Re: GBlist: glass block

["Mark Marcoplos" <marcoplos@mindspring.com>]

Title: Re: GBlist: glass block

Hy-lite acrylic "glass block" windows claim to be 35% more insulated than glass.

 

Mark

----- Original Message -----

From: Sarah Holland/David Foley

To: Greenbuilding

Sent: Wednesday, January 31, 2001 2:26 PM

Subject: Re: GBlist: glass block

on 1/30/2001 7:52 PM, LISAPAUL@aol.com at LISAPAUL@aol.com wrote:

Serendipity. I just happened to have Pittsburgh Cornings' Glass Block specs
on my desk. They state an R value of 1.96-2.06 for their hollow blocks and a
1.15 for their solid glass block.

Paul Brown
Compass Construction
Grand Rapids, MI

The actual R-value of a glass block assembly will differ from the R-value of an individual block - typically the R-value will be less at the edge of the block than in the center, and the mortar used to bond the blocks will have a lower R-value.

Perhaps ASHRAE fundamentals lists this.  You could also try contacting the Building Energy Research Department at Lawrence Berkeley Laboratory.

- David Foley
--
Holland & Foley Building Design
232 Beech Hill Rd.
Northport, ME 04849 USA
p: 207-338-9869 f: 207-338-9859 e: hollandfoley@acadia.net