Solar Panels on a Thatched or Unusual Roof
Thatch is the one roof where the honest answer is often “not directly” — but that rarely means no solar at all. Here’s the real picture for thatched, listed and other awkward roofs.
The short answer
You generally can’t (and shouldn’t) mount solar panels directly on a thatched roof. Thatch is highly combustible, and fire-safety guidance recommends solar goes on non-combustible roofs — so panels on thatch raise serious fire-risk, insurance and often listed-building issues. Most installers won’t fit directly onto thatch.
But here’s the reassuring part: that rarely means no solar at all. The standard solution is to put panels somewhere else — a ground-mounted array, or a non-thatched garage, barn or outbuilding roof — which sidesteps the fire and insurance problems entirely while still powering your home. And most other “unusual” roofs (slate, flat, metal, listed) are workable with the right approach. Below, the honest detail on each.
What this guide covers
Most roofs in the UK can take solar with the right mounting — but a few genuinely awkward cases deserve an honest answer rather than a sales pitch. Thatch is the big one, and we’ll be straight about it. The good news is that “your main roof won’t work” almost never means “you can’t go solar” — there’s usually a sensible route. Here’s the full, honest rundown.
Thatched roofs: the honest reality
Let’s be direct, because this is one case where overselling would be wrong: solar panels are not normally fitted directly onto thatched roofs, and most reputable installers will decline to do so. Three reasons stack up:
- Fire risk (the big one). Thatch is highly combustible. Solar installations carry a small but real risk of electrical fire (from faults or DC arcing), and industry fire-safety guidance recommends panels go on non-combustible roofs wherever practicable. Putting a potential ignition source directly onto highly flammable thatch is considered an unacceptable risk.
- Insurance. Thatched properties are already specialist and expensive to insure. Adding roof-mounted solar to thatch makes cover very difficult or prohibitively costly to obtain — insurers view the combination as high-risk.
- Listed / conservation status. Many thatched homes are listed or in conservation areas, adding planning restrictions on top of the fire and insurance issues.
The honest bottom line on thatch
Direct roof mounting on thatch is usually impractical and inadvisable — and any installer who cheerfully offers to bolt panels straight onto your thatch without flagging these issues is one to avoid. But this doesn’t mean a thatched-home owner can’t benefit from solar. It just means the panels go somewhere other than the thatch — which, as it happens, often works out just as well. Here’s how.
The solution: where to put panels instead
If your main house is thatched, the practical (and safe) route is to mount solar off the thatch:
| Alternative | Why it works |
|---|---|
| Ground-mounted array | Best option — no roof fire/load/planning issues, generates just like a roof system |
| Garage / outbuilding roof | If it’s tiled/slate (non-thatch), a normal install |
| Barn or annexe roof | Common on rural thatched properties with land |
| Carport / new structure | Purpose-built mounting away from the house |
A ground-mounted system is usually the star here: it sits on frames in your garden or land, generates exactly like a roof array, and completely avoids the thatch fire, insurance and load concerns. For a rural thatched property with a bit of space, it’s often the ideal answer — and it can even be sized generously and angled optimally, which a roof can’t always manage. If you’ve a non-thatched outbuilding roof instead, that’s a straightforward standard install. The key message: having a thatched house rarely rules out solar — it just moves the panels.
Listed buildings & conservation areas
Thatched or not, if your home is listed or in a conservation area, solar needs extra care — but isn’t necessarily off the table:
- Listed buildings typically require listed building consent from your local planning authority. Approval often hinges on panels not being visible from the street or not harming the building’s character — so a rear roof slope, or a ground-mounted array, is far more likely to be approved.
- Conservation areas have permitted-development restrictions; panels facing a highway often need planning permission.
- Talk to your conservation officer first — they’ll tell you what’s likely to be approved before you spend on design.
Many owners of protected properties go for ground-mounted solar or panels on an unlisted outbuilding, precisely to avoid altering the protected structure — the same solution that works for thatch.
Slate, flat, metal & other unusual roofs
Beyond thatch, most “unusual” roofs are perfectly workable — they just need the right mounting and an experienced installer:
| Roof type | Solar-friendly? | What’s needed |
|---|---|---|
| Slate | Yes | Slate hooks / flashings; brittle, so needs a specialist |
| Flat roof | Yes | Tilted ballasted or fixed frames (often ideal) |
| Metal / corrugated | Yes | Clamp-on fixings; often quick & low-cost |
| Clay / concrete tile | Yes | Standard install |
| Wood shingle | Caution | Combustible — fire assessment needed |
| Asbestos | Replace first | Hazardous to disturb — new roof needed |
Slate is brittle so needs slate hooks and a careful hand, but it’s common and doable. Flat roofs are genuinely great for solar — panels go on tilted frames angled for best output. Metal roofs often allow quick clamp-on fixings. The theme: with the right installer, these are all fine — it’s mainly thatch, wood shingle and asbestos that raise genuine flags (combustibility or hazard). If you’re unsure your roof can take the weight or the fixings, our guide on how many panels fit your roof and a proper survey will settle it.
