This really depents on how the exisitng garage is framed, but in most cases is could be possible. Would entail a new header and side studs, then then siding & trim.
Its painted; go to hardware store. Buy spackle and sand paper. Sand it down, spacke the scrapes. Sand the spackle. Repeat again, though after this spackle prime the door. Then spackle and prime a ... read more