Green Homes News

Cathedral Ceiling Vapor Retarder? Zone 5 Connecticut

Green Homes 2 - Wed, 2022-05-25 09:55
We are re-doing a hipped roof cathedral ceiling that had chronic moisture problems due to lack of venting & that it was sheathed with 1x6 T&G planks. We are removing the…
Categories: Green Homes

Toshiba VRF efficiency at part load

Green Homes 2 - Wed, 2022-05-25 07:52
Having tremendous difficulties with the system. It’s a 12 kW multi split VRF with four indoor units. When running at full tilt it produces a cop of about 3.5. This agrees…
Categories: Green Homes

Choosing between estimates for heat pump systems

Green Homes 2 - Wed, 2022-05-25 07:37
We live in Brattleboro VT and our 1300 sq ft house is far from air-tight but there is blown insulation in the attic and newish windows. We are in the…
Categories: Green Homes


Green Homes 2 - Wed, 2022-05-25 07:15
My contractor wanted to know if he can flip the location of the R-5 c.i with the location of the plywood/OSB sheathing so that sheathing is nailed to the stud…
Categories: Green Homes

Sizing a minisplit – Include unconditioned space on same level?

Green Homes 2 - Wed, 2022-05-25 05:23
I'm receiving conflicting opinions on whether to include or exclude unconditioned spaces on the same level when determining minisplit size. Depending on the "truth" I believe it will either allow…
Categories: Green Homes

Exterior insulation window detail example.

Green Homes 2 - Wed, 2022-05-25 05:13
Please help!   My build begins next week and I will be wrapping my house in 2.5" exterior insulation held on with 1x4 furring strips.   I may finish with vinyl,…
Categories: Green Homes

Weatherizing a Boxed-Bay Window

Green Homes 2 - Wed, 2022-05-25 02:00
A detail for ensuring continuity of the four control layers on a structurally complicated building component
Categories: Green Homes

Installing Windows Using Sacrificial House Wrap

Green Homes 2 - Tue, 2022-05-24 12:49
Hello,I'm in the process of remodeling a cabin and have been stuck in a holding pattern due to various issues with the county. In order to protect the building which…
Categories: Green Homes

Sill gasket placement when metal strapping is required

Green Homes 2 - Tue, 2022-05-24 12:35
Hi, we are required by our building code to use metal strapping with our sill plates. This is for new construction. Where and how would you place the sill seal…
Categories: Green Homes

Climate Change and Indoor Air Quality

Green Homes 2 - Tue, 2022-05-24 12:00
A look at the ways climate change impacts IAQ and strategies for adapting
Categories: Green Homes

Minisplit in Attic Not Cooling Upstairs

Green Homes 2 - Tue, 2022-05-24 11:44
Hi Everyone,About 4 years ago I had a Mitsubishi Hyper Heat system installed in my home. There is a condenser outdoors, two wall units heating and cooling downstairs, and I…
Categories: Green Homes

Summer Environmental Writing Group

Green Homes - Tue, 2022-05-24 10:56
Categories: Green Homes

Summer Environmental Writing Group

Green Homes - Tue, 2022-05-24 10:54

Working on chapters, articles, or other writing projects in the environmental humanities and social sciences this summer? Looking for a sense of community and collegiality? 

Inviting all grad students and postdocs in the humanities and social sciences with environmental...

Read more about Summer Environmental Writing Group
Categories: Green Homes

HVAC retrofit in older home

Green Homes 2 - Tue, 2022-05-24 10:12
Hi all!  I'm currently planning an hvac retrofit and was hopping you could let me know if I'm on the right track and/or offer suggestions and improvements I may not…
Categories: Green Homes

Coastal Home Buyers Are Ignoring Rising Flood Risks

Green Homes 2 - Tue, 2022-05-24 02:00
Home buyers in Florida are unfazed by prospects of more frequent flooding.
Categories: Green Homes

Truss question – energy efficient shed project

Green Homes 2 - Tue, 2022-05-24 00:22
The time is getting close to start construction on my energy efficient shed. Some quick background:- 8'*12' (can't build larger for building code reasons)- Pacific Northwest (climate very similar to…
Categories: Green Homes

New build in San Diego coastal… U value matter much?

Green Homes 2 - Mon, 2022-05-23 23:42
We're getting ready to break ground on a 2 story 4000 sq ft house a few hundred feet from the ocean, in San Diego. Our weather 90% of the…
Categories: Green Homes

Make-up air run to furnace cold air return?

Green Homes 2 - Mon, 2022-05-23 22:43
I got my rough HVAC inspection on my gut remodel. I passed other than the inspector insisting that I install a 6" duct from outside through a barometric damper to…
Categories: Green Homes

Minimum Plywood Thickness As An Air Barrier

Green Homes 2 - Mon, 2022-05-23 18:47
Hello,A number of articles and blogs have been written on using OSB ( ), plywood/zip ( ), and smart vapor barriers ( ).  They all illustrate various…
Categories: Green Homes

Adding a plumbing vent to old plumbing—too much work?

Green Homes 2 - Mon, 2022-05-23 16:02
Ok plumber types. I understand why venting is now required, but many older systems lack individual trap vents. Moreover, older systems often have a single cast iron vent stack that…
Categories: Green Homes


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