Green Homes News

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

Solar heat gain of insulation (not windows)

Green Homes 2 - Tue, 2025-06-17 17:28
It's great that the industry publishes the R value of different insulating materials (fiberglass, Rockwool, wood fiber, different foams, hemp, sheep wool, cellulose, and on and on), but I'm realizing…
Categories: Green Homes

Building science catch-22!

Green Homes 2 - Tue, 2025-06-17 12:53
Alright building science nerds,I am currently in the midst of what I thought was a re-siding project on the south facing exterior wall of my house in midcoast Maine. Turns out…
Categories: Green Homes

Unvented low pitch roof

Green Homes 2 - Tue, 2025-06-17 07:37
We are planning an addition which will have a low slope roof - 2 1/2” / 12”.  There will be both a shed vaulted roof (over a great room) and…
Categories: Green Homes

$250 DIY balanced ventilation system

Green Homes 2 - Tue, 2025-06-17 06:54
My shed/workshop's heating and cooling load is less than the minimum BTU output of my mini-split, so I put together a balanced ventilation system on a budget to provide fresh…
Categories: Green Homes

Center or stagger floor blocking members?

Green Homes 2 - Tue, 2025-06-17 06:32
Raised floor 3/4" Advantech Subfloor 2x12, 24" OC joists 2x12 blocking every 4' to provide bearing for the under and subfloor sheathing 3/4" green treat plywood under sheathing What's best…
Categories: Green Homes

Trump’s “Big Beautiful Bill” Will Undo the Inflation Reduction Act

Green Homes 2 - Tue, 2025-06-17 02:00
The proposed bill threatens several tax credits that have helped millions of households achieve greater energy efficiency and independence
Categories: Green Homes

Advice on new house with (damp) sealed attic

Green Homes 2 - Mon, 2025-06-16 19:34
Hello GBA community,I've just bought my first home, a 1911 Foursquare in Seattle. Overall, it's in great shape, but the roof and attic need immediate attention.The 30-year-old roof is failing…
Categories: Green Homes

Radon mitigation vs slab temperature

Green Homes 2 - Mon, 2025-06-16 12:53
I'm a builder in Montana. I'm selling a spec house that tested 5.5 and so I need to mitigate the radon down to below 4. The house is on a…
Categories: Green Homes

Do Unconditioned Attics Need Vents?

Green Homes 2 - Mon, 2025-06-16 02:00
And can an unvented attic/roof assembly be semi-conditioned?
Categories: Green Homes

Flashing windows with integral J-channel

Green Homes 2 - Mon, 2025-06-16 01:12
Hi, when flashing windows with integral j channel is there some sort of kick out flashing at the bottom to divert water out over (vinyl) siding when it flows down…
Categories: Green Homes

Exterior insulation in zone 4b

Green Homes 2 - Mon, 2025-06-16 00:04
My garden shed is built. I am cladding with 10” half log white pine, horizontally. I would like to add exterior insulation under the pine. The windows are already installed. what products are…
Categories: Green Homes

Two WRBs?

Green Homes 2 - Sun, 2025-06-15 19:02
I'm working on a house, in Climate Zone 6. The walls are wood framed with vapor barrier (membrain) on the interior. They are sheathed with 5/8" CDX plywood, then Blueskin…
Categories: Green Homes

Vented or non vented roof for shed?

Green Homes 2 - Sun, 2025-06-15 12:44
Help me get out of my head on this one. We are in the process of finishing a 10x12 shed kit. Ultimately it will be conditioned space: not sure if we…
Categories: Green Homes

2 options for new HVAC system, which would you choose?

Green Homes 2 - Sun, 2025-06-15 06:28
Hi, we have a 1870 square foot duplex with 3 floors. The first floor is one unit and the second and third floors are another. Currently there's a natural gas…
Categories: Green Homes

ICF and Frost Protected Shallow Foundation R-Value Requirements

Green Homes 2 - Fri, 2025-06-13 16:06
Does anyone know if both layers of EPS (exterior/interior) count towards the required R-value in a FPSF. In particular, the vertical R-value needed. Or, is it just the thickness of…
Categories: Green Homes

Wood Siding Splashback Solutution

Green Homes 2 - Fri, 2025-06-13 13:15
Hey All,One more wood siding question for the group. I know that many recommend against a stone veneer with wood sheathing and framing (even when done right with multiple drainage…
Categories: Green Homes

aeroseal leak

Green Homes 2 - Fri, 2025-06-13 11:45
I had aeroseal applied in my house and there was a large leak due to lack of proper seal on ducts . as a result I need to use an…
Categories: Green Homes

Whole Home Remodel – Spray Foam & IWS Issues?

Green Homes 2 - Fri, 2025-06-13 11:20
Hi all, In looking through the Q&A forum, I see a number of questions with very similar details to mine, but given the stakes I'd like to make sure I get…
Categories: Green Homes

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