Glazing defect

[jboujaoude (John C. Boujaoude, PE)]

Inspectors,

Please take a look at attached “buble” in a commercial storefront window.

When looking closely, it appears like a magnifying glass!

Cause, name, would this defect spead?

Thanks for all input.

[ldapkus1]

Looks like low E film has trapped air. It may have a warranty.

[jmerritt1 (Jeff Merritt)]

Could be fish eye.
http://www.finishingiq.com/Blogs/BlogEntryDetails/tabid/351/ArticleId/744/Finishing-Defects-Fish-Eye-744.aspx