As a solar installer in South Florida for the past 10 years, there is not a product that can compete with the Solar Stack! No penetration’s means NO LEAKS! Which means my guys can keep installing and not have to worry about roof repairs! The time saved from pulling tiles is astronomical, we can get the job done in 1 day as opposed to 2-3 day installs. I would professionally recommend Solar Stack to any homeowner interested in having a rooftop PV system installed!