any big hardware store, home depot type thing, in the aisle with gutters and flashing and shingles. There are different styles, some looks different than the pic posted above. Ask someone if needed. The vinyl stuff is pretty cheap but works good.
In principle, shingling your roof really properly will perform the same function but not necessarily on a low-slope roof.
Pat
In principle, shingling your roof really properly will perform the same function but not necessarily on a low-slope roof.
Pat
