Member Discussion Forum

Description

Topics regarding quality of glass, its processing and its application in building. 

low e discoloration

My home is 4 yrs old, with low e glass with metal coating (not film). Several sashes have developed a spotting, metallic-looking discoloration on the interior of the glass. I'm being told it is due to the builders cleaning method of the concrete siding. True? How impervious should the glass seal be to the acid wash? Can it be "fixed", short of changing the windows?

"burned" glass

I opened a double glass that had moisture between the glasses due to lack of isolation. I tried to clean the white crystal like marks that was caused due to the water that penetrate between the glasses. I could not clean them completely, when observed with optical magnification 5x it seems that the glass was "burned". What is the explenation of this "burn" -like phenomenon. How can this surface damage be cleaned?