I have a flat roof - should I lay my panels flat?

We often get questions from people who are getting conflicting advice from installers. One wants to install the panels flat, one does not.

My personal opinion is this: Do not lay panels flat unless you are prepared to clean them regularly. Flat panels can't fully self-clean in the rain, and grime build-up can be an issue.

If you do lay your panels flat - I strongly recommend panels with slots/channels engineered into the frames to help rainwater drain off. I used to recommend frameless panels - but I've since changed my mind. Why? Because in practice frameless panels require regular 'torque checks' on the bolts that hold them down to prevent them coming loose!

Here's a great blog post that Ronald wrote exploring horizontal panels in great detail:

https://www.solarquotes.com.au/blog/solar-panels-flat-roof/