can claim they did what was quoted. "Roof repair" is not a scope of work. "Replace 6 broken concrete interlocking tiles on the rear elevation, including re-felt where the underlay has torn at the affected section, and apply new mortar bedding to the ridge tile adjacent to the repair" is a scope of work.
Each task listed separately. "Repair roof" tells you nothing. "Strip and re-felt the rear flat roof extension (approx. 18m²), install new EPDM membrane, and dress all upstands and perimeter edges" tells you exactly what you are buying.
For flat roofing: the membrane type (EPDM, GRP, felt), the brand, and the thickness. For tiles: the manufacturer, type, and colour. For leadwork: the lead code (typically Code 4 or Code 5 for residential). Vague references to "quality materials" mean nothing and protect you against nothing.
For flat roof replacement: total area in m². For ridge repointing: total length in metres. For tile replacement: number of tiles. These quantities let you compare quotes meaningfully and verify that the completed job matches what was agreed.
A good quote states what is not included — for example, "this quote does not include scaffolding, which will be arranged and costed separately" or "this price assumes no rot is found in the underlying timber once tiles are removed. Any remedial timber work will be quoted separately." This transparency prevents surprise additions mid-job.
Specify whether the price includes removal and disposal of all old materials. If a contractor replaces your flat roof and leaves the old felt and debris on your drive, that is an additional disposal cost — and a potential dispute — if it was not explicitly agreed.
If you receive a verbal quote or a vague written one, ask the contractor to provide a written breakdown before you decide. A contractor who resists writing down exactly what they will do is a contractor whose work you cannot hold to any defined standard.
There are two legitimate types of pricing document in roofing. A fixed quote is a binding price — the contractor commits to doing the work described for the stated amount, regardless of how long it takes. An estimate is an approximate figure that may change depending on what is found during the work. Both are legitimate. The problem arises when a contractor presents what looks like a fixed quote but uses language that allows them to charge more without notice.
The distinction matters legally. A quotation is a fixed offer. An estimate is an approximation. If you accept a quotation, the contractor is bound to that price for the work described.
The price should clearly state whether VAT is included or excluded. A quote of £1,200 that excludes VAT is actually £1,440 if the contractor is VAT registered. This distinction should never be assumed — it must be stated.
For example: "This quotation is based on the roof being accessible without scaffold. Should scaffold be required, this will be quoted separately before work commences." Any legitimate variation should be agreed in writing before additional work proceeds — not added to the final invoice as a surprise.
Material prices fluctuate. A reputable contractor will state how long their quote is valid — typically 30 to 90 days. If you return to accept a quote eight months later, it may legitimately be re-priced. A quote with no validity period gives you less certainty.
Payment terms should appear on every quote. A reasonable structure for most roofing jobs is: 10–25% deposit on acceptance (for materials purchase), with the balance due on satisfactory completion. Any request for more than 25% upfront — particularly for a smaller job — is worth questioning.
A workmanship guarantee means the contractor stands behind the quality of their work. If the repair they carried out fails within the guarantee period, they will return and put it right at no additional cost. Without a written guarantee, you have no contractual basis to call a contractor back if the repaired area starts leaking six months later.
Minimum acceptable: 1 year for minor repairs. Standard for significant work: 5–10 years. For full roof replacements: 10+ years workmanship guarantee alongside the manufacturer's material guarantee. "We stand by our work" is not a guarantee — a specific number of years, in writing, is.
A guarantee on workmanship does not typically cover damage from subsequent storms, vandalism, or unrelated structural movement. These exclusions are legitimate — but they should be stated clearly. Any guarantee that excludes so much as to be practically worthless (for example, "guarantee void if any other person accesses the roof area") is worth challenging.
For flat roofing systems (EPDM, GRP, single-ply), most materials carry a manufacturer's guarantee of 10–25 years. For Velux roof windows, this is typically 10 years. These guarantees are issued by the manufacturer directly and are transferable if you sell your home — ask for the documentation on installation.
Manufacturer-approved installers can issue extended material guarantees that non-approved contractors cannot. For EPDM flat roofing, for example, an approved installer may offer a 20-year manufacturer-backed guarantee — a non-approved installer offers only their own workmanship guarantee. Ask if your contractor holds approved installer status for the materials they are quoting.
A roofing quote should specify when the work will begin, approximately how long it will take, and what access to your property the contractor requires. This protects you from a contractor who accepts a deposit and then delays the start by weeks, or whose crew requires access you have not agreed to.
