Solar panels on a slate or tenement roof in Edinburgh

The short answer: yes, you can fit solar panels on a slate or tenement roof in Edinburgh — but the roof underneath has to be right first. That means sound slate, fixings that aren’t on their way out, and every panel bracket properly flashed so it never leaks. Check the roof’s condition before you spend a penny on panels, and remember that listed buildings and conservation areas have visibility rules that decide where panels can go. Get the roofing right and a slate roof will carry solar for decades.

Solar makes a lot of sense on an Edinburgh home, slate roof or not. But most of the conversation is about panels, inverters and payback — and almost none of it is about the thing the panels are bolted to. We’re a roofing firm, so this guide comes at it from the roof up: what a slate or tenement roof needs before solar goes on, how the fixings and flashing should be done, and where Edinburgh’s heritage rules come into it. We work alongside solar installers and handle the roofing side; we’ll be honest about that throughout.

Can you put solar on slate? Yes — with the right fixings

Slate is one of the better roofs to put solar on, because it’s durable and it’s designed to be lifted and re-dressed. You don’t nail panels through slate. Instead, a roofer lifts the relevant slates, fits slate hooks or roof anchors to the battens or rafters beneath, and re-lays the slate around them. The mounting rails then bolt to those anchors, and the panels clamp to the rails.

The part that separates a good job from a future leak is the detailing around every penetration. Each anchor breaks the watertight plane of the roof, so the slate around it has to be re-dressed, and on some fixings a lead or proprietary flashing soaker is needed so water still runs off cleanly. Get that wrong and you’ve put 30+ small leak points into a roof that worked perfectly before.

This is the same skill set as any quality slate and slating work — lifting, fixing and re-dressing slate without compromising how the roof sheds water.

Check the roof first — it has to outlast the panels

Solar panels are typically warranted for around 25 years. So the obvious question is: will the roof last that long too? Because if it won’t, you’ll be paying to take the panels down, re-roof, and put them back up again — which is a lot more than doing it in the right order.

Before any solar quote, a roof wants checking for:

• Fixings (“nail sickness”). Old iron nails corrode and let slates slip long before the slate itself fails. If the nails are going, the roof needs attention before panels add load and foot traffic.
• Slate condition. Sound slate can carry solar for decades. Delaminating or flaking slate can’t, and shouldn’t have panels laid over the problem.
• Lead and flashings. Tired lead around chimneys and valleys should be renewed while the scaffold’s up, not left to fail under a covered roof.
• The timbers beneath. Battens and sarking need to be sound enough to carry the anchors and the extra load.

Our guide to how long a slate roof lasts in Scotland covers the warning signs in detail. The short version: if the roof’s near the end of its life, don’t put solar on it — re-roof first.

On-roof vs integrated mounting

There are two ways to mount panels, and the choice matters more on a slate or period roof than on a modern tile one.

	On-roof (on-top)	Integrated (in-roof)
How it sits	On rails above the slate, on hooks beneath	Replaces a section of slate, flush in the roof plane
Look	Panels stand proud of the roof	Flatter, neater, sits within the slate
Conservation fit	Harder where visibility is restricted	Often preferred for heritage settings
Roofing demand	Careful hook flashing	More demanding flashing and slate weathering-in
Cost	Usually lower	Usually higher

On-roof is the common, lower-cost option and works well on hidden or rear slopes. Integrated sits flush and looks far tidier, which makes it the better choice on a prominent slate roof or in a conservation setting — but it asks more of the roofer, because the surrounding slate has to weather into the panel array cleanly.

Weight, penetrations and getting the detailing right

A few practical roofing points that get overlooked:

• Weight. Panels and framing add load (roughly 15–25 kg/m² depending on the system). On most sound roofs that’s fine, but it’s worth confirming the timbers and structure are up to it, especially on older tenement roofs.
• Penetrations done once. Every anchor is a hole in your weatherproofing. They should be set out to land on slate courses sensibly, flashed correctly, and never bodged in around an awkward chimney or valley.
• Lead detailing. Where panels meet chimneys, abutments or valleys, traditional leadwork keeps the junctions watertight — the same detailing that keeps any Edinburgh roof dry.
• Access for both trades. The roofer and the solar installer both need safe access. Coordinating one scaffold for both saves cost and hassle.

Doing a re-roof and solar together

If your roof is due anyway, fitting solar at the same time as a re-roof is usually the smartest sequence:

1. One scaffold, two jobs. Scaffolding is a big chunk of any roof cost, so sharing it across the re-roof and the solar install saves real money.
2. Fixings built in. The roofer can position anchors and flashing as the slate goes on, rather than retrofitting them into a finished roof.
3. No wasted work. You’re not drilling brackets into a roof you’ll replace in a few years.
4. Clean handover. With the roof sound and prepped, the solar installer fits the rails and panels onto a roof that’s ready for them.

We’ll do the roofing and heritage detailing, then liaise with your chosen solar installer so the trades dovetail. See roofing costs in Edinburgh for what the re-roof side typically runs to.

Conservation and listed building rules in Edinburgh

This is where Edinburgh gets stricter than most places, and it’s better to know up front. Much of the city sits in a conservation area, and there are many listed buildings, so panel placement isn’t a free-for-all.

In broad terms:

• Rear and hidden slopes are far easier — panels you can’t see from the street usually face fewer objections.
• Street-visible and front-facing slopes on a conservation-area or listed property often need consent, and may be refused if they harm the building’s character.
• Listed buildings generally need listed building consent for solar, and the bar is higher.
• Integrated, low-profile, all-black panels sit more sympathetically and stand a better chance where visibility is a concern.

Always check with the City of Edinburgh Council before committing, and read our guide to roof planning permission in Scotland for how the rules work. Our heritage roofing guide covers the wider question of doing right by a period roof.

Why the roofing matters as much as the panels

It’s easy to treat the roof as a backdrop for the panels. It isn’t. The panels generate the power, but the roof is what keeps the weather out — and a single badly-fitted bracket, an unflashed penetration or a slipped slate hidden under an array can let water into the timbers and quietly undo the whole investment. Fixing a leak under a panel array is awkward and expensive, because the panels usually have to come off first.

That’s the case for getting the roofing right before the panels go up: sound slate, fixings that’ll last, lead detailing that doesn’t leak, and heritage work that keeps an Edinburgh building looking as it should. We handle that half, and work alongside your solar installer for the rest.

Key takeaways

• Solar works on slate — with proper hooks, flashing and a sound roof beneath.
• Check the roof’s condition before you buy panels; it needs to outlast them.
• Integrated mounting suits heritage and conservation roofs better than on-roof.
• A re-roof plus solar together shares the scaffold and avoids wasted work.
• Conservation and listed rules in Edinburgh restrict visible panels — check first.

Thinking about solar on a slate or tenement roof? Get the roof checked before you commit. Book a free roof survey or call 0800 234 3243 and we’ll tell you honestly what the roof needs first.