To be honest, it'd be difficult for me to install garage doors by myself. First of all, they are cumbersome, and it's impossible to do it alone without special equipment. Secondly, doors are engineered construction, and installation methods vary from model to model. I don't even know whether to figure it out or immediately call a professional. In addition, you may face problems, such as improper installation or improper use of the garage door in the future. And let's not forget that you may not have all the necessary tools, and buying them will bring additional costs.