Even "subject to weather conditions, we propose to begin within 2 weeks of acceptance" is better than no stated timeline. Contractors who cannot give any indication of when they will start should be asked directly — and a vague answer may indicate an overstretched schedule.
A single tile repair should take a few hours. A full flat roof replacement on an extension might take 1–3 days. A full re-roof on a large property can take 1–2 weeks. If the stated duration seems implausibly short for the scope described, ask how the contractor plans to complete the work in that time.
Scaffold is often arranged and costed separately from the roofing work itself. Clarify whether the roofing quote includes scaffold, whether the contractor arranges it, and what the additional cost is. Scaffold should never be removed mid-job before the work is completed to standard.
Particularly relevant if you work from home or have young children. Confirm the expected working hours (typically 8am–5pm weekdays) and whether weekend working is planned. A contractor who works significantly outside these hours without prior agreement, or who leaves materials blocking access to your property overnight, is worth a direct conversation.
While not legally required, trade accreditations on a quote signal that the contractor operates to a defined standard and has submitted to independent assessment. The most relevant accreditations for UK residential roofing are:
The UK's largest roofing trade body. Members are assessed for workmanship standards, insurance, and business practice. Verifiable at nfrc.co.uk. NFRC members are also bound by a formal Code of Practice that provides a complaints escalation route.
Government-endorsed quality scheme covering trades businesses. TrustMark-registered contractors are vetted for technical competence, customer service, and trading practice. Verifiable at trustmark.org.uk. Particularly relevant for work covered under government grant schemes.
For flat roofing, roof windows, or specific materials, manufacturer-approved installers can offer guarantees that non-approved contractors cannot. Ask if the contractor is an approved installer for the specific materials they are quoting.
Accreditations on a quote are only worth anything if they are genuine. Verify any claimed membership directly with the trade body before placing significant weight on it. The NFRC, TrustMark, and most manufacturer programmes all have searchable online member directories.
A roofing quote that has not been signed and dated by the contractor is not a formal document — it is an informal communication. A signed quote, combined with your written acceptance, constitutes a contract. That contract is enforceable. An unsigned email or informal note is significantly harder to rely on if a dispute arises.
Electronic signatures are legally valid in the UK. A typed name at the bottom of an email from the contractor's business address is generally considered sufficient. A handwritten signature on a printed document is clearest.
The date establishes when the price was quoted and starts the validity clock. A quote with no date is harder to rely on if the contractor later claims prices have changed.
When you accept a quote — whether by email, by signing a printed copy, or by paying a deposit — keep a record of exactly what was agreed. If you accept by email, save the email thread. If the contractor requests a signed printed copy, photograph it before handing it over.
The Red Flag Checklist — Quotes That Raise Serious Concerns
Some characteristics of a roofing quote are not just incomplete — they are warning signs of a contractor who may not deliver, may not be insured, or may be operating dishonestly. Any single item on this list warrants further investigation before proceeding.
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Cash only, no receipts
A contractor who insists on cash payment and cannot provide a receipt is operating outside the normal business structure. You have no paper trail if the work is substandard or the contractor disappears.
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Large upfront payment demanded — 50% or more before work starts
A 10–25% deposit for materials is reasonable. Requests for 50% or full payment before any work begins are a significant warning sign, particularly from a contractor you have not previously used.
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No written quote — verbal only, or text message only
Verbal quotes offer no legal protection. If a contractor refuses to provide a written document, you cannot hold them to any specific price, specification, or timeline.
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Extreme urgency pressure — "I can only do this price today"
High-pressure sales tactics are a common rogue trader technique. A legitimate contractor quotes competitively and allows you time to compare. A roofer who creates artificial urgency to prevent you from getting other quotes is a contractor to avoid.
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Unsolicited door-knock — "I spotted a problem while working nearby"
This is the most common approach used by rogue traders in the UK. Legitimate roofing contractors do not typically cold-knock on doors to find work. If someone approaches you this way, do not allow them onto your roof to "show you the problem" — get independent quotes from verified contractors instead.
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No insurance certificate provided when requested
If a contractor cannot or will not provide a public liability insurance certificate, do not allow work to begin. Working with an uninsured contractor on your property exposes you to significant financial risk if damage occurs.
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Quote significantly lower than all others received
An unusually low quote typically means one of three things: inferior materials are planned, the scope has been misunderstood, or additional costs will be added once work begins and stopping would be expensive. In roofing, a quote 30% below the next-lowest should always prompt a direct conversation about exactly what is included.
