[MassHistPres] Fwd: Advice on windows??

[mfenollosa]

Hi, I received this request from a member of our HDC.  Can any of you 
provide any advice?  I can send a couple photos if that will help.

Thanks,

Marilyn Fenollosa

At an historic barn renovation project that we're doing, we have a 
couple of square windows with different colors of glass that we'd like 
to retain (actually relocate slightly), but as the Owner and current 
codes require that they be made more insulating that they are now, I'm 
trying to figure out the best way to do that.  I was wondering if you 
have any recommendations or could point me in the direction of information.

Each unit is essentially a simple sash about 20 inches square, installed 
in a diamond orientation (rotated 45 degrees) in a simple wooden frame.  
The frames are not really worth saving, and the sashes need some 
restorative work and some of the glass replaced.  Ideally, the exterior 
appearance would end up being the same as it is now (no additional 
lights of glass in front of the unit), so I was thinking of installing 
it more or less as it was originally, with an added light of insulating 
glass on the inside for insulation.  But I think I'd need some sort of 
ventilation between the historic sash and the new insulating glass.  
Anyway, I was thinking that rather than trying to invent something, 
maybe you or someone has solved this problem before.  Any suggestions??


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