The depth of insulation is two toes - it had been blown in. I also insulated the garage doors with styrofoam panels received at copyright (There's a specific package for this). Beforehand, the garage and lani were not insulated. Coupled with rooftop solar panels for charging along with the battery https://marcoxazxt.newbigblog.com/41141548/solar-company-in-sriganganagar-things-to-know-before-you-buy