Wymondham Roofers handles solar panel installation across Norwich and the surrounding area, managing everything from the initial roof survey through to final connection.
Call any time. Calls are answered day and night and passed straight to our roofers.
Before a single panel goes up, the roof underneath needs to be honest with you. Solar panels are typically fixed in place for 20 to 25 years, and any roofing problem that exists on the day of installation will still be there - usually worse - a decade later. Getting this right at the start avoids expensive remedial work down the line.
A proper pre-installation roof survey checks the condition of tiles or slates, the state of the battens underneath, whether the ridge and verge details are sound, and whether the roof structure can take the additional load. Panels and their mounting frames add weight. On most standard pitched roofs this is not a problem, but it is something that should be confirmed rather than assumed.
If you are considering solar for your Norwich home, walk around the outside of the house and look at the roof before you speak to any installer. A few visible signs can tell you a lot about what you are dealing with.
None of these issues mean solar is off the table. They mean the roof needs attention first, and that is a conversation to have openly with whoever is doing the installation.
Solar panels do not cause roof damage by themselves. What causes problems is cutting corners during installation or fitting panels to a roof that was already struggling.
Bracket penetrations are the main risk point. When a mounting bracket is fixed through a tile or into the rafter below, the seal around that fixing needs to be done properly. Butyl tape, purpose-made hooks or integrated tile systems all handle this differently. A poorly sealed penetration lets water track down the rafter, and because panels sit directly over the area, the leak is hidden until it has already caused significant damage inside.
Thermal cycling is another factor. Roofs expand and contract slightly with temperature changes. Panels and brackets that are rigidly fixed without allowing for this movement can put stress on tiles around the mounts, eventually cracking them. This is more common on older natural slate roofs where tiles are thinner and more brittle.
Poor cable management is a less obvious but real issue. DC cables from the panels run down to the inverter inside the roof space or loft. If cables are left loose, they can chafe against tiles or battens over time, and in worst cases create a fire risk. Cables should be clipped neatly, kept away from sharp edges, and routed with UV-resistant conduit where they pass outside.
A proper installation is not just fitting panels and connecting wires. The process for a typical domestic property runs roughly as follows.
Roof survey and structural check - carried out before anything is quoted as final. The survey confirms tile type, roof pitch, rafter spacing, and any remedial work required. South-facing or south-west-facing slopes will generate the most energy, but east-west splits can still work well for properties where the south face has obstructions.
Scaffold erection - required for safe working at height on most two-storey properties. This is a non-negotiable part of a safe job and the cost should be included in any quote you receive.
Mounting system installation - rails or brackets are fixed to the rafters. The method varies depending on the tile type. Concrete tiles, clay tiles, natural slate and flat-profile tiles all have different fixing solutions, and the right one matters.
Panel fitting - panels clip or slide onto the rail system and are mechanically secured. Connections between panels are made at this stage.
Inverter and cable installation - the inverter converts DC electricity from the panels to AC for use in the home. It is usually fitted in the loft or on an inside wall. Cable routes are planned to be neat and safe.
Electrical connection and testing - this part must be carried out by a registered electrician. The system is connected to the consumer unit, tested and commissioned. You should receive documentation confirming the installation has been tested to current standards.
DNO notification - for systems over a certain size, your Distribution Network Operator needs to be notified. For most domestic installs this is handled as part of the process, but ask the installer to confirm it is included.
For a standard 4kW system on a domestic property, typical UK installation costs currently run between £5,000 and £8,000 including VAT, scaffold and all electrical work. Larger 6kW systems for bigger homes can run from £7,000 to £10,000. These are genuine market ranges and will vary based on panel brand, inverter type, roof complexity and access.
Battery storage is separate. A home battery system that stores energy generated during the day for use at night typically adds £2,500 to £5,000 on top of the panel installation cost. It is not essential, but it does increase the proportion of solar energy you actually use rather than export to the grid.
VAT on solar panel installations for domestic properties in the UK is currently charged at 0%, which keeps costs lower than they were before the rate change. Always confirm what is and is not included in any quote - scaffolding, electrical sign-off and DNO notification should all be itemised.
Standard photovoltaic (PV) panels generate electricity. That electricity can power anything in your home, including an immersion heater. A device called a solar diverter (sometimes called a power diverter or immersion controller) can be wired into the system to send surplus electricity to your hot water cylinder automatically rather than exporting it to the grid at a low rate. For homes with a conventional hot water tank, this is a practical and relatively inexpensive addition.
Heat pumps and solar panels are increasingly being combined. An air source heat pump uses electricity to produce heat efficiently - typically generating around 3kWh of heat for every 1kWh of electricity it consumes. Running a heat pump partly or fully from solar generation makes sense as an integrated approach. If this is something you are planning, mention it at the survey stage so cable sizing and inverter capacity can be considered alongside the heat pump's electrical requirements.
Solar thermal panels, which heat water directly using the sun's heat rather than generating electricity, are a different product entirely and are not part of a standard PV installation. They require separate plumbing connections and a compatible hot water cylinder. The two technologies can coexist on the same roof but need separate assessment.
Whether you use Wymondham Roofers or anybody else, these are the questions worth asking before you agree to any installation.
Getting clear answers to these questions before you sign anything is the best protection against problems later.
Most solar installation businesses come from an electrical background. That means the electrical side is handled well, but the roofing assessment can be cursory. When assessing a roof for solar, it helps to have someone with roofing knowledge look at it, since they can check for problems that would not show up on a satellite image and that a pure electrician might not recognise.
Wymondham Roofers works across Norwich and nearby areas including Cringleford, Hellesdon, Drayton, Bowthorpe, Taverham, Postwick, Mattishall, Ashwellthorpe and further afield toward Watton, Neaton and Garvestone. If you are in the Norwich area and want a solar installation backed by a proper roofing assessment, call us to arrange a roof survey and discuss what your property needs.
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Call any time. Calls are answered day and night and passed straight to our roofers.
