Calcium stains on glass

crokseti · Nov 18, 2012

I am building a greenhouse for someone and they have a lot of e-glass to use but most all of them have some serious calcium stains (I'm assuming thats what it is anyway).
We have tried steel wool and baking soda/vinegar solution which got out most but not all.
There is still a white haze after it dries. Any ideas about getting this stuff to come off?

Havana Dude · Nov 18, 2012

razor blade

BIG RANDY · Nov 19, 2012

Its expensive and very labor intensive but cerium oxide and a polishing pad will take it off.

westcobbdog · Nov 19, 2012

could it be a seperation in the double pane glass and a chemical reaction has occured, creating a frosting of the pane?

The Flying Duckman · Nov 19, 2012

Try aluminum brightner. Use caution (gloves, eye protection, etc.)

Pat Tria · Nov 20, 2012

Citric acid will definitely dissolve calcium deposits. But glass can be polished using sodium metasilicate. Either one at 10% will work effectively.

dwhee87 · Nov 20, 2012

CLR from the grocery store will take it off. It's dilute phosphoric acid. Follow all precautions on bottle.

Calcium stains on glass

crokseti

Senior Member

Havana Dude

Senior Member

BIG RANDY

Senior Member

westcobbdog

Senior Member

The Flying Duckman

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Pat Tria

Senior Member

dwhee87

GON Political Forum Scientific Studies Poster

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