What streaks your siding
Algae and grime settle into vinyl siding and show up as green and grey streaks, usually worst on the shaded wall. It looks like dirt, but it is growing, and it keeps coming back until the wall is cleaned properly.
The usual shortcut is a hard blast. High pressure can force water behind the siding, into the walls, and it can leave marks in the vinyl itself. That is the job behind the $99 offer, and it is the repair bill nobody mentions.



