Green Building Techniques- Page 15 of 325
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Optimum R-Value for Slab Insulation
How much slab insulation, would like some cooling effect.. I am designing a house for my family in Spokane WA. Cold dry climate 5b, but it is quite hot in…
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Insulating 2×8 Cathedral Ceiling
R40 in 2x8 Cathedral Ceiling Hello GBA Community, I'm finishing a garage loft/bonus room that is supported by attic trusses. Unfortunately I only have 2x8 rafters to work with. My…
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Air sealing when using batts in an open attic
I'll be insulating the ceiling/attic floor in our addition using fiberglass batts. (Cellulose and other alternatives aren't available here in rural Alaska.) Since we have 2x6 ceiling joists, I'll be…
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HVAC as it relates to tight home practices.
Hello, Looking to get input and professional advice on HVAC in a new tight home build. My preference is in favor of concealed cassette mini-splits and spray foaming all wall cavities…
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Why are attic knee walls insulated to ext. wall R-value and not attic floor R-value?
In a reply to another question (which I know from experience I can't link to, otherwise my Q. gets flagged as spam), Martin says that code for attic knee wall…
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What tool cuts closed cell foam but not Romex?
Is there such a thing?When a house has been spray foamed, the foam hides any wiring or plumbing in the space. I'm starting to see it happen a lot that…
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Insulating Platform Framing Inside Balloon Framing
Hello everyone, thank you for taking time to read and answer my post 🫠 My 125 year old 2x4 balloon frame house was stripped to studs, sheeted with OSB on…
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Plans for Installing a Greywater System
Hi all, I’m wondering if anyone has installed greywater drainage systems before, or has any opinions on best practices. My plan is essentially a parallel drain system, where blackwater (toilets…
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Integrating Rainscreen into Swing-Out Carriage Doors
Hello All, Location: Seattle Climate Zone: 4C I am in the process of fabricating two large (approx. 4'x7') out-swinging carriage doors for a conditioned garage workshop in Seattle, WA. The…
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Insulating a Deck Ledger
I am attaching a deck for a front entry to the thickened edge of a concrete slab. It’s gonna be out of rough cut white oak, coming out 5 feet…