On Mon, 13 Jul 2009 09:20:16 -0400, willshak
wrote:

on 7/12/2009 12:16 PM (ET) Jon wrote the following:
What are the major differences in installing 30-yr. shingles as
opposed to 20-yr ones? I would like to replace mine with 30-yr. and
do the labor myself but only have experience with the standard flat
three tab 20 yr. style.

They're heavier carrying up the ladder.

That's what my assistant is for. He's paid not to complain! bg