Green Homes News

What WRB/Air Barrier to use for CMU wall + interior cellulose insulated wall?

Green Homes 2 - Sun, 2024-02-11 11:37
We are remodeling an old concrete block building into our future net zero (or almost net zero) retirement home.  The house is located in Hillsborough, NC which is in climate…
Categories: Green Homes

How to cantilever a double stud wall (and other questions)?

Green Homes 2 - Sun, 2024-02-11 07:37
Hi all,I hope to dip again into your well of generosity and knowledge. It's been a great help so far.I'm designing an ADU in CZ6, southern Quebec. It'll be a…
Categories: Green Homes

Taping Polyiso sheets over zip?

Green Homes 2 - Sat, 2024-02-10 13:49
Hello GBA, Wrapping up detailing on a house build in climate zone 4C. Our wall assembly previously called out 2" of cavity rock black R-8 for an open joint vapor open…
Categories: Green Homes

Dricore or other option for basement subfloor?

Green Homes 2 - Sat, 2024-02-10 12:48
Getting ready to install flooring in my basement remodel.  Concrete slab is in pretty good shape.  A few hairline cracks in a few spots but nothing major.  It's dry, house…
Categories: Green Homes

Vent opening size

Green Homes 2 - Sat, 2024-02-10 11:35
We are working on a PGH project and have had some discussions about the vent opening for the roof vents. As you can see on the sketch we have 2.5"…
Categories: Green Homes

WRB location with continuous insulation considerations/potential issues

Green Homes 2 - Sat, 2024-02-10 09:42
Morning folks,I am building our families cottage in Ontario, Canada. The walls are 2x6 with r22 batt and osb sheathing, we will be adding 1" silverboard with taped seams, 1x4…
Categories: Green Homes

Harvard Grid Climatech Startup Bootcamp

Green Homes - Sat, 2024-02-10 06:30
Location: 1.402, SEC, 150 Western Ave, Boston

Join the Harvard Grid, in partnership with the Harvard Office of Technology Development and the Salata Institute for Climate and Sustainability for a one-day sprint designed for science and engineering masters, PhD candidates, faculty, and postdocs who wish to translate their tough tech research into a sustainability or climate focused startup after completion of their program. This workshop will inspire ideas to launch your research as a start-up, giving you the knowledge and skills to make this a reality, and connect you with a community of like-minded individuals on the same path....

Read more about Harvard Grid Climatech Startup Bootcamp
Categories: Green Homes

Inflation Reduction Act and non-profit

Green Homes 2 - Fri, 2024-02-09 21:50
I volunteer with a local non-profit in Kansas, and I want to provide them with information about potential incentives for energy efficiency upgrades to their buildings and appliances.  My problem…
Categories: Green Homes

Manual J for well insulated house

Green Homes 2 - Fri, 2024-02-09 19:04
I'm working on the Manual J, S and D for our upcoming home and would like some opinions on software to use. We're building a simple 3br 26x36 colonial, with…
Categories: Green Homes

HVAC design for large new build.

Green Homes 2 - Fri, 2024-02-09 18:30
I'm in the design phase for a large residential build and I'm having difficulty picking out a general HVAC topology.  I'm going to track down some high performance house HVAC…
Categories: Green Homes

DIY Baffles for Cathedral celing

Green Homes 2 - Fri, 2024-02-09 17:47
Hello, I read the advice in this article...https://www.greenbuildingadvisor.com/article/site-built-ventilation-baffles-for-roofsMy neighbor wants to do DIY baffles out of 2 inch foil faced polyiso to bring his roof assembly a higher r value.…
Categories: Green Homes

Condensation on sealed combustion boiler intake

Green Homes 2 - Fri, 2024-02-09 16:30
I’m building a new home and the plumber just finished installing the propane boiler. This is a sealed combustion unit and, to accommodate the air intake duct he came up…
Categories: Green Homes

Cellular Shades and Insulation: What matters the most?

Green Homes 2 - Fri, 2024-02-09 16:28
We are looking at adding cellular shades to a four-season room, which is already quite well insulated, but does have many, large windows.  We are going to go for the…
Categories: Green Homes

Dr. Joe Lstiburek Discusses Building “Almost” Net Zero Ready Homes

Green Homes 2 - Fri, 2024-02-09 16:20
Here's a great paper from the Building Science Corporation website about how to build net zero homes. Dr. Joe provides building sections and details on how to construct residential buildings…
Categories: Green Homes

Canned spray and vapour barrier

Green Homes 2 - Fri, 2024-02-09 15:59
Hoping to get some insight,  We are about to complete attic air sealing on a 2000 home in climate 7A, which has a 6mi poly on the ceiling with cellulose insulation. The vapor…
Categories: Green Homes

Conventional Stucco vs Synthetic Acrylic

Green Homes 2 - Fri, 2024-02-09 15:41
On an ICF/EPS structure, is it better to apply an acrylic stucco or Portland based conventional stucco?There is a product called "U-Stucco" and it's conventional stucco but contains fibers in…
Categories: Green Homes

Should dead spaces within the conditioned envelope be vented?

Green Homes 2 - Fri, 2024-02-09 14:47
We have a hallway, pantry and mudroom area approximately 12' x 15'  on the back of our house in what used to be an old porch that then had a…
Categories: Green Homes

Can I use a wood burner as backup to natural gas furnance?

Green Homes 2 - Fri, 2024-02-09 11:33
We have a great natural gas forced air heating system.  The house is 1950's frame construction,  two stories with the furnace on the lower floor at one end.   In the…
Categories: Green Homes

Poor Comforboard availability. Alternatives?

Green Homes 2 - Fri, 2024-02-09 11:11
We’re building on the Southwest corner of climate zone 5A (Northwest Kansas). Hoping to be able to heat and cool with electricity from solar so we’re trying to build for…
Categories: Green Homes

Harvard Energy Journal Club

Green Homes - Fri, 2024-02-09 10:00
Location: HUCE 440, MCZ, 26 Oxford St., Cambridge

"Harvard Energy Journal Club."

... Read more about Harvard Energy Journal Club

Categories: Green Homes

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