Green Homes News

Rockwool and vapor barrier?

Green Homes 2 - 6 hours 5 min ago
I've come across conflicting answers when it comes to whether or not an interior vapor barrier should be used in conjunction with Rockwool.  This forum seems thorough so I thought…
Categories: Green Homes

Cold Climate Envelop Counterpoint – Joe Lstiburek Article

Green Homes 2 - 7 hours 38 min ago
Joe makes the point that houses historically built in cold climates  "2x6 wall with R-5 foam sheathing coupled with unfaced fiberglass batt cavity insulation covered with an interior 6 mil…
Categories: Green Homes

conditioned space over unconditioned garage – retrofit

Green Homes 2 - 13 hours 6 min ago
I have a structure with an unconditioned garage with conditioned space above and to one side. It's down to the studs at the moment. And the way it was built…
Categories: Green Homes

Dehumidification and Hygric buoyancy

Green Homes 2 - 13 hours 31 min ago
How effective is dehumidification in a space with little air movement? Will a dehumidifier work in an attic to reduce the levels near the peak if it is located on…
Categories: Green Homes

Preferred option for slab edge insulation

Green Homes 2 - 17 hours 18 min ago
There are a lot of people with many decades of experience on this website. With this question I'd like to tap in, do a bit of a survey, and get…
Categories: Green Homes

Our Current HVAC Mess

Green Homes 2 - 21 hours 38 min ago
Experts discuss problems with residential HVAC systems, as a first step toward defining solutions
Categories: Green Homes

Insulation – Roxul versus Fiberglass

Green Homes 2 - Thu, 2025-12-04 21:58
We are building in zone 3B with a conditioned attic. Does Roxul ComfortBatt R38 insulation at the roof deck and R21 in the exterior walls perform better than fiberglass insulation of…
Categories: Green Homes

metal framed basement window

Green Homes 2 - Thu, 2025-12-04 17:09
We are refinishing a basement and I can't figure out how to go about handing the basement window. We want to change the windows but after we tore out all…
Categories: Green Homes

The 6 Worst Indoor Air Pollutants

Green Homes 2 - Thu, 2025-12-04 02:00
The worst pollutants for indoor air quality ranked based on the effects to human health
Categories: Green Homes

Interior double stud wall retrofit – details

Green Homes 2 - Wed, 2025-12-03 23:45
Hello,  thanks for this great resource Q&A forum.  Thanks in advance for your input, and I hope this is entertaining!  If you have a minute, please tell me if I'm…
Categories: Green Homes

Approximate heat load calculation for garage with interior design temp of 40F

Green Homes 2 - Wed, 2025-12-03 20:30
Can anyone here point me towards a resource or give an approximate way to calculate the heating load for a garage with an interior design temperature of 40F? Is there…
Categories: Green Homes

Adding Insulation to Superior Precast Walls

Green Homes 2 - Wed, 2025-12-03 06:31
Hello all, when I built my house I used Superior Walls precast/insulated walls.  These are essentially a panel with a 1.75" thick concrete shell and a 8" deep concrete "stud." …
Categories: Green Homes

Cost-Effective Passive House for Multifamily: Lessons from EcoFlats at Log City

Green Homes 2 - Wed, 2025-12-03 02:00
A case study in making Passive House construction pencil out for market-rate multifamily housing
Categories: Green Homes

AC Compressor install in crawl space

Green Homes 2 - Tue, 2025-12-02 16:40
I'm looking for solutions for installation of an AC compressor in a crawl space. I'm designing a renovation of a condominium and HOA states that:2.15.3 Although no owner has yet done…
Categories: Green Homes

Thoughts on insulating my dad’s shop

Green Homes 2 - Tue, 2025-12-02 13:29
I have a pole shed (shop) without sheathing on exterior under steel siding.  I'm planning to remove the vinyl faced MBI (condensation blanket) underneath exterior girts (where it's pinched between…
Categories: Green Homes

Slab edge insulation, possible foam board over osb walls.

Green Homes 2 - Tue, 2025-12-02 13:09
I live in southern Kentucky and my house is pretty hard to heat and cool. It has a mix of 2x4 and 2x6 walls that have drywall insides and osb,…
Categories: Green Homes

Unconditioned attic with ice damming

Green Homes 2 - Tue, 2025-12-02 11:48
Greetings all, Alright let me clear the conditioned air before I get raked over the coals here hahaha. I am in northern Indiana so climate zone 5A, and I committed…
Categories: Green Homes

Ventilation in a tiny cabin

Green Homes 2 - Tue, 2025-12-02 11:27
Hello! My wife and I recently built a tiny cabin in Northern Arkansas and it's our first time designing and building something like this. We've been renting it out for