[Greenbuilding] Spacers for glass block and a roof question

[Irina Golfman]

Hello everyone,

We are installing a glass block wall on one side of the bath/shower 
enclosure. Glass block is typically installed using spacers that are (what 
else?) made with PVC plastic. The mason said that he can't warranty his 
work if we do not allow him to use the spacers. Has anyone had any 
experience in installing the glass block without spacers in this type of 
application?

We are using Enviroshake for the new roof and insulating in the rafters 
with a soy-based urethane spray foam. The insulation contractor tells me 
that we should get rid of our ridge and sofit vents and use a "hot roof" 
method. The roofer said that it will be beneficial to vent regardless of 
the insulation. Any thoughts on this would be very much appreciated.

Peace,
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Irina Golfman Rosenblum
Belmont, MA