Christopher Nelson wrote:

I have two fairly short stories in a split level house. The highest
gutters are approximately 15' above ground level. I know the 4:1 rule
for putting up an extension ladder but I'm not sure how much of a 20'
extension ladder is lost to the overlap. Is a 20' ladder enough to
reach eaves or do I need a 22'?

Put stabilizers on it- and you can go to about the 10' height and your
body will make up the difference.

I bought one of these a few years ago because I needed the standoff
for a project. Now I love it -
http://www.google.com/products/catal... 49&sa=title#p


And while you're at it- if your ground is uneven, these make ladder
setup a breeze-
http://www.google.com/products/catal...5&sa= title#p

Jim