I have a 40 story high-rise with around 75% of the windows needing hard water stain removal. On the effected windows the hard water stain is mostly on the lower third of the window.
Does anyone have experience doing hard water stain on a large scale? Is there an advantage to mechanical removal vs chemical or vis versa? Any suggestion on a sealant that will last over a year?
Does anyone have experience doing hard water stain on a large scale? Is there an advantage to mechanical removal vs chemical or vis versa? Any suggestion on a sealant that will last over a year?
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