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Contractor uses sub-contractors without disclosing this
Many legitimate roofing businesses use sub-contractors. The issue is when this is not disclosed and the sub-contractor's insurance and qualifications are not verified. Ask directly: "Will you be carrying out the work personally, or will sub-contractors be used?"
Quick Reference: What a Good Roofing Quote Contains vs a Poor One
| Quote element | Good quote | Poor quote |
|---|---|---|
| Business details | Full company name, address, phone, email Must have | First name and mobile number only Red flag |
| Insurance | PLI confirmed, certificate available on request Must have | Not mentioned Red flag |
| Scope of work | Specific tasks, materials, measurements, exclusions Must have | "Roof repair" with no further detail Red flag |
| Materials | Brand, grade, and type specified Must have | "Quality materials" with no specification Red flag |
| Total price | Fixed price with VAT status clear Must have | Verbal or approximate only Red flag |
| Payment terms | Deposit 10–25%, balance on completion Must have | 50%+ upfront required Red flag |
| Workmanship guarantee | Written, specific duration (e.g. 10 years) Must have | Not mentioned or "we guarantee our work" Red flag |
| Timeline | Proposed start date and estimated duration Good sign | No timeline given Red flag |
| Accreditation | NFRC, TrustMark, or manufacturer-approved Good sign | No memberships — not automatically disqualifying Worth checking |
| Signed and dated | Signed by contractor, dated, clear validity period Must have | Unsigned, undated, or informal note Red flag |
Frequently Asked Questions About Roofing Quotes
Most UK roofing contractors provide quotes free of charge for straightforward residential work. You may be charged for a professional inspection involving scaffold, specialist access equipment, or a drone survey — typically £150–£300 — but this should be confirmed before it takes place. Always ask whether the quote is free before inviting a contractor to assess the work.
If you accepted a written quotation (not estimate), the price is fixed for the work described. A contractor can legitimately revise the price only if the scope of work changes — for example, if rot is discovered in the timbers once tiles are removed. That additional cost should be agreed in writing before the additional work proceeds, not added to the final invoice without discussion. If a contractor attempts to increase the price on a fixed quotation without a legitimate change in scope, you have grounds to refuse the increase.
For any job over £300, getting at least two quotes is strongly advisable. Three is better. Multiple quotes let you understand the market rate for your job, identify any outliers — suspiciously cheap or unusually expensive — and compare what is included in each. A single quote provides a number but no context. The time spent getting two additional quotes is almost always worthwhile for significant roofing work.
If you have a written quote and contract, your first step is to raise the issue in writing with the contractor directly, giving them a reasonable opportunity to return and rectify any defective work. If this fails, and the contractor is NFRC-registered, you can escalate to the NFRC's complaints process. For TrustMark-registered contractors, TrustMark's Alternative Dispute Resolution service provides a formal route. If the contractor is unregistered and unresponsive, your options include the Consumer Rights Act 2015 (if they are a trader) and small claims court for amounts up to £10,000. Citizens Advice is a free starting point for guidance on any dispute.
Technically, verbal contracts can be legally binding in the UK — but they are extremely difficult to enforce. Without a written record of what was agreed, any dispute about price, materials, or workmanship becomes a matter of one person's word against another's. In practice, pursuing a roofer for a verbal agreement through the courts is rarely successful and always stressful. Always insist on a written quote before agreeing to any work.
A quote is a fixed price for a defined scope of work. If you accept a quote, the contractor is bound to carry out the specified work at that price. An estimate is an approximate figure that may change — often because the full extent of the work cannot be assessed until tiles are removed or the structure is inspected more closely. Both are legitimate. What matters is that the document is clearly labelled as one or the other, and that any conditions under which the estimate may change are clearly stated.
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Your Quote Checklist — Summary
Before accepting any roofing quote, confirm you have all of the following in writing:
- Full company name, address, phone, and email — verifiable against Companies House if applicable
- Public liability insurance confirmed — certificate available on request
- Detailed scope of work — specific tasks, materials (brand and grade), measurements, and exclusions
- Fixed total price with VAT status clear, or a written estimate with stated conditions for variation
- Payment terms — reasonable deposit (max 25%), balance on satisfactory completion
- Written workmanship guarantee with a specific duration
- Proposed start date and approximate duration of the work
- Any trade accreditations — verified independently where relevant
- Signed and dated document with a stated validity period
A contractor who provides all of the above is a contractor who is confident in their work, transparent about their business, and prepared to be held to what they have agreed. That is the standard to hold every quote to — regardless of whether the job is a £200 gutter repair or a £12,000 re-roof.