Quote:
Originally Posted by JDRVKR
I have used Spray and Forget or Wet and Forget and it works well. It will take a couple of months to clear the mold. Can be in a pump sprayer of hose-end sprayer.
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I have also used Wet & Forget on a few roofs, including just yesterday. It works slowly, lasts for years and no stress on the roof. You have to have a lot of faith in the power washer that they don't turn up the force to get the job done quicker. I've seen some striking damage done to roof and siding by power washers using excess force.