Will Solar Panels Make My Roof Leak?

Installing solar panels on the roof is the most cost-effective way to deliver solar energy to your home. Given that the materials and panels themselves are often under warranty for 25 years or more, those panels should provide decades of money saving clean energy to your home.

But will they cause leaks in the roof? No.

Modern solar technology is installed using time and lab tested equipment that is designed to protect the roof. Yes, installers will need to make holes in your roof to attach the solar panels securely, but they will be using special attachments that cause the water to run around and away from the penetrations. This is made possible by the fact that water very predictably runs down your roof. The attachments either have a raised barrier, that diverts the water around the attachment point, or create a ‘dimple’ that helps create a reliable seal between the roof material and the attachment point.

In fact, solar panels actually help protect the roof they cover from the harsh and degrading UV rays of the run.

http://understandsolar.com/will-solar-panels-make-roof-leak/