Solar panel bird proofing stops birds nesting in the gap under your array. Pigeons like that sheltered space. Their nests and droppings can cause real damage, so it pays to plan for them before you sign a quote.
Why birds nest under solar panels
Panels sit above the roof covering, which leaves a gap that birds can use. Which? says roof-integrated panels leave no such gaps, so the gap is the problem to solve.
The damage is not just untidy. A Which? expert warns that birds and squirrels have the potential to cause significant damage to the connectors and wiring. The same expert says nesting material can be combustible and present a serious fire risk.
Droppings matter too, because heavy build-up on individual panels can reduce generation, according to Which? It lists bird droppings among the causes of dirty panels. For cleaning advice, see our guide to how to keep panels clean and safe.
What the law says about nests
The law protects all wild birds, their eggs and their nests. Natural England and Defra guidance for England says you are breaking the law if you intentionally take, damage or destroy a nest while it is being used or built.
The penalty is serious. The guidance says you could get an unlimited fine and up to six months in prison for each offence.
So do not clear a nest that birds are using. The guidance also says you can often avoid harm by timing work outside the breeding season and by using methods that deter but do not harm birds. If you are unsure, ask Natural England before you start.
Bird proofing options for solar panels
Bird proofing works by closing off the gap, for instance with mesh around the edge of the array. The detail of the fixing matters more than the product name, though.
A Which? expert says panels should not be drilled and fixings should not be screwed into the frame. Doing so compromises the panel warranty, so ask your installer how the mesh attaches and get the answer in writing.
Another option is roof-integrated panels. Which? says these sit within the roof itself and leave no gaps for birds or rodents. However, they can be complex to retrofit, so they suit new roofs better than existing ones.
Be realistic about what any product can do. The Which? expert also cautions that most bird or pest protection will not deter a determined squirrel or jackdaw. Treat it as pigeon protection and check the array each year.
Fit it at installation, not later
Timing changes the price. A mesh job done during the install happens while the crew is already on the roof, whereas a job done years later needs a fresh visit.
A Which? expert says wildlife protection at installation is significantly cheaper than retrofitting. A later job can mean new access to the roof. Our guide to what scaffolding adds to a solar quote shows why access is a real cost.
The MCS installation standard already points this way. Specifically, it says your installer must advise on extra measures to protect the system from fauna, and it gives nesting birdlife as an example. So expect your installer to raise the topic, and ask if they do not.
Bird damage can also affect your inverter choice. Which? notes that on a string system, a failed or shaded panel can affect the whole system. Read string inverters versus microinverters and optimisers before you decide, because on a string system one failed panel can affect the whole system.
Add bird proofing to your quote checklist
Some quotes may skip this item entirely. That is not always a red flag, but it does mean you must ask. Our guide to spotting solar quote red flags covers other gaps worth checking at the same time.
Put bird proofing on the list when you compare quotes. First, ask whether the quote includes it or prices it as an extra. Then ask how it fixes to the array and whether it leaves the frames untouched.
Pricing differs between installers and areas, so compare at least three written quotes. You can see how installers price jobs in London and what homeowners in the North East are quoted to get a feel for the spread. Our solar panel cost guide explains the main line items, and comparing solar quotes side by side shows how to line them up.
Also ask how the installer treats the extra for tax. The rules on VAT and grants change, so check our guide to VAT and grants on solar panels before you assume anything.
Finally, think ahead. If you plan to add storage later, read how to add a battery to existing panels. Fitting everything in one visit can save a second round of roof work.
Questions to ask your installer
- Does this quote include bird proofing, and what does it cover?
- How does the mesh fix to the array, and does it avoid drilling the frames?
- Will you confirm in writing that the panel warranty stays valid?
- What happens if birds nest before the mesh goes on?
- Who pays to fix wiring damage caused by nesting?
Prices vary, so get written quotes and compare them line by line. Prices and rules can change, and this article is general information, not legal advice. When you are ready, you can request quotes for your home or test a quote with the free checker on the home page.