As my last step of prep before painting I spray dilute bleach on exterior surfaces. Must this bleach be washed off before painting? If so, what are the consequences if it's let dry and painted over?
- posted
16 years ago
Must Bleach Be Washed Off Before Painting?
Loading thread data ...
- Vote on answer
- posted
16 years ago
On Dec 6, 3:00=EF=BF=BDpm, jim evans wrote= :
rinse twice change water often. if you were attempting to kill mold add a midedecide to the new paint and mix well.
it can prevent a reoccurence
- Vote on answer
- posted
16 years ago
What kind of surface? Whatever it is, I would avoid getting it on any metal. When our condo was painted, the contractor used something that smelled like bleach to spray all over the painted concrete block/stucco ext. walls, and pressure washed afterward. I thought the sequence odd, but they did a good job and it still looks good after 6 years. I don't know what bleach does when it dries, but I would rinse it with clean water and let the surface dry very well.
- Vote on answer
- posted
16 years ago
Common bleach is a solution of sodium hyperchlorite. It breaks down into sodium chloride (salt) and oxygen. Oxygen is what does the bleaching. You are dealing with dilute salt water. Power washing it off seems to make sense.