Pressure Washing for PM's

The exterior was stucco. Painted yellow with white trim and white window shutters. The reason I threw some sodium hydroxide in was because the entire place had gutters that were dark green and black with mold. The hydroxide helped to boost the pH level . Their gutters are now nice and white again and I didn't have to brush or scrub them.

Just a side note: Always be careful with using sodium hydroxide in your mix. Some types of painted surfaces and certain colors are not friendly towards it and will bleed the pigment out of the paint.

Good info. Thanks.
 
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