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Old 11-22-2012, 08:43 AM
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BrettT BrettT is offline
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Join Date: Mar 2011
Location: Waynesboro, VA
Posts: 81
We never use a PW to clean vinyl siding. We use low pressure (85 psi) with a Fatboy pump and use 12.5 sodium hypoclorite (SH) and a good surfactant. About 2 gals. SH in a 40 gal mix. Anything that is growing on the house is gone within a few mins. (depending on the temp.) We water all the vegetation before the application and after rinsing. The only time we use the PW is when we don't have good water pressure from the house and then we use the house wash soap tip just for distance. If it's only a house wash, average two story 2000 sf house, we are finished in just about an hour.
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