Green Homes News

Venting a low-slope roof in a cold climate without building an “over roof”

Green Homes 2 - Wed, 2023-09-27 15:49
Embarking on a new build in Northern Utah (Zone 5). Home will have low slope shed style cathedral roof of a single slope (no odd shapes of any kind). I've…
Categories: Green Homes

Launch of Mittal Institute Platform for Climate Change in South Asia

Green Homes - Wed, 2023-09-27 15:30
Location: S050, CGIS South, 1730 Cambridge St, Cambridge


Come hear from our climate faculty and students about our newly launched research initiatives focused on climate data and adaptation in South Asia and learn about how you can engage on these projects! You can learn more about these projects...

Read more about Launch of Mittal Institute Platform for Climate Change in South Asia
Categories: Green Homes

Insulating rim joists without sealing the sides?

Green Homes 2 - Wed, 2023-09-27 15:22
Hey -I have ~1950s house in Quebec (zone 6A I guess) with an unfinished basement that I am trying to insulate in order to make the winters a bit warmer…
Categories: Green Homes

Can a homeowner buy a single CoolCalc Manual J8 report credit?

Green Homes 2 - Wed, 2023-09-27 15:06
Or is their "5 reports for $20" option the best one can hope for in terms of getting a "full" report?I know this isn't a CoolCalc forum, but I figure…
Categories: Green Homes

Residential HVAC design

Green Homes 2 - Wed, 2023-09-27 14:51
Does one need an engineering degree (and/or certifications) to perform residential Manual J, S, D, and T calculations as a third party consultant? Merely curious.
Categories: Green Homes

Soffit venting under pop-out / balcony

Green Homes 2 - Wed, 2023-09-27 14:30
Hello everyone, I am currently working on renovating a house, which features several "pop-out" soffits, as can be seen in the attached picture. Above each of these soffits, there is insulated…
Categories: Green Homes

Harvard Seminar in Environmental Economics and Policy

Green Homes - Wed, 2023-09-27 14:30
Location: Land Hall (400), Belfer Building, HKS, 79 JFK St., Cambridge

Eleanor Krause, Harvard University, will present "Job Loss, Selective Migration, and the Accumulation of Disadvantage: Evidence from Appalachia’s Coal Country."... Read more about Harvard Seminar in Environmental Economics and Policy

Categories: Green Homes

Building drain-pipe brand decision fatigue!

Green Homes 2 - Wed, 2023-09-27 13:29
Hi all,I’ll be using 3” PVC schedule 40 for my 150’ run to the septic tank, but there seem to be many brands to choose from at the local box…
Categories: Green Homes

Mitsubishi heat pump set up – climate zone 4c

Green Homes 2 - Wed, 2023-09-27 13:27
We are about to have a Mitsubishi heat pump installed in a very small house with one floor and a basement. We are unsure about one of the options presented.…
Categories: Green Homes

Central air heat pump: sizing via kBTU/hr vs CFM?

Green Homes 2 - Wed, 2023-09-27 11:53
My Manual J output for a ducted heat pump in the Seattle, WA area (climate zone 4 coastal) indicates 27 kBTU/hr heating load with CFM needs of 1001 CFM, and…
Categories: Green Homes

Window Restoration and Energy Efficiency

Green Homes 2 - Wed, 2023-09-27 10:00
I have a small window restoration business in Cleveland. Nationally, the window restoration community is great, and everyone shares methods and ideas. The downside to this communication is that everyone…
Categories: Green Homes

Venting a House Roof Intersecting a Porch

Green Homes 2 - Wed, 2023-09-27 10:00
What is the best way to ventilate my main roof, the bottom of which terminates under the porch roof? I’m adding exterior mineral wool insulation to the wall below, and…
Categories: Green Homes

Gable Wall “Hinges”

Green Homes 2 - Wed, 2023-09-27 09:39
I've always been confused by the 'gable wall hinge' discussions. The issue is the (alleged) hinge in a non-balloon framed gable wall where the wall top-plate meets the truss bottom…
Categories: Green Homes

Harvard Forest Seminar

Green Homes - Wed, 2023-09-27 09:00
Location: Zoom & 324 North Main Street, Petersham

"Fire to the Fuel: The Intersections of Climate, Oil, and Justice in the United States" with David Gonzalez, School of Public Health, UC Berkeley

... Read more about Harvard Forest Seminar

Categories: Green Homes

New addition in Zone7, so many questions on insulation

Green Homes 2 - Wed, 2023-09-27 08:40
Hey all,Late night dad daily reader, first time poster from Salt Lake City, Utah (zone 7, IRC 2021). If anyone has time to help me, I'd greatly appreciate it. My…
Categories: Green Homes

Exterior Insulation for Shed Roof

Green Homes 2 - Wed, 2023-09-27 07:12
I'm looking to build a shed style cottage in zone 6 in NH.  I have lots of design questions. This question is looking for ideas for providing R30 continuous insulation…
Categories: Green Homes

Are window shims needed for flanged windows?

Green Homes 2 - Wed, 2023-09-27 05:24
My simonton casements and fixed windows are going to be installed Friday and I was curious about the need for shims in flanged windows…especially the picture / fixed sash…
Categories: Green Homes

2018 IRC code interpretation

Green Homes 2 - Tue, 2023-09-26 22:40
Hello,I know this has already been addressed before, but my local inspector is hammering down that I need a vapor retarder (Class I or II) for a vented attic assembly…
Categories: Green Homes

Installation and trimming of finless replacement windows into RO

Green Homes 2 - Tue, 2023-09-26 19:44
Hello everyone,I’m doing a gut renovate on a 100-year-old house in Zone 4.I have pulled out all the windows, in most cases to completely re-do rotted-out framing.  The windows, of…
Categories: Green Homes


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