Roofs that need work before solar
A few roofs aren’t unsuitable as such, but need attention first:
- Asbestos roofs — usually need replacing before solar, as disturbing asbestos is hazardous and specialist removal is required.
- Fragile or damaged roofs — should be repaired or reinforced first; there’s no sense mounting a 25-year system on a roof needing replacement soon.
- Structurally weak roofs — may need strengthening to bear the (modest) panel load; a surveyor confirms this.
- Heavily shaded roofs — not unsuitable structurally, but a poor orientation or heavy shading may point you toward a ground-mount for better output.
Unusual roofs: the honest summary
✓ Usually fine
- Slate (with specialist fixings)
- Flat roofs (often ideal, tilted frames)
- Metal / corrugated (clamp-on)
- Clay & concrete tile (standard)
- Listed — often, on a hidden slope or ground
✗ Genuine flags
- Thatch — fire & insurance; use ground-mount
- Wood shingle — combustible, needs assessment
- Asbestos — replace before solar
- Fragile/weak roofs — repair/reinforce first
- Listed street-facing — may be refused
Frequently asked questions
Can you put solar panels on a thatched roof?
Not directly, in most cases — thatch is highly combustible, and fire-safety guidance recommends solar on non-combustible roofs, so it raises serious fire, insurance and often listed-building issues. The solution is to mount panels elsewhere — a ground-mounted array or a non-thatched outbuilding roof — which avoids the problems while still powering your home.
Why can’t you put solar on thatch?
Mainly fire risk — solar can be an ignition source (faults/arcing), and thatch is highly flammable, so guidance recommends non-combustible roofs. Add difficult, costly insurance and frequent listed/conservation status, and direct mounting is usually impractical.
Can you have solar on a listed building?
Sometimes, with listed building consent. Approval often depends on panels not being visible from the street or harming the building’s character — so a rear slope or ground-mount is more likely approved. Many owners choose ground-mounted or outbuilding solar. Check with your conservation officer first.
What roofs are unsuitable for solar?
Thatch is the main genuinely unsuitable type (fire/insurance). Asbestos roofs need replacing first, and fragile or weak roofs need repair/reinforcement. Slate, flat, metal and tile roofs are all workable with the right mounting.
Can you put solar on a slate roof?
Yes — but it needs a specialist. Slate is brittle, so installers use slate hooks or flashings rather than drilling through. It’s a more skilled, slightly costlier job, but common and entirely doable with an experienced installer.
What if my roof is unsuitable?
Ground-mounted solar is usually the best alternative — frames in your garden generating just like a roof system, avoiding roof fire, load and planning issues. Outbuilding, garage or barn roofs also work. If you have suitable roof or ground space, there’s usually a way to go solar.
Thatch is the exception — but ground-mount saves the day
The bottom line: Thatch is the one roof where solar usually can’t go directly — fire risk and insurance make it impractical, and honest installers will say so. But a ground-mounted array or an outbuilding roof almost always gives thatched and listed homes a route to solar anyway. Most other “unusual” roofs — slate, flat, metal — are perfectly workable with the right installer.
Get my free roof advice →The verdict
Thatched roofs are the honest exception in the solar world: you generally can’t and shouldn’t mount panels directly on thatch, because the fire risk, insurance difficulty and frequent listed status stack up against it. Any installer who ignores that is one to steer clear of. But — and this is the important part — a thatched or listed home is rarely shut out of solar entirely. A ground-mounted array, or panels on a non-thatched outbuilding, usually provides an excellent route, often generating just as well as a roof system.
For most other unusual roofs — slate, flat, metal, tile — solar is entirely doable with the right mounting and an experienced installer; it’s mainly thatch, wood shingle and asbestos that raise real flags. The sensible next step for any tricky roof is an honest assessment: a good installer will tell you plainly what’s possible and quote the best option, whether that’s your roof or your garden. A free, no-obligation quote gets you exactly that.
Important
Going Solar UK is an introduction service, not an installer. Guidance here on thatched, listed and unusual roofs is general 2026 information and varies by property, insurer and local planning authority — fire safety, insurance and listed building rules are specific to your circumstances. Always consult an MCS-certified installer, your insurer, and (for listed or conservation properties) your local conservation officer before proceeding. Never mount solar on a combustible roof without professional fire-safety assessment.
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.