Green Homes News

This study found multisplit heat pumps with 4+ heads only averaged a cop of 1.12/1.52 while single zone units averaged 3.23.

Green Homes 2 - Sat, 2023-12-30 03:46
Interesting data in how inefficient an oversized multisplit is compared to single zones. Authored by Cadmus – Spring 2022 E4TheFuture co-funded a Cold Climate Air Source Heat Pump Building Electrification Study, researching…
Categories: Green Homes

Interior Foundation Insulation

Green Homes 2 - Sat, 2023-12-30 00:55
Hello all,I live in climate zone 6, and am looking to insulate the interior walls of my basement with EPS. This won't be a finished space but there will be…
Categories: Green Homes

Anyone use their basement for a master suite? Is it a bad idea?

Green Homes 2 - Fri, 2023-12-29 23:55
Happy holidays, hope everyone is well. Been circling around the idea of turning patio space under my deck into a master bedroom. About 2 years ago I finished my small…
Categories: Green Homes

Airtight attic floor and humidity

Green Homes 2 - Fri, 2023-12-29 23:05
Hi everyone,     I am new here, I just recently built my own home in CT. Here we are climate zone 5A (cool humid). Mostly cold dry winters, but as…
Categories: Green Homes

Band sill (rim joist) insulation with a finished basement.

Green Homes 2 - Fri, 2023-12-29 19:25
Firstly, I'd like to thank all the contributors on this forum.  You've expanded my knowledge base more than I can measure, and I offer all the gratitude that I can.…
Categories: Green Homes

Vapor retarder for shop wall

Green Homes 2 - Fri, 2023-12-29 15:43
I’m a retired design build contractor building a shop for future projects. I expect it to have a second life as an ADU when I get too old so I’m…
Categories: Green Homes

Exterior siding system and interior stud bay strategy for 1885 house—what would you recommend?

Green Homes 2 - Fri, 2023-12-29 13:32
I am renovating my 1885 house (first time home owner!). I'm looking for recommendations on how to approach my exterior wall / siding system and interior wall system.My goals:- Have…
Categories: Green Homes

Live Edge Beam VT Cathedral Roof Insulation Redo

Green Homes 2 - Fri, 2023-12-29 11:44
Hello,Long time reader who recently purchased a 1971 Vermont home in Zone 6 (north of Brattleboro). The main section of the house is open concept Kitchen, Dining, and Living Room…
Categories: Green Homes

HVAC design complexity with custom masonry heater (cold climate)

Green Homes 2 - Fri, 2023-12-29 10:44
When we set out to build a home, did we expect to spend 6 figures on HVAC, incl. the masonry heater? No, no we did not. We need to start…
Categories: Green Homes

moisture resistant drywall in a tight house?

Green Homes 2 - Fri, 2023-12-29 05:15
I am almost ready to insulate and drywall my house in the mixed humid climate 4a of central NC.  One of the drywallers has recommended that I use moisture resistant…
Categories: Green Homes

Hydrogen and Replacing Fossil Fuels

Green Homes 2 - Fri, 2023-12-29 02:00
A color-coded guide to the most abundant element in the universe, hydrogen, which is poised to play a large role in phasing down fossil fuels and cleaning up the grid
Categories: Green Homes

Cape Cod roof insulation question

Green Homes 2 - Thu, 2023-12-28 20:17
Hello,I have a 1950s Cape Cod house in New York Zone 5/6. It has 2x6 rafters. Poorly insulated. The plan is to ultimately put 4'' of foam board on top…
Categories: Green Homes

Proper assembly for below grade exterior shower walls

Green Homes 2 - Thu, 2023-12-28 15:07
I'm wrapping a largely-DIY basement finishing project in Michigan (Zone 5A) that includes a full bath w/ stall shower and am in need of guidance re: wall assembly and waterproofing…
Categories: Green Homes

Roofing Materials Ranked by Environmental Impact

Green Homes 2 - Thu, 2023-12-28 11:35
Hello and thank you for your input!We've had several clients ask about the environmental impact of various roofing materials, and I'm having trouble finding a reliable source of information as…
Categories: Green Homes

Hot water heat pump and wood stove

Green Homes 2 - Thu, 2023-12-28 10:48
A main concern I see arising from the use of a hot water heat pump is it's cooling effect in winter on the surrounding room it is located in. Could…
Categories: Green Homes

Attic ventilation connected to rain screen *with no overhang roof design* in a cold climate?

Green Homes 2 - Thu, 2023-12-28 07:57
I am already distraught about building a home with no overhangs, please do not explain how incredibly stupid it is - I am aware. Our architect said “in the end…
Categories: Green Homes

Insulating basement after interior waterproofing has been completed(In Toronto)

Green Homes 2 - Wed, 2023-12-27 23:22
Hi everyone, Read a few very helpful answers to questions around insulation and hoping to get some clarity. I had to recently waterproof our basement after finding mould and water issues. Upon…
Categories: Green Homes

Crawlspace encapsulation with reclaimed polyiso

Green Homes 2 - Wed, 2023-12-27 23:07
Hello and thanks to all for an amazing community of helpful folks. I am building a ranch style home over a 4ft Crawlspace in zone 6a. My question pertains to…
Categories: Green Homes

STEEL Structural Insulated Panels

Green Homes 2 - Wed, 2023-12-27 14:26
I work for Structall Building Systems. I just bought a membership here at GBA, I have to say I am surprised by the lack of SIPs in the articals and…
Categories: Green Homes

Are MERV ratings per-pass through filter or cumulative?

Green Homes 2 - Wed, 2023-12-27 12:23
A MERV13 filter removes greater than 50% of particles sized 0.3 to 1.0um per the chart in the article below. If a particle in this range passes the first time…
Categories: Green Homes

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