To Mesh Or Not To Mesh? The Pros and Cons of Solar Panel Bird Meshing
Published 11 June 2026
Bird Mesh - Added Cost or Money Saver?
On a recent installation job in Norfolk, we noticed the customer's neighbouring property didn't have bird mesh around their solar array, but it did have 4 pigeons eagerly eyeing up the space! When we spoke to them, they explained they felt it had been offered as an 'add -on' and felt like a 'nice-to-have', they hadn't fully understood the consequences.
What Exactly is Bird Mesh?
Simply put, bird mesh (also called bird-proofing) is a protective barrier designed to stop birds from nesting underneath your solar panels.
It is made from heavy-duty, weather-resistant wire - usually black nylon-coated galvanised steel - and is installed vertically around the entire outer perimeter of your solar array. It plugs the 10cm to 15cm gap between the top of your roof tiles and the bottom of the panels.
Why Does Bird Mesh Matter?
Pigeons and other birds love solar panels. The gap between your panels and your roof tiles is warm, sheltered from the elements, and completely safe from predators - making it a very attractive nesting ground.
In Norfolk and across East Anglia, a few specific bird species are notorious for causing headaches for solar panel owners. Because Norfolk features a mix of busy market towns, rural areas, and a long stretch of coastline, the challenges vary depending on where you live. The main ones to watch out for include:
- Feral Pigeons (Year-Round Problem). By far the most common problem causing birds in towns like Norwich, King’s Lynn, and Wymondham. Unlike many species, pigeons breed and nest all year round. This means their droppings (guano), which are highly acidic, can build up and corrode wiring and components.
- Herring Gulls & Lesser Black-Backed Gulls (Coastal Threat). If your property is anywhere near coastal or Broads areas like Cromer, Sheringham, Great Yarmouth, or Lowestoft, gulls are a major consideration. They love nesting on flat or pitched roofs and will happily use your solar array as a sheltered base and return year after year. Their bulky nests can completely block the ventilation gap under the panels (causing overheating).
- Starlings & House Sparrows (The Small Invaders). These small birds can squeeze into very tight gaps that larger birds can't fit through. On their own they are not the biggest of threats, but because they move in flocks, there can be a lot of them nesting together. They pack tight nesting materials—like straw, feathers, and dry grass—directly into the gaps behind the panels. This creates an insulation layer that traps heat, putting the system at a higher risk for electrical faults or wire damage from pecking.
At Arc Line Design, we always discuss bird mesh (or bird proofing) with our customers during the design phase. To help you decide what’s best for your roof, here is an honest look at the pros and cons of installing bird mesh.
The Pros: Why Most Homeowners Choose Mesh
- Avoid Costly DamageBirds are not just looking for somewhere safe to shelter; they're looking for a safe nesting ground. Over time, their nesting materials (twigs, straw, and other materials) can build up under the array, reducing airflow. Birds can also damage the electrical wiring underneath through their constant pecking, leading to system faults or, in rare cases, fire hazards.
- System EfficiencyBy stopping birds from seeing your array as a potential nesting ground from day 1, you'll reduce the number of birds on your roof, and subsequently the droppings that land on top of the glass. Heavy soiling on solar panels creates "shading," which can significantly drop your energy generation. Whilst keeping the space under your array free of obstructions keeps airflow moving and improves the efficiency of your panels.
- Avoid Retrofit complicationsAdding bird mesh later can be extremely costly, especially where scaffolding is needed. You may also encounter legal issues if birds are actively nesting, which will prevent you from disturbing the nest. Where it is possible to retrofit, the area will need to be humanely cleared and thoroughly cleaned before the mesh is installed.
