Green Homes News

Mitsubishi SVZ 18k Low Airflow

Green Homes 2 - 7 hours 48 min ago
I was working on balancing a system yesterday and ran into a situation where we couldn't get the rated air flow out of the system.  Long story short, I ended…
Categories: Green Homes

Building Ω: Seeking Self-Reliance

Green Homes 2 - 12 hours 10 min ago
A Wisconsin couple set out to build a resilient net-zero homestead largely on their own. The first step was creating a design that balanced performance, affordability, accessibility, and self-reliance.
Categories: Green Homes

Fire Smoke HRV Intake Filtration

Green Homes 2 - Wed, 2026-07-15 20:04
I’ve posted before about the fire smoke filtration system I’ve been working with for about 3 years now.  It’s based around an 8” AC Infinity (refillable) carbon canister, and a…
Categories: Green Homes

Is this worth the money?

Green Homes 2 - Wed, 2026-07-15 13:33
I have a large 2nd floor Master with a double gable vaulted ceiling. The interior ceiling is beautiful wood that I want to keep intact. I'm about to start a…
Categories: Green Homes

Sealing attic entry

Green Homes 2 - Wed, 2026-07-15 13:20
Hey all. Seeing if anyone has slick ideas on how to air seal simple attic access. I have a few ideas but trying not to reinvent the wheel. Photo attached.…
Categories: Green Homes

Fireplace- passive home

Green Homes 2 - Wed, 2026-07-15 13:09
hi all againwe are currently specifying a gas start/wood burning fireplace for the family room in a near passive home.at the international builder show, spent some time with Renasaince, as…
Categories: Green Homes

Help with Slab-on-Grade Details

Green Homes 2 - Wed, 2026-07-15 11:36
All,We are finally in the home stretch of the design process and hope to be breaking ground by October of this year on the first building, a detached garage, which…
Categories: Green Homes

Healthy Homes Need Healthy Water

Green Homes 2 - Wed, 2026-07-15 02:00
How water testing and treatment are critical to ensuring clean, safe water from your faucets
Categories: Green Homes

Is there ever condensation within a roof vent cavity?

Green Homes 2 - Tue, 2026-07-14 22:37
Based on Martin’s answer here: https://www.greenbuildingadvisor.com/question/vented-attic-vapor-retarder US building codes do not require vented cathedral ceilings in zones 1-5 to have a vapor retarder (just need an air barrier). I also…
Categories: Green Homes

Improper installation technique for dense-packing cellulose in existing walls?

Green Homes 2 - Tue, 2026-07-14 17:26
Hi all. I have a question about the proper technique for dense-packing cellulose into existing wall cavities…Short version:  When dense-packing a wall cavity with cellulose, how important is it for…
Categories: Green Homes

Tackling rim joist seal and insulation with BCI blocking

Green Homes 2 - Tue, 2026-07-14 13:22
BCI joists are blocked at rim joist with BCI cutoffs, leaving a 3/4-1” air gap between the block and rim joist (due to outward facing half of BCI flange). Considering…
Categories: Green Homes

Insulation for small attached unheated mudroom addition Zone 6A

Green Homes 2 - Tue, 2026-07-14 09:48
I've designed an 8'x8' cathedral ceiling mudroom for clients in Kingston NY - Zone 6A. Although the addition is unheated and will be constructed on pier footings (not a full…
Categories: Green Homes

Flashing Masonry Chimney to WRB

Green Homes 2 - Tue, 2026-07-14 06:36
Hello Good People,For context, I'm residing my 1960 Cape in Boston, MA Climate Zone 6A. The house previously had cedar shingles over 1/2" fiberboard and tar paper, with board sheathing…
Categories: Green Homes

The American Home Then and Now: How Size Matters

Green Homes 2 - Tue, 2026-07-14 02:00
Rising housing costs, higher interest rates, and changing household demographics are pushing homebuyers to prioritize efficient, flexible living spaces over larger homes
Categories: Green Homes

Headers in Gable Walls

Green Homes 2 - Mon, 2026-07-13 18:29
EDIT:  I meant to reply to Martin’s post in advance framing.  That is the illustration I’m referencing in my question, for clarification.  Anyway, Im in the midst of building a…
Categories: Green Homes

Looking for someone to help me and my architect detail a high performance monopoly build

Green Homes 2 - Mon, 2026-07-13 16:46
Looking for someone experienced in brick monopoly framed details to help or provide construction details for a new build. Project is in the Southeastern US. Thanks.
Categories: Green Homes

Keeping out VOCs from wall assembly

Green Homes 2 - Mon, 2026-07-13 12:13
Is there an effective method to seal out VOCs from Tremco, etc, that is buried in a wall assembly?  Interior drywall and primer/paint, are not a complete barrier as I…
Categories: Green Homes

Sill Plate Detail (Insect/Vapor Barrier) Climate Zone 5A

Green Homes 2 - Mon, 2026-07-13 11:37
Picked up a roll of vintage copper/bronze screen ~4'x100' (over 50 lbs).Looking to put it to use at the Sill Plate, new construction home climate 5A.Originally planning on making a…
Categories: Green Homes

What to consider when wanting to have a MDF panel up against drywall on an exterior wall

Green Homes 2 - Mon, 2026-07-13 10:01
Hello!We are currently planning a closet design/build and I suspect that putting MDF panels (as the closet backer) up against drywall could be potential for a moisture problem (where the…
Categories: Green Homes

Q&A Spotlight: Cathedral Ceiling Insulation Detail

Green Homes 2 - Mon, 2026-07-13 02:00
Vented and unvented roofs have diffferent insulation requirements that aren't always apparent
Categories: Green Homes

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