Green Homes News

Garage Roof ventilation

Green Homes 2 - Sun, 2025-06-22 18:01
Question about roof ventilation for a garage with house partially above it. For the 10' gable at the front, ridge ventilation could be added but not the back 16' as…
Categories: Green Homes

Floor Insulation in Elevated Buildings

Green Homes 2 - Sun, 2025-06-22 17:45
Dear GBA Crew,We're building an elevated single family home in Brooklyn, NY, climate zone 4A, humid, subtropical, FEMA A Zone,  about a quarter mile from NY Harbor.  Per NYC code…
Categories: Green Homes

Daylight Basement Insulation

Green Homes 2 - Sun, 2025-06-22 12:20
I am in the insulation phase of an addition project to my house and ran into a question regarding the daylight basement insulation. The below grade walls are furred out…
Categories: Green Homes

Offsetting the dehumidifier heat with a heat pump water heater

Green Homes 2 - Sun, 2025-06-22 05:09
A dehumidifier produces heat. A heat pump water heater consumes heat. They're a pretty good match for each other when you put them in the same room, because they kind…
Categories: Green Homes

Any red flags for these new window installations?

Green Homes 2 - Sat, 2025-06-21 15:12
HiI’m having new windows installed at my home in Omaha, NE (zone 5A). I’m an amateur DIY’er, but I’ve never installed windows before so my contractor is doing the installs.…
Categories: Green Homes

Do I need water vapor barriers on a this SIP and stud double wall?

Green Homes 2 - Sat, 2025-06-21 09:02
We are building a house near St. Paul MN and we have a double wall consisting of 8" SIP panels with Neopor GPS on the outside (R40) and a 2x4…
Categories: Green Homes

rain screen

Green Homes 2 - Sat, 2025-06-21 07:14
Building an outdoor sauna with therm mod siding over a rain screen.  My question is about attaching the furring strips. I will be using 1/2" by 3" furring strips over…
Categories: Green Homes

hurricane ties

Green Homes 2 - Fri, 2025-06-20 13:10
I was going to use hurricane ties for roof trusses on my workshop. They're not required by code, but I figured for about $100 in materials, why not? The framer…
Categories: Green Homes

Interview with Randy Williams

Green Homes 2 - Fri, 2025-06-20 02:00
GBA's new editor tries to prove he's up for the job (spoiler alert: he is).
Categories: Green Homes

Dew Point in Wall

Green Homes 2 - Thu, 2025-06-19 11:39
In this article by Martin Holladay from 2017 https://www.finehomebuilding.com/project-guides/insulation/exterior-rigid-foam-thin (see attached image), he shows a diagram with R19 batt and min R 11.25 outside with the dew point landing in…
Categories: Green Homes

Detailing wall with exterior rigid and hollow girts with fiberglass cavity insulation

Green Homes 2 - Thu, 2025-06-19 11:38
These questions may seem very nit-picky, but I want to finish this project right.I have a relatively large steel building (zone 4) that will partially be used for "living" space. …
Categories: Green Homes

Basement Cove Joint Insulation Interface on Retrofits

Green Homes 2 - Thu, 2025-06-19 09:41
Thank you in advance for reading my wall of text below.I'm currently in the process of re-finishing the poured concrete basement in my 1979 Southern New Hampshire home. The basement…
Categories: Green Homes

Are Window mounting straps necessary at bottom?

Green Homes 2 - Thu, 2025-06-19 08:39
Hi all, I’m installing European style flangeless windows (in the middle of the wall) and my plan is to prep the RO with a beveled sill (only the portion under the…
Categories: Green Homes

Opinion and questions on details of European flangeless windows in a thick wall with exterior insulation

Green Homes 2 - Wed, 2025-06-18 20:24
Hi AllI have searched extensively online, and I feel the following would be the best strategy to have a good air and water sealed "middie" windows in my planned thick…
Categories: Green Homes

Subfloor Insulation in a Vented Crawlspace

Green Homes 2 - Wed, 2025-06-18 14:58
Hello I live in Los Angeles, Inglewood to be precise. Our house was built in 1940 and had a gas furnace. We are in the process of putting in a…
Categories: Green Homes

Zip R with flash & batt??

Green Homes 2 - Wed, 2025-06-18 13:44
Hello I just came across a project that listed Zip R for sheathing, and then flash & batt in the cavity in a Zone 4A application. I have never come…
Categories: Green Homes

Sanity check on furnace to cold climate heat pump

Green Homes 2 - Wed, 2025-06-18 13:30
Good afternoon! I'm an architect looking for a sanity check on this load calc and equipment selection for my own house before pulling the trigger on a furnace to cold…
Categories: Green Homes

Icebreaker – replacing windows in Zone 6A

Green Homes 2 - Wed, 2025-06-18 13:17
Hi! Long time lurker who's excited to make better use of this great resource. We are in the process of slowly updating/renovating a 1000 sq/ft 1980's ranch-style home in Midcoast…
Categories: Green Homes

Rain screen furring strips — on or off studs?

Green Homes 2 - Tue, 2025-06-17 22:18
With 1x4 studs 5/8" & CDX sheathing, should we place the 1/2" PT furring strips on the location of the studs or (roughly) midway between the studs?Siding will be 1x6…
Categories: Green Homes

barndominium

Green Homes 2 - Tue, 2025-06-17 17:58
I took down an 150 year old barn and rebuilding to a livable space. Im not sure what to do about vapor barrier. Since beams and old siding are up…
Categories: Green Homes

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