Green Homes News

Deflection performance in floor trusses compared to other joist types

Green Homes 2 - Sat, 2023-01-14 20:18
Looking for any input on this. In planning a build, we're looking to achieve a high deflection rating, such as L/720 for super stiff floors. The preference is to go…
Categories: Green Homes

Best plane for air barrier in a double wall, and easiest way to frame said wall

Green Homes 2 - Sat, 2023-01-14 14:13
Please see the attachment. I’m working on a double wall assembly design and I’d like people’s thoughts on two issues, air sealing and framing the double wall. My experience is…
Categories: Green Homes

Need new boiler, considering mini-splits & HPWH instead

Green Homes 2 - Sat, 2023-01-14 11:57
Hello All - we have a ~1700 SF place (not counting a full unfinished basement) in NH that has an old 3 zone oil boiler which is starting to leak. …
Categories: Green Homes

Lochinvar Boiler Sizing?

Green Homes 2 - Sat, 2023-01-14 10:27
Zone 4 (York, PA) Finish carpenter currently working on updating our personal home, this is our first winter here and the gas bills are as bad as I expected.  I ran…
Categories: Green Homes

Air sealing with 1/4in open cell spray foam

Green Homes 2 - Sat, 2023-01-14 09:36
I know it's not closed cell, i know its not 2in minimum, but if i spray a mist with a wide spray nozzle and standard door and window foam to…
Categories: Green Homes

Zip R Sheathing – Climate Zone 6

Green Homes 2 - Sat, 2023-01-14 07:59
I received great feedback from my question about crawl spaces so I'm back with another question.  Building a new home in Vermont (Climate Zone 6) and learned that Vermont Efficiency…
Categories: Green Homes

ROI and comfort gain of deeper walls when using ZIP R6

Green Homes 2 - Sat, 2023-01-14 04:51
Zone 5Retrofitting a porch, 23’x15’, sloped roof, to create a four-season room. Three exterior walls, lots of glass (continuous rows of windows and patio door, with knee wall and wall…
Categories: Green Homes

Leaving 2nd floor and basement unfinished to improve house envelope

Green Homes 2 - Fri, 2023-01-13 22:41
Due to budget limitations, I am considering leaving the 2nd floor and basement unfinished rather than cheap out on the house shell. The builder I am working with is advising…
Categories: Green Homes

Optimal Building Exit for Septic System

Green Homes 2 - Fri, 2023-01-13 18:12
Hello,I am working on the septic system placement for my house.  There are basic distance requirements in Idaho from the well of 100 ft. (partial circle on attached image) and…
Categories: Green Homes

HVAC Reality Check: Are Duct Systems Dumb or Essential with Corbett Lunsford

Green Homes 2 - Fri, 2023-01-13 17:34
Here's a very good video from Corbett Lunsford's Youtube channel "Home Performance" where he discusses the advantages to using a ducted air system.
Categories: Green Homes

The Retrofit Podcast: Episode 1, Josh Salinger

Green Homes 2 - Fri, 2023-01-13 14:22
We kick off our new podcast series with a conversation about energy retrofits with Birdsmouth Design-Build's Josh Salinger
Categories: Green Homes

Working with XPS and ISO boards: Best glues, tapes, and circular saw blades

Green Homes 2 - Fri, 2023-01-13 13:07
The title almost says it all:- On an unvented roof, if I were to have a layer of polyiso or XPS (2"), topped by a layer of XPS (2"), which…
Categories: Green Homes

Permeable building in a cold climate

Green Homes 2 - Fri, 2023-01-13 13:01
Hi - We are renovating a 1940 brick house in climate zone 4, Quebec, Canada. The question is about the necessity of a vapor barrier or vapor retarder in our…
Categories: Green Homes

Gree 1 way cassette high ceiling

Green Homes 2 - Fri, 2023-01-13 10:47
Does anyone know if these gree 1 way cassette can operate if the ceiling height is 18-20 feet tall?
Categories: Green Homes

Can we put Rockwool up against the roof deck?

Green Homes 2 - Fri, 2023-01-13 10:47
We have a 100+ year old Dutch colonial house in Climate Zone 4 that we're renovating. We have put R30 Rockwool batts in the attic flooring (without Membrain underneath)  that…
Categories: Green Homes

Air sealing switch and outlet boxes

Green Homes 2 - Fri, 2023-01-13 09:32
Has anyone found an exceptional gasket for air sealing duplex outlet and switch penetrations in exterior walls?  The foam gaskets that are pre-punched for multiple types of outlet and switch…
Categories: Green Homes

Why Pipes Freeze

Green Homes 2 - Fri, 2023-01-13 02:00
The science behind frozen water pipes and recommended preventative measures
Categories: Green Homes

Factors affecting CoP of Heat Pump (Air-to-Water)

Green Homes 2 - Thu, 2023-01-12 20:21
Hello thereSo I've had my air-to-water heat pump system doing its thing for nearly a year now, seems to work great. This winter I'd just like to tweak things a…
Categories: Green Homes

Rim joist insulation question

Green Homes 2 - Thu, 2023-01-12 17:50
Hello, I live in climate zone 6a (coastal Maine).I'm in the process of installing insulation in the rim joist in my crawl space. I have cut and attached pieces of…
Categories: Green Homes

Intellibalance-100 with Boost: Actual Experience using for Bathrooms?

Green Homes 2 - Thu, 2023-01-12 17:00
Hi All,Read the past posts I could find on the Intellibalance and have a friend who loves his.  Since the boost feature came out, who has experience using it as…
Categories: Green Homes


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