The depth of insulation is 2 ft - it had been blown in. I also insulated the garage doorways with styrofoam panels acquired at copyright (There's a particular package for this). Formerly, the garage and lani were not insulated. Most panels these days are between 15% and 20% successful, that https://ricardonqogh.timeblog.net/70711974/top-guidelines-of-solar-energy