Solar panels are one of the most popular ways to generate energy at home, but how effective they are depends on your roof type. The size, shape and direction may all have an impact, as do the materials.
Tiled, sloping roofs
These are the most common roofs for solar panel installers Weston such as https://redbridgeandsons.co.uk/solar-pv-panels/solar-panel-installers-weston. There are three ways solar panels can be mounted on these roofs.
Asphalt shingles
Standard mounting systems can also be used on composite roofs with asphalt shingles.
Flat roofs
Flat roofs, usually made of tar or gravel, need special mounting systems so solar panels can be installed at the correct angle. This may require planning permission.
Listed buildings and conservation areas
Most domestic solar panel installations do not need planning permission. But if your building or neighbourhood has any kind of protected status, you may need to apply.
Standing seam metal roofs
Installation is particularly simple as you do not need to drill; you can just clamp the frames. A similar method can be used for corrugated roofs.
Green roofs
You can install solar panels on a green roof, but only if you do it before planting any foliage. Once the grass or plants start growing, they help weigh the panels down and keep them ventilated.
Thatched roofs
Not only are there currently no mounting systems designed for thatched roofs, but the flammable nature of the thatch would make installing any electrical system highly dangerous.
Asbestos
Not all installers will be willing to work around asbestos, but rafters can sometimes be used to install the panels above the surface without disruption.
Most roofs are suitable for solar panels, with the right equipment and an experienced installer. There are a few exceptions, like thatch, so ensure you consult a professional first.
Related: How to choose a solar battery
Keeping panels clean on any roof
Whatever roof they sit on, panels generate most when nothing blocks the sun. Fitting them at the right tilt lets rainwater run across and clean them, but long dry spells allow bird droppings, dust and pollution to build up. Deciduous trees nearby drop leaves on the panels and attract birds, and every layer of dirt reduces the electricity produced.
Cleaning every couple of years is generally enough, but homes near a major road, a construction site or the coast, where salt residue forms a coating, may need it more often, as may panels after long periods of extreme weather.
Safety comes first. Nobody should go onto a roof without proper equipment such as a harness, so many people leave the job to professionals and simply do spot checks. If you do clean panels yourself, choose a cool, overcast day. Use water, a soft non-abrasive sponge or cloth and a mild, eco-friendly soap, then a chamois or squeegee to avoid leaving residue.