I am not sure to ask my question here in DIY topics (Apologies for this) but want to ask something related my garage. I am not a professional mechanic but my most of time spend in garage for the reason of my love with ATV. There (At garage), too much cool air passed from the door side even if the door remains close. I'm get tired for continuous use of electrical heaters because they did not work as much as like they have to. I really want to save my bill by minimize the electrical consumption. In this regard, I did a lot of research on Insulations for home and the most effective types of insulation that should work for both heat and cold. I also get through home insulation FAQs but for now not sure to have this solution for my garage or not. Any suggestions?