Nick Gromicko directed me to you.
I bought 200 windows (Grandview 5000) from PlyGem/Great Lakes Windows in 2007. Over the first few years, 7 cracked and 5 clouded. I am told by PlyGem the cloudy ones are covered under warranty, but not the cracked ones. A local window installer believes the cracked ones lost gas pressure and should be covered under warranty.
I read one of your articles stating as such “Due to molecular differences between argon and the principal components of air, nitrogen and oxygen, argon under pressure to escape a window unit may exit the seal faster than it can be replaced with air. Under this circumstance, the glass will bend inward to accommodate the gradual reduction in pressure within the window. If conditions are right, according to USGlass Magazine, “units have been reported to shatter…”
Is it possible this could have occurred with these windows and only caused a crack versus an implosion/complete shattering as your article mentions? The cracks are as follows: a complete crack along the entire width, several cracks or single 5-12 inch cracks. The windows with the cracks have no cloudiness. The cracks appeared over the past few years.
Thank you for your help.