The depth of insulation is 2 ft - it was blown in. I also insulated the garage doors with styrofoam panels acquired at copyright (There's a specific package for this). Beforehand, the garage and lani were not insulated. Metal contacts at the very best and bottom of a solar cell https://solarcompanyinsriganganag66543.blogspothub.com/33985658/5-tips-about-solar-energy-you-can-use-today