Solar Panel Removal and Refit
Taking an array down for roof work, extensions or repairs, and putting it back properly afterwards.
Why this is its own job
An array sitting over a roof that needs work has to come off, and the temptation is to treat that as a lifting exercise. It is not. It is a decommissioning, a storage problem, a coordination problem, and then a fresh installation.
Most of the difficulties we deal with come from arrays that were removed by someone who was not going to be putting them back.
Before anything comes off
We test and record the system while it is still working. Open-circuit voltages, string currents, insulation resistance, inverter status and recent generation data. If a fault appears after the refit, that record is the difference between diagnosing it and arguing about it.
Then the array is photographed in detail: panel positions relative to the tile courses, string configuration, which panel connects to which, where the cable enters the loft, and how it was clipped and routed. Older arrays rarely have a wiring diagram that matches reality.
Panels are labelled as they come off. A module refitted into a different string position can put a mismatched panel into a series circuit that was previously balanced.
Isolation and safety
Photovoltaic modules produce DC whenever there is light on them. There is no off switch on the array itself, which means an exposed connector on a scaffold is live on any daylight day.
We isolate at the inverter and at the array, lock off where other trades are working, and make disconnected connectors safe rather than leaving them loose. Where the array is being stored on site, panels go face down or on edge in a stillage, out of the way of a roofer’s feet and a wheelbarrow.
Storage
Panels are surprisingly robust in the plane of the glass and surprisingly vulnerable at the frame corners. Stacked flat on a hard surface, they crack. Leaned in a stack against a wall for six weeks, they bow.
We store them on edge in racks, supported at the frame, dry, and out of the way. Where a job runs long or the site cannot take them, they go off site instead. The storage arrangement is agreed before removal, not improvised on the day.
Coordination
The roofing programme drives everything. Removal has to happen after the scaffold is up and before the strip; refit has to happen after the covering is finished and before the scaffold comes down.
That last point matters more than anything else in this job. Refitting an array after the scaffold has been struck means paying for scaffolding twice. We talk to your roofer directly and fix the dates in advance.
Putting it back
The refit is a new installation on a new roof surface, and it is treated that way. New hooks or fixings into rafters, set out against the new batten gauge. New seals. Rails re-levelled — a new covering is rarely the same thickness as the old one. Cable re-clipped and re-routed, with any UV-degraded cable replaced rather than reused.
Then the system is recommissioned in full: strings tested against the pre-removal figures, insulation resistance measured, earthing verified, the inverter restarted and its settings confirmed, and monitoring checked over the following days to confirm the array is producing what it did before.
You get an Electrical Installation Certificate for the work, the before and after test results, and the photographic record. Your original MCS certificate for the installation stands; this is remedial work on an existing system rather than a new one.
Who this is for
- Full re-roofs and re-covering where the array is in the way
- Loft conversions, dormers and extensions altering the roof
- Leak investigation where the array covers the suspected area
- Repointing, chimney work or structural repairs beneath the array
- Houses being sold or bought where the array must be relocated
What is included, and what is not
Included as standard
- Pre-removal inspection and testing so the system condition is recorded before work starts
- Photographic record of the array layout, string configuration and cable routing
- Safe isolation of DC and AC, and lock-off where others will be working
- Panel removal, labelling and protected storage on site or off site
- Removal of rails, hooks and roof fixings, with fixing positions recorded
- Coordination with your roofer or builder over the programme
- Refit with new roof fixings and seals, and reinstated cable management
- Retesting, recommissioning and updated electrical certification
Not included
- The roofing, building or repair work itself
- Scaffolding, which is normally provided under the main roofing contract
- Replacement of panels found to be damaged before removal
- Storage beyond the agreed period
- Recertification under MCS, which applies to the original installation
Anything in this column that your property turns out to need is identified at survey and priced in the written quotation, not raised later as a variation.
Timescale
Removal is usually half a day to a day; refit is similar, with the gap set by the roofing programme.
