Contractors and roofing installers, do you know your crystalline silicon from your photovoltaics?

If not, the Metal Roofing Alliance (MRA) says it’s time to gain a better understanding about residential solar system installation. That’s because the solar market is hot, thanks to growing nationwide interest stemming from California’s recent solar mandate for all new homes beginning in 2020.

What does solar have to do with roofs? Everything, according to the MRA, because a return on a residential roof-mounted solar investment is only as good as the quality and longevity of the roof where it is installed. As a resource to the trades, the MRA now offers an online 101 for solar rooftop installation that helps define key solar terms, outlines installation considerations, describes compatible roofing material types including various options, and offers design planning basics and other resources at

Contractors and roofing installers can find the primer for solar rooftop installation on MRA’s website at, in addition to information about how to become a MRA member and gain access to other education and training related to a wide variety of metal roofing topics.