Solar Panels on an Asbestos Roof: Can You? Should You?
Technically possible — but genuinely one to be careful with. Here’s the honest, safety-led guide: why drilling asbestos is risky, and the better way to get solar.
The short answer
Technically, yes — but it’s strongly discouraged, and most reputable installers advise against it. The problem: fitting solar normally means drilling and fixing brackets, which disturbs the asbestos cement and can release carcinogenic fibres — a serious health hazard governed by strict UK regulations. Old asbestos roofs are also often fragile and not built to carry panels plus wind and snow loads.
So while it’s not outright illegal, the honest, safe advice is to deal with the asbestos first — usually by replacing the roof (licensed removal → new steel/composite roof → solar on the sound new roof). That removes the risk, gives you a roof that outlasts the panels, and improves safety, insurability and value. Alternatives (over-sheeting, non-penetrative mounts) exist but aren’t always suitable. The essential first step is a professional survey. Here’s the full picture.
What this guide covers
If you’ve an asbestos roof and want solar, you’ve likely had conflicting answers — some say “impossible,” others “no problem.” The honest truth sits in between, and it’s worth understanding properly, because this is one roof type where getting it wrong has real health consequences. Here’s the straight guide.
Can you put solar on an asbestos roof — and should you?
Technically, it can be done. But it’s strongly discouraged as a direct install, and here’s the honest reasoning. A standard solar installation involves drilling holes and fixing mounting brackets into the roof. On a normal roof that’s routine; on an asbestos cement roof it disturbs the material and risks releasing harmful fibres. On top of the health risk, these older roofs are frequently brittle and structurally marginal — often not designed to carry the added weight of panels plus wind uplift and snow. So the question isn’t really “can you?” (you technically can, with extreme care) but “should you drill into it?” — and the answer from most reputable installers is no, not if it can be avoided. The better route is to sort the asbestos first.
Why drilling into asbestos is dangerous
Safe when undisturbed — dangerous when drilled
The key thing to understand: asbestos is safe when left undisturbed, but drilling, cutting or breaking it releases microscopic fibres into the air. Inhaling those fibres is a serious health hazard, linked to asbestosis and mesothelioma (a cancer) — often decades later. Because standard solar mounting requires drilling holes for brackets, it directly risks fibre release. This isn’t scaremongering; it’s exactly why UK law tightly controls any work that disturbs asbestos, and why “just drilling a few holes for the brackets” is precisely the thing to avoid. If any work near asbestos is done, it must use proper controls (wet suppression, shadow vacuuming) by trained people — but the safest approach of all is to not drill into it in the first place, which means dealing with the roof before adding solar.
The regulations you need to know
Work involving asbestos in the UK is governed by real, enforced law:
- Control of Asbestos Regulations 2012 — enforced by the HSE; any disturbance of asbestos must be carefully planned and managed.
- Asbestos survey — buildings built or refurbished before 2000 may contain asbestos and should be surveyed to identify it before work.
- Licensed contractors — asbestos removal must be carried out by appropriately licensed and trained professionals.
- Control limits — drilling asbestos cement can cause fibre release that exceeds legal control limits, spreading contamination.
The practical upshot: this is not a DIY job, and even a professional solar installer will need the asbestos properly assessed (and usually handled by a licensed asbestos contractor) before anything happens. A professional survey is always the first step.
Your options, best to worst
| Option | What it involves | Verdict |
|---|---|---|
| 1. Replace the roof | Licensed removal + new steel/composite roof, then solar | Best — safe & long-term |
| 2. Over-sheet | New roof layer over the asbestos (encapsulates it), solar on top | Good where suitable |
| 3. Non-penetrative mounts | Ballasted/weighted frames, no drilling | Limited — adds weight |
| 4. Drill directly | Fixing through asbestos with controls | Strongly discouraged |
Replacing the roof is the cleanest and most recommended route — the asbestos is professionally removed, you get a modern roof (steel or composite) that will easily outlast the panels, and solar goes on a sound, compliant surface. It’s an added cost, but combining it with the solar install is efficient. Over-sheeting (adding a new layer over the asbestos to seal it in) can work where suitable. Non-penetrative ballasted mounts avoid drilling but add weight — a concern on already-fragile asbestos cement — and suit flat roofs more than pitched. Drilling directly is the last resort and strongly discouraged. Which is right depends entirely on your roof — hence the survey.
Asbestos garage & outbuilding roofs
A very common question — lots of older garages, sheds and outbuildings have asbestos cement roofs, and homeowners often wonder about putting a few panels there. The rules are exactly the same: don’t drill into it, and get it assessed. The good news is that on a small structure like a garage, asbestos removal is relatively contained and replacing the roof is often straightforward — after which solar mounts safely on the new surface. Alternatively, if the garage roof isn’t ideal, a ground-mounted system nearby can sidestep the asbestos issue entirely. Either way, a survey confirms the safest route for your specific setup.