What affects the cost
| Factor | Why it matters |
|---|---|
| Number of panels and the array configuration | Assessed at survey and reflected in the fixed written quotation. |
| Whether removal and refit are separate visits or a single continuous programme | Assessed at survey and reflected in the fixed written quotation. |
| Storage requirements and whether panels can stay on site securely | Assessed at survey and reflected in the fixed written quotation. |
| Condition of the existing fixings and whether the mounting system is reusable | Assessed at survey and reflected in the fixed written quotation. |
| Whether the layout changes on refit, which means a new set-out | Assessed at survey and reflected in the fixed written quotation. |
| Age of the system and availability of matching components | Assessed at survey and reflected in the fixed written quotation. |
New to this? Start with how domestic solar works and what battery storage changes, then come back to the detail.
Common questions
Can my roofer just take the panels off?
They can lift the modules, but the DC side has to be isolated and made safe by someone competent to do it, and it has to be tested and recommissioned before it goes back into service. An array left disconnected on a scaffold with live DC connectors is a genuine hazard. In practice the sensible arrangement is that we handle the electrical work and the array, and the roofer handles the roof.
Will the panels go back in the same place?
Usually, and it is simplest if they do. Where the roof geometry has changed — a new dormer, an extension, a rooflight — the array is set out again against the new rafter positions and the new obstructions. That may mean a different panel count, and where it does we tell you before the refit rather than on the day.
Are the old fixings reused?
The rails and clamps usually are, if they are sound. The roof fixings themselves are not. Hooks and seals that have been weathered into a covering for a decade have done their job, and refitting a stripped roof with used fixings is a false economy. New fixings go in against the new battens and covering.
What if a panel breaks during removal?
It happens occasionally, particularly with older modules whose frames and connectors have become brittle. We handle panels carefully and store them upright and protected, but we will not pretend the risk is zero. If a module cannot be refitted, we explain the matching problem and the options before ordering anything.
Related services
- Solar panel repairsFault diagnosis and repair on arrays that have stopped working, or never quite worked properly.
- Solar panel installationSurvey, design, roof works, electrical works and commissioning for a domestic solar PV system.
- In-roof solarPanels integrated into the roof covering rather than mounted above it, with the weathering detailed properly.
- Solar panel maintenanceScheduled servicing of the whole system — array, fixings, DC side, inverter and monitoring — not just the glass.
The technology behind it
- Mounting systemsHooks, rails, clamps and fixings — the part of the installation that decides whether the roof stays watertight.
- Solar panelsWhat a domestic solar panel is, how it is built, and which specifications on the datasheet actually matter.
- InvertersWhat the inverter does, how MPPT works, and how the four architectures compare honestly against each other.
Property and roof guides
- Slate roofsNatural and fibre cement slate — brittle, holed rather than nibbed, and unforgiving of the wrong fixing method.
- Tile roofsConcrete interlocking, clay pantile and plain tile — the most common covering we work on, and the most forgiving.
- Victorian terracesNarrow slate slopes, party walls, rear back-additions and scaffolding through a shared alley — terraced solar on its own terms.
- Pre-1920 homesSolar on Victorian and Edwardian houses: brittle coverings, irregular rafters, ageing electrics and planning sensitivity.
Further reading
- Scaffolding and access for solarWhy scaffolding is needed, what affects the cost and duration, and what to expect around your property.
- What happens during a solar surveyWhat a surveyor measures, inspects and asks about, and why a quotation without a survey is unreliable.
- Solar panel degradation and lifespanHow panel output declines gradually over time, which components have shorter lives, and what determines how long a system lasts.
Where we work
Information reviewed on 2026-08-23.
Book a free design and quotation
Tell us about the property and we will arrange a survey, then issue a written design and fixed quotation before any work is agreed.
Enquire about solar panel removal and refit
No obligation. We will review the details, come back to arrange the next step, and issue a written design and fixed quotation before anything is agreed.
Prefer to talk? Call 0118 227 7444.