Can solar panels be installed on a flat roof?

Yes, you can successfully install solar panels on the flat roof of your home or business. However, there are some challenges to be aware of. Flat roofs have a minimal slope allowance that will accommodate solar PV panel systems. A roof having a rise of 0.25 inches over a 12-inch run — known as a 0.25:12 pitch roof — is considered a flat roof.

Where should solar panels be installed on a roof?

The best place to install solar panels on a roof (flat or sloped) is on a south-facing section, as it will receive the most daylight throughout the day, optimising electricity production.

How much do flat roof solar panels cost?

Flat roof solar panels can cost between £2,800 - £12,100 for the average 2 to 3 bedroom house. Flat roof solar panels cost less in terms of labour costs since installation is easier (however this depends on your roof). One downside of putting solar panels on a flat roof is that they take up more space per kW.

What angle should solar panels be installed on a flat roof?

With flat roofs, the installer has to set the pitch of the solar panels (typically between 30° to 50°, while the best orientation for solar panels in the UK is southward). This can be beneficial as it allows for optimal angling and positioning for your region.

Can a low slope roof be used for solar panels?

Low-sloped roofs are common in the UK and can be used to install solar panels, although they may not always have the ideal angle for efficiency. A low slope is generally one where the pitch is between 4:12 and 2:12. Low-sloped roofs require less roofing material per square foot making them easier and safer installation and repair processes.

Are flat roof solar panels a viable option?

In reality, flat roofs are just as viable and can bring many unique advantages, being easier to maintain and offering a simpler installation process. Let’s discuss the costs, benefits, and drawbacks of flat roof mounted solar panels.