What is an asbestos garage roof?
Most “asbestos garage roofs” are asbestos cement sheets (a highly-bonded material). This is generally considered lower risk than more friable asbestos products, but it still needs proper controls when worked on or asbestos removed.
Quick safety rules (before you do anything)
- Do not drill, cut, sand, scrape, or break the sheets.
- Do not pressure-wash an asbestos cement roof (this can spread fibres and debris).
- Do not sweep up dust/debris if you suspect asbestos — safe methods are different.
- If the roof is damaged and shedding debris, limit access to the area and get professional advice.
How to tell if your garage roof might be asbestos cement
You can’t confirm asbestos just by looking — testing/survey is the only way to be sure — but these clues often point to asbestos cement on older garages.
Common visual clues (not a guarantee)
| Clue | What it can indicate |
|---|---|
| Old grey corrugated sheets, weathered and dull | Common appearance of asbestos cement roofs on older garages |
| Bolted fixings visible (bolt heads/nuts through the sheet) | Asbestos cement sheets were often fixed with bolts rather than modern screws in some installs |
| Ridges/overlaps leaking rather than “middle of sheet” | Typical failure pattern on ageing corrugated sheet roofs |
| Surface looks pitted/dimpled (some sheets) | Sometimes reported as a possible indicator (still not confirmation) |
Best practice: If you’re unsure, describe it as “corrugated cement sheets (possibly asbestos)” when requesting quotes.
Is asbestos cement always dangerous?
Asbestos becomes most hazardous when fibres become airborne. Asbestos cement is typically highly bonded, so intact sheets can sometimes be managed safely without removal — but once sheets are cracked, broken, drilled, or weathered, risk increases and the right controls matter.
Your options: leave it, repair it, encapsulate it, or remove it
The right choice depends on the roof’s condition and your plans.
Decision table (homeowner-friendly)
| Condition | Typical approach | Why |
|---|---|---|
| Sheets intact, minimal damage, no planned work | Leave and manage | Avoid unnecessary disturbance |
| Minor damage (small defect), otherwise sound | Repair may be possible | Some repairs to asbestos cement are covered in HSE task guidance |
| Weathered surface / repeated minor issues | Encapsulation or replacement | Encapsulation can reduce fibre release risk; replacement solves recurring leaks |
| Cracked/broken sheets, leaks + debris, or you want a long-term upgrade | Removal + replacement | Controlled removal of asbestos and disposal reduces ongoing risk |
Can any roofer remove an asbestos garage roof?
Not all asbestos work is the same. In the UK:
- Some asbestos work is licensed (higher risk materials).
- Work on asbestos cement products (like roof sheeting) is often non-licensed, but it still requires correct controls, training, and sometimes notification depending on the job and the condition of the material.
HSE’s “Asbestos essentials” and the A-series task sheets include specific guidance for asbestos cement tasks (including gutters, repairs, and removing sheets).
Practical takeaway: When requesting quotes, say you want a contractor who is competent and appropriately trained for asbestos cement work, and who includes safe removal and disposal.
What a proper asbestos garage roof job usually includes
Whether you’re removing only, or removing + replacing, a good quote should be clear. Cost of garage asbestos roof replacement varies.
What to expect in a quote
| Item | What it means |
|---|---|
| Safe removal method | Removing sheets intact where possible, minimising breakage |
| PPE and site controls | Controls to protect workers and others nearby |
| Packaging and transport | Correct wrapping/bagging and transport as hazardous waste |
| Disposal route | Disposal at an appropriate facility with paperwork/traceability (as applicable) |
| Clean-down | Safe clean of work area (not dry sweeping) |
| Replacement roof (if included) | New covering, fixings, detailing, plus optional gutters |
Replacement roof choices after asbestos removal
Homeowners commonly replace asbestos cement garage roofs with:
- Steel corrugated sheets (durable, practical)
- Bitumen corrugated sheets (budget-friendly, lightweight)
- In some cases, a different roof style/system (depends on structure)
If you want like-for-like corrugated appearance, ask for corrugated replacement options in your quote request.
Regional availability (largest cities and UK-wide coverage)
Contractor availability and pricing can vary by area, but asbestos roof work is commonly quoted in and around major UK population centres such as London, Birmingham, Manchester, Leeds, Glasgow, Liverpool, Bristol, Sheffield, Edinburgh, Cardiff, Belfast (and surrounding towns), as well as across wider regions where garages with older cement sheets are common.
What to write in your quote request (copy/paste)
- Postcode
- “Corrugated cement garage roof (possibly asbestos)”
- Single or double garage (or rough length × width)
- Condition: intact / cracked / broken / leaking / debris present
- Access notes (tight driveway, attached garage, height issues)
- Whether you want removal only or removal + new roof installed
- Preferred replacement (steel / bitumen / “not sure – advise”)
Asbestos garage roof FAQs
Do I need to remove an asbestos garage roof straight away?
Not always. If asbestos cement sheets are intact and not being disturbed, they can sometimes be managed. If the roof is damaged, leaking badly, or you want an upgrade, replacement may be the best option.
Is asbestos cement “lower risk” than other asbestos?
Asbestos cement is typically a highly-bonded material, so it generally releases fewer fibres when intact compared with more friable products. Disturbing or damaging it still creates risk and needs proper controls.
Do I need a licensed asbestos contractor?
Some asbestos work must be done by licensed contractors, but asbestos cement roof sheeting is often classed as non-licensed work. Some non-licensed work is still notifiable, and the work must be done with the right controls and training.
Can I clean moss off an asbestos cement garage roof?
Be very careful: HSE provides task guidance for working on asbestos cement, and unsafe cleaning (like pressure washing) can spread debris and increase risk. If it needs cleaning, it’s usually best handled by someone trained to follow the correct method.
What’s the safest next step if I’m not sure it’s asbestos?
Treat it as suspected asbestos, avoid disturbing it, and request professional advice/testing so you know what you’re dealing with.