I have heard that the low-E coatings on windows has been found to block cellular phone singals and make many LEED certified buildings "dead zones" for wireless service. Has anyone encountered this problem? If so, what are ways to prevent or fix this problem. Are there window coatings which do not block the signals? As more buildings are built with to these new specifications, I would like to address the issue before it becomes a persistent problem.

Any help would be greatly appreciated.

Thank you,