24 Jun '13, 4pm

Green Building Q&A: Air-Sealing at Exposed Beams

I'm currently under construction on a project and wanted to run by my air sealing strategy at some exposed beams by some other minds. The project is a double-stud wall house in climate zone 6B. About 1/2 the house has a typical attic, the other half has a cathedral ceiling. For the cathedral ceiling, the structure is parallel chord trusses that are 24" deep. They will get a continuous ventilation channel from eave to ridge that will be sealed to the truss chords. The remainder of the cavity will be blown full with fiberglass. The trusses have 2 lines of bearing where they are supported by exposed beams (and we have added 2 more decorative beams to balance the design of the ceiling plane.) I am doing airtight drywall on the ceilings and walls in the project and am trying to find the best way to get a continuous air barrier at these beams. The ceiling finish is going to be 5...

Full article: http://www.greenbuildingadvisor.com/community/forum/energ...

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