galvanised steel screw stains


New Member
Hi all, long time since posting anything, been flat out down here!
I have had a builder mate of mine wanting me to fix up some stains to one of his clients deck. They had a backyard operator clean it but the galvanised screws have leached a stain onto the decking( around the screws), it looks like ink. Would Oxcylic acid remove such a stain or will I need to go looking for something else?


Add a base like like bleach to neutralize the acid. Without a neutralizer the acid just will keep eating. If you're not sure about your runoff, ph meters are like $20.

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