The silver lining: safety, value & a better roof
It’s worth ending on the positive, because dealing with an asbestos roof isn’t just a hurdle — it’s an opportunity. Removing asbestos and fitting a modern roof improves your home’s safety, makes it easier to insure and mortgage, and increases buyer confidence, so it generally supports property value. Do it as part of a planned solar project and you get a safer, more valuable, more energy-efficient home in one coordinated job — plus a brand-new roof that will comfortably outlast your panels, so you’ll never need to remove them for roof work later. For many homeowners, the asbestos roof that felt like a barrier turns out to be the prompt for a genuinely worthwhile upgrade.
Solar on asbestos: the honest summary
✓ Good to know
- Solar IS achievable — the right way
- Replacing the roof is the best route
- New roof outlasts the panels
- Removal improves safety, value & insurability
- Over-sheeting/ballast options where suitable
- One coordinated project is efficient
✗ Watch out for
- Never drill into asbestos casually
- Fibre release = serious health risk
- Old asbestos cement is often too fragile
- Governed by strict HSE regulations
- Never a DIY job
- Adds cost vs a standard roof
Frequently asked questions
Can you put solar on an asbestos roof?
Technically yes, but it’s strongly discouraged — drilling to fix brackets disturbs the asbestos and can release carcinogenic fibres, and old asbestos roofs are often too fragile for panels. The honest advice is to deal with the asbestos first, usually by replacing the roof, rather than drilling into it.
Do I have to remove the asbestos first?
No absolute legal requirement, but it’s by far the most recommended route: licensed removal + a new roof, then solar on the sound surface. It removes the health risk and gives a roof that outlasts the panels. Over-sheeting or non-penetrative mounts are alternatives where suitable.
Why is drilling asbestos dangerous?
Asbestos is safe undisturbed, but drilling releases microscopic fibres that are dangerous to inhale — linked to asbestosis and mesothelioma. Standard solar mounting requires drilling, so it directly risks fibre release, which is why it’s tightly regulated and best avoided.
Can it be done without drilling?
Sometimes — non-penetrative ballasted mounts rest on weighted frames without drilling, and over-sheeting seals the asbestos under a new layer. Both reduce risk but aren’t suitable for every roof (ballast adds weight to fragile asbestos). A survey determines what’s safe.
What about an asbestos garage roof?
Same rules — don’t drill, get it assessed. On a small garage, asbestos removal is relatively contained and replacing the roof is often straightforward. Or a ground-mounted system nearby avoids the issue entirely.
Does removing asbestos add value?
Yes — it improves safety, insurability and mortgageability, and boosts buyer confidence, supporting property value. Done alongside solar, you get a safer, more valuable, more efficient home and a new roof that outlasts the panels, in one project.
Don’t drill it — replace it, then go solar
The bottom line: You can technically put solar on an asbestos roof, but you shouldn’t drill into it — disturbing asbestos releases carcinogenic fibres, and old asbestos cement is often too fragile anyway. The safe, honest route is to have the asbestos professionally removed and the roof replaced, then fit solar on the new roof. It costs more, but you gain safety, value, insurability and a roof that outlasts the panels. Always start with a professional survey.
Get my free assessment & quotes →The verdict
If there’s one message here, it’s this: solar on an asbestos roof is achievable, but not by drilling into the asbestos. Disturbing asbestos cement releases carcinogenic fibres — a genuine health risk tightly controlled by UK law — and these old roofs are frequently too fragile to carry panels safely anyway. So while it’s not strictly illegal, the honest, responsible advice is to deal with the asbestos first.
For most homeowners, the best route is to have the asbestos professionally removed and the roof replaced (with steel or composite), then install solar on the sound new roof. Yes, it adds cost — but you gain a safer home, better insurability and value, and a roof that outlasts the panels, all in one coordinated project. Over-sheeting or non-penetrative mounts may suit some roofs, and for a tricky garage roof, a ground-mounted system can sidestep the issue. Whatever the answer, it starts with a proper survey — so a free, no-obligation assessment from an MCS-certified installer is the sensible first move.
Important
Going Solar UK is an introduction service, not an installer or asbestos contractor. This guide is general 2026 information, not health, legal or asbestos-management advice. Asbestos is hazardous: any work that may disturb it is governed by the Control of Asbestos Regulations 2012 and must be assessed and handled by suitably qualified, licensed professionals. Never attempt to drill, cut, remove or work on an asbestos roof yourself. Always obtain a professional asbestos survey and MCS-certified installer advice for your specific property.
We may receive a commission when we introduce you to an installer, at no cost to you. Any contract for work is directly between you and the installer.