I have recently decided to reform my house and some of the costs are pretty high, so I started doing some of the work myself. Not a bad idea, right? Well, yeah, but some of the stuff is pretty hard. For example, now I’m having trouble to install a felt on the flat roof of my garage. Some people told me it’s really not that hard, but I’m not sure and I really don’t want to screw up on this one. What is the best way to do it? Are there any special tips that I should know about?