Painting exterior wood house
You don't need to wash off the mold
You need to kill the mold
Kill it dead
Dead, dead, dead
Then you can powerwash the dead stuff off
I'd recommend a Jomax mix, the recipe is on the can
You can also use a bleach and water mix
Normally, if you are repainting with the same type of paint, you don't have to primer
If you have cracking, that depends on how bad it is
If you scrape off any loose stuff, how much primer is showing? Bare wood?
What you find will determine your next course of action
Any good quality paint line from a paint shop (Ben Moore, Sherwin Williams, Sikkens) will do, and in your case I'd ask the mixer to put a shot of m/m treatment in the can before shaking it also
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