I have listed a property that has a great deal of rust on the vinyl siding in areas where they watered their flowers. It is well water that has not been softened. Will Muriatic Acid remove this rust without damaging the vinyl siding?
Henry Ripberger real estate - New Castle, Indiana 2003
You haven't got a thing to worry about ... use any acid you like although perhaps not nitric ... use any concentration you wish (of the normal 'store' brands). PVC is utterly resistant to HCl, AKA Muriatic acid.
Freeman Newton [deceased] (It is our sad duty to advise that Freeman passed away
April 21, 2012. R.I.P. old friend).
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