Green Homes News

Airtight LED Slim Downlights Under Blown in Cellulose

Green Homes 2 - Thu, 2022-09-22 09:17
Hey everyone!I plan on using Airtight Self-Gasketing LED downlights in my drywall ceiling, and will have blown in cellulose on top of them.When it comes time to replace the downlights,…
Categories: Green Homes

An Undersized Minisplit Heat Pump

Green Homes 2 - Thu, 2022-09-22 02:00
How well does it handle cooling loads during a heat wave?
Categories: Green Homes

Trying to model heating and cooling loads: EnergyPlus vs Manual J

Green Homes 2 - Wed, 2022-09-21 16:13
Hello,Background: I am trying to model the heating and cooling loads for my future home using EnergyPlus. I want to investigate different building construction methods and window options that would…
Categories: Green Homes

JFK Jr. Forum

Green Homes - Wed, 2022-09-21 16:00
Location: 79 JFK St., Cambridge

Join the HKS Institute of Politics as the prime minister of Croatia, Mr. Andrej Plenković, reflects on Croatia's path from its war of independence to becoming a fully integrated member of the EU and NATO.... Read more about JFK Jr. Forum

Categories: Green Homes

Insulation, Vapor Barrier, Air Barrier for Pole Barn Conversion

Green Homes 2 - Wed, 2022-09-21 11:21
I covet any and all advice/encouragement. I am currently in analysis paralysis mode... Due to this mode, I am (literally) still living in a tent. I'm in zone 3a in…
Categories: Green Homes

ENVR E-181. Sustainability Solutions for Small Businesses

Green Homes - Wed, 2022-09-21 11:08
Semester: N/A
Categories: Green Homes

ERV for a tiny space?

Green Homes 2 - Wed, 2022-09-21 10:43
I'm currently finalizing the contract with my GC for finishing a currently-unfinished in-law space over a 2-car garage (SE PA, border 4A/5A)It's about 400 sq ft with vaulted ceilings, and…
Categories: Green Homes

Clearances for Wood Stove

Green Homes 2 - Wed, 2022-09-21 10:10
We recently replaced our oil boiler with a heat pump and now need a heat source for our basement. Trying to decide between pellet stove and wood stove. The previous…
Categories: Green Homes

Heat Strips Required as backup for Air Source Heat Pump?

Green Homes 2 - Wed, 2022-09-21 09:57
Building a home in Zone 6B (cold and dry), and installing a Daikin VRV Life electric air source heat pump, which is rated to -4F. I noticed a line item…
Categories: Green Homes

Going All Electric in a Cold Climate

Green Homes 2 - Wed, 2022-09-21 02:00
Data-supported strategies and systems for transitioning away from fossil fuel and toward all-electric energy
Categories: Green Homes

Rigid foam below sheathing in unvented attic

Green Homes 2 - Wed, 2022-09-21 00:13
The awesome GBA article, "How to Insulate An Unvented Low Slope Roof Assembly?" and PNNL both advise to use spray foam directly below the sheathing for an unvented attic if…
Categories: Green Homes

Mineral Wool as a Fire Barrier

Green Homes 2 - Tue, 2022-09-20 20:28
Zone 5 - New Construction.I'm thinking of a flash and batt application for my roof line to save some money versus all closed cell. The contractors I talk to are…
Categories: Green Homes

Advice on Taping Exterior Polyiso

Green Homes 2 - Tue, 2022-09-20 17:35
I'm in the process of putting up 2" exterior polyiso around a 24' x 32', two story house in climate zone 5 (central NH). There's a rain screen between the…
Categories: Green Homes

Growth Lab Seminar

Green Homes - Tue, 2022-09-20 14:30
Location: B-500, Bell Hall, Belfer Center, 79 JFK St., Cambridge

Doyne Farmer, Director of Complexity Economics Institute for New Economic Thinking, University of Oxford, will present "A Fast Green Energy Transition is Likely to be Cheaper than Business as Usual."... Read more about Growth Lab Seminar

Categories: Green Homes

Climate Justice Design Lecture

Green Homes - Tue, 2022-09-20 14:00
Location: Zoom

Join the Climate Justice Design Fellowship group for a presentation by Margaret Kosmala.... Read more about Climate Justice Design Lecture

Categories: Green Homes

How to protect above-grade ICF / can I (a homeowner) do it myself?

Green Homes 2 - Tue, 2022-09-20 13:56
Hi there. My husband and I moved into our newly built energy efficient house about a month ago. We live in Zone 5 and have a slab-on-grade foundation. Our stem…
Categories: Green Homes

Head flashings under gable overhang necessary?

Green Homes 2 - Tue, 2022-09-20 13:03
When windows or doors are protected by a gable roof overhang, can I exclude the head flashings?  In this instance, rain would have to drive at an angle greater than…
Categories: Green Homes

Insulating Gap Between Exterior and Interior Foam

Green Homes 2 - Tue, 2022-09-20 12:45
Hi all, I have an insulation question. My house was planned as a slab inside 5' frost walls (zone 6 southern coastal maine). After walls were poured the builder at…
Categories: Green Homes

How to keep lake from forming in conditioned crawlspace during and after construction.

Green Homes 2 - Tue, 2022-09-20 11:15
Hi, I am in zone 4a.Trying to figure out how to prevent conditioned crawlspace from becoming swimming pool while under construction and after completion of house?Since I am building by…
Categories: Green Homes

Cathedral Ceiling Venting

Green Homes 2 - Tue, 2022-09-20 06:15
Hello. My house is now finished but it came to my attention that my cathedral ceiling (with no attic over) is neither spray foamed or has rigid board and is…
Categories: Green Homes


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