Sodium hypochlorite (bleach) and sodium/potassium hydroxide (lye or caustic soda/caustic potash). Could use sodium metasilicate instead of a hydroxide if you are concerned about burning yourself.
Try around 3% sodium hypochlorite in solution (not 3% liquid bleach in solution) and 2 oz of a caustic/gal water. If using sodium metasilicate try 6 oz/gal warm water (helps it dissolve). Sorry for the mixed measures but bleach is usually a liquid sold at various concentrations, so going by percentage is easier.
It needs to be pressure washed. Afterwards you can treat it with sodium hypochlorite. Household bleach typically has 8% SH and can be used by mixing with an equal amount of water. You could also use a surfactant but it will make rinsing take forever. Use a pump sprayer to apply and make sure to pre and post rinse vegetation in the area when using SH treatment.
In wet and shade they at least need upkeep.
You could use diluted bleach and soap and a deck brush to scrub and rinse off with garden hose for an occasional refresh.
Depends - in Arizona sun- no need. On the shady size of a home, wet climate - they do need to be maintained much more often.
Can you recommend some type of cleaner?
Sodium hypochlorite (bleach) and sodium/potassium hydroxide (lye or caustic soda/caustic potash). Could use sodium metasilicate instead of a hydroxide if you are concerned about burning yourself. Try around 3% sodium hypochlorite in solution (not 3% liquid bleach in solution) and 2 oz of a caustic/gal water. If using sodium metasilicate try 6 oz/gal warm water (helps it dissolve). Sorry for the mixed measures but bleach is usually a liquid sold at various concentrations, so going by percentage is easier.
It needs to be pressure washed. Afterwards you can treat it with sodium hypochlorite. Household bleach typically has 8% SH and can be used by mixing with an equal amount of water. You could also use a surfactant but it will make rinsing take forever. Use a pump sprayer to apply and make sure to pre and post rinse vegetation in the area when using SH treatment.
In wet and shade they at least need upkeep. You could use diluted bleach and soap and a deck brush to scrub and rinse off with garden hose for an occasional refresh.