Roof leak? We respond the same day. Call 06 84 76 29 46

/
/
Roof renovation
/
Solar panels on your roof: have the roof checked first
Roof renovation
5 min read

Solar panels on your roof: have the roof checked first

Portrait of an Astrodak roofer at work on a roof
Fouad · Owner of Astrodak Service
Updated on 6 October 2026
House with a red tiled roof and scaffolding with an Astrodak Service banner during roof work, with solar panels on the roof
Renewing a roof under existing solar panels means extra work.

Fitting solar panels is an investment for many years. If the roof underneath is already getting on, you may have to have the panels removed in a few years to renew the roof. Removing and refitting them is work you could have avoided.

These are the four points I look at before panels go on.

Four points I check in advance

1

The condition of the roof covering. Porous tiles, mossy areas or a bitumen roof with blisters and cracks are better repaired first. Also read about the lifespan of roof tiles.

2

Leaks and damp patches. An existing leak does not go away because there are panels on top. Seeing damp patches along the ridge? Then have the cause found first.

3

The supporting structure. Panels and their fixings add weight and penetrations. The battens and the roof boarding must be sound.

4

The penetrations and the ridge finish. Wherever fixings go through the roof, everything must seal watertight. Loose ridge tiles are best dealt with first, see loose ridge tiles.

“Put panels on a roof that is almost due for replacement, and you pay twice later.”

Fouad, owner of Astrodak Service

When to renovate first and when not to

If your roof is still sound and will last for years to come, you can simply have the panels fitted. I check that during a free inspection.

If the tiles are porous, there is already a leak or the insulation is due for replacement, it is smarter to do that before the panels. Combining is also possible: I renew the roof and the installers fit the panels afterwards.

Sound roof
good for years
panels can go on
Old or leaking roof
renovate first
then the panels
Free roof inspection

First have someone check what your roof can take

I check your roof before the panels arrive and tell you honestly whether renovation is needed or whether it can wait. You get a fixed price up front.

What happens if you fit panels first

1

Extra work later. Panels have to come off the roof for a renovation and then go back on.

2

A leak under the panels. Hard to find and hard to repair.

3

Higher costs. You pay for removing and refitting, on top of the roof work.

4

Inconvenience. As long as the roof is open, the panels produce nothing.

What you can do about it

Request a roof inspection before you sign a quote for panels. Then you know what the roof can take.

Have the installer and the roofer coordinate with each other, so the penetrations seal properly. If the roof is in poor condition, also read repair or replace the roof.

What you can do yourself

Look from the ground: missing tiles, moss and a sagging roof slope can be seen without climbing. See checking the roof after a storm for a list to go through.

Ask your installer what weight and which fixings he uses, and keep that information for your roofer.

Frequently asked questions about solar panels and the roof

Yes, that is sensible. Panels stay on for many years, so the roof underneath needs to last just as long.

Then the panels have to come off first and go back on afterwards. That means extra work and time, so it is smarter to get the roof in order beforehand.

They can if the penetrations have not been sealed properly. Good installation and a check of the connections prevent that.

My colleagues and I come round for a free roof inspection. Afterwards you hear what is needed and you get a fixed price up front.

Request a free roof inspection

Leave your details and I will get in touch the same day to schedule a free inspection.
100% no obligation
·
Same-day response
Portrait of an Astrodak roofer at work on a roof
Talk to the roofer directly
Fouad · your single point of contact
Guarantees
Certified Roofer quality mark, checked and qualified, with a green tick
VCA certified logo
Pinnen Ja Graag logo (card payments welcome)
Google G logo
5.0 from 50 reviews

More from the knowledge base

Aerial photo of a house with a red tiled roof and scaffolding with an Astrodak Service banner during roofing work
Roof renovation

What is the best time of year for roof work?

6 October 2026 ·
Astrodak roofer working on a roof edge with lead work above a brick wall
Roof renovation

Permits for roof work: when do you need one?

21 August 2026 ·
Roofer in an Astrodak Service shirt on a pitched roof under construction, with stacks of roof tiles on the tiling battens
Roof renovation

Recognising asbestos on a roof and what applies then

21 August 2026 ·
Menu