House wash mix for homes near ocean

I often pressure/soft wash homes across the street from the ocean. Is a standard house wash the best thing to use when a house is covered in salt? The houses already have serious issues with rust on any exposed metal. I would like to avoid making matters worse for them. It’s like washing salt with salt water… right?

Regular house wash mix is the way to go. It’s not like you just soap the house and leave it so just be sure to rinse well and you’re good to go.