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Ray Liu
New member
Username: highhook

Post Number: 1
Registered: 11-2003
Posted on Wednesday, November 19, 2003 - 04:43 pm:   Edit PostDelete PostPrint Post

Does anyone know of a manufacturer and product name for a screen material or shade or board that can be applied directly on windows so it can deflect electronic sound waves and frequency from building exterior that can be? I've heard of such a screen being used in board room and highly confidential rooms in closedly spaced buildings to prevent electronic eave dropping.
John Bunzick, CCS, CCCA
Senior Member
Username: bunzick

Post Number: 164
Registered: 03-2002
Posted on Thursday, November 20, 2003 - 09:01 am:   Edit PostDelete PostPrint Post

I have not heard of such a thing, though perhaps it exists. Also, sound inside the room will cause glass to vibrate, and this can be picked up by sensitive equipment on the outside. I'd put the board room interior to the building if it's that sensitive.
Richard Howard, AIA CSI CCS
Senior Member
Username: rick_howard

Post Number: 9
Registered: 07-2003
Posted on Thursday, November 20, 2003 - 10:51 am:   Edit PostDelete PostPrint Post

Ray, I know such coatings exist. I had a government project about 12 years ago that required such a coating on the glass. Unfortunately, we were instructed to have the glass delivered to the agency so thay could take it to get coated, so we never knew what the coating was or who applied it.
Richard Howard, AIA CSI CCS
Senior Member
Username: rick_howard

Post Number: 10
Registered: 07-2003
Posted on Thursday, November 20, 2003 - 11:43 am:   Edit PostDelete PostPrint Post

The acronym TEMPEST came back to me and I was able to track down a product by TempestUSA distributed by Pilkington. Link below:
http://www.tempestusa.com/emiglass.html

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