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Question DetailsAsked on 9/24/2013

How do I get scale off of my windows from the sprinkler system's hard water?

I have tried every detergent, vinegar, Scrbb Off, muratic acid, razor blades and nothing has had any impact.

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1 Answer


wow - you are one determined cuss. I am assuming this buildup is actually on the outside ? Or has the prolonged water exposure caused seal failure, and what you are actually seeing is lime buildup and cnodensation on the inside of double or triple pane windows ? IF that is the case, then glass unit (glass with metal frame holding the panes in) has to be replaced - almost always can be done without removing window frame from the house.

Assuming on the outside, since muriatic acid and vinegar did not remove it, it is not lime deposits so must be iron or manganese deposits - three possibilities for you, but I would not guarantee them, given what you have already tried:

1) Windex with a long sit time before wiping off- put paper towel at bottom to prevent getting into and corroding the window glass unit aluminum frame
2) Lime Away, but be careful not to let it soak into the window caulk too long - might soften it or peel paint with long exposure - try first on an obscure window
3) Mechanics hand cleaner (gell type without pumice or abrasive) on a rag, but keep off the paint and caulk - WILL take them off with any prolonged exposure, and do NOT rub hard as it may have a bit of grit in it even if not abrasive/scouting type.

You should definitely re-aim your sprinklers - they should not be wetting the side of the house - that is an invitation to rot in the walls and insulation degradation.

Answered 5 years ago by LCD

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