| Author |
Message |
robin treston
| | Posted on Wednesday, January 30, 2002 - 12:23 pm: |    |
Has anyone specified one-way glass? I have been trying to find info on glass manufacturer's websites, to no avail. Any help would be appreciated.
Thanks! |
Dave Metzger (Davemetzger)
| | Posted on Wednesday, January 30, 2002 - 01:02 pm: | |
Robin:
We have specified one-way (transparent mirror)glass around Mirrorpane E.P. Transparent Mirror by Libbey-Owens-Ford.
I believe that LOF has been bought by Pilkington.
But since it has been several years since we have specified this, I don't know the current status of this product or even if it is still made. |
Tracy Van Niel
| | Posted on Wednesday, January 30, 2002 - 04:15 pm: | |
Viracon also has a transparent mirror glass which we have specified for several projects. This product is not really "one-way" glass. From what I remember, the light level on the observing side of the glass needs to be lower than the light level on the side to be observed in order for the product to work successfully. |
Tommy
| | Posted on Thursday, January 31, 2002 - 04:06 pm: | |
Robin,
According to Glass Association of America (GANA)the correct terminolgy is Transparent/Two-way mirrors. For clear mirror glass you need a 10:1 lighting ratio and 5:1 for gray transparent mirrors. This is how we specified it in a Project.
Transparent/Two-way mirrors: Clear polished float glass with reflective coating to permit vision through one direction with appearance of standard mirror from the opposite side. Lighting ratio of 10:1 subject’s side to observer’s side. |
Richard Hird
| | Posted on Thursday, January 31, 2002 - 06:00 pm: | |
Found two examples of specifying one way glass. One for "Mirroepane" as mentioned above seemed vague. The other I offer for consideration.
One-Way Glass: Tempered gray tinted glass with pyrolytic reflective coating, minimum 29 percent outward reflectance for 1/4 inch thickness.
|
Dean McCarty
Unregistered guest
| | Posted on Tuesday, August 06, 2002 - 10:24 pm: | |
Coincidently, I just wrote a spec for this about a month ago.
Richard, two questions: What is the Viracon product? I can't find anything about it on their website. To what does the "minimum 29 percent outward reflectance" refer? Mirropane notes a "60 percent visible reflectance." Where am I not quite right?
Thanks for your help. |
Tracy Van Niel
New member
Username: Tracy_van_niel
Post Number: 7
Registered: 04-2002
| | Posted on Wednesday, August 07, 2002 - 11:40 am: | |
Dean:
We have Viracon "Transparent Mirror" in our specifications, but, you're right, I couldn't find it on Viracon's website either (I find Viracon's website hard to use). Sounds like a call to either your local rep or Viracon's tech line is in order. |
Lynn Javoroski
Senior Member
Username: lynn_javoroski
Post Number: 57
Registered: 07-2002
| | Posted on Monday, February 09, 2004 - 03:32 pm: | |
B. (GL-11) One way Glass: 1/4 inch thickness, transparent mirror, gray;
1. Acceptable manufacturer:
a. "Mirropane E.P. by Libbey-Owens-Ford Company.
That's from our master |
Lynn Javoroski
Senior Member
Username: lynn_javoroski
Post Number: 58
Registered: 07-2002
| | Posted on Monday, February 09, 2004 - 03:38 pm: | |
Sorry - LOF is part of Pilkington, but still has Mirropane EP
http://www.pilkington.com/the+americas/usa/english/building+products/architectural/products/mirropane.html.htm |
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