On Mon, 18 Jan 2010 07:59:24 -0800 (PST), "
wrote:

Need to do the north side of my house which doesnt get any sun.

If you have trees causing heavy shade, consider thinning some branches
out and give the wall more sun light.

Whats worked very good for you ? Would like to find something i can
use in conjunction with a water hose to blast it. Thanks.

A garden/lawn sprayer attaches to the hose (used for soluble
fertilizer), you adjust to fan spray and soak the wall (diluted
bleach mix? ). Work from the top to bottom approach, rinse often to
avoid streaks/streaking of the vinyl
..