Green Building Techniques- Page 4 of 316
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Air sealing attic floor & top floor ceiling lights
Hi all,We're doing a remodel on our Seattle-area craftsman with a vented attic and are working on developing a tight(er) building seal.I'm a bit stumped on the best approach to…
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Perplexing Proposal for Wall Assembly
Hi everyone! Since embarking on the adventure of building a new house in Climate Zone 4A, this website and forum, along with the PGH book, has been an invaluable resource…
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Exterior roof Larsen truss (CZ2, with vapor diffusion port)?
CZ2. Single story residential with hip roof (just over 4/12 slope).Looking to make a conditioned unvented attic, insulated at the rafter line (not the ceiling/attic floor). CZ2 so a vapor diffusion…
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Taping Polyiso sheets over zip?
Hello GBA, Wrapping up detailing on a house build in climate zone 4C. Our wall assembly previously called out 2" of cavity rock black R-8 for an open joint vapor open…
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Vent opening size
We are working on a PGH project and have had some discussions about the vent opening for the roof vents. As you can see on the sketch we have 2.5"…
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Tall crawlspace encapsulation
I am building a new home and plan on encapsulation. My lot is sloped so I have a fairly tall crawl space. It is 4' tall at the masonry side…
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Kneewall Insulation
There are numerous articles on insulating and air sealing kneewalls on this site and others. The consensus when choosing to insulate the wall is the use fiberglass batts between the…
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Tips on how to build a landscaped roof
We're building a single-story house in CZ3C with a 12" deep green roof atop a low-slope roof with an encapsulated attic for HVAC ducts. Any good references for what the…
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Filter box which side please
I bought an AC Infinity filter box, does it matter if the intake is on the oposite side of this design? Basically air comes in under the filter then goes…
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WRB and exterior Rockwool Insulation
We are using 2x6 studs, with cavity insulation, plywood sheathing, Siga Majvest as the WRB, then adding 4 inches of Rockwool Comfortboard to the outside before installing the rainscreen furring…