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For rust removal, do you recommend eye protection as well as a mask? I’ve never done it, so I don’t know if it’s risky to the peepers!
On the insulation section – we routed all our wires and pipes outside of the walls, so that if anything went wrong it is easy to get to. Wires and pipes hidden in spray foam under the floor or behind the walls will be a nightmare if you need to get to them for a fix. Just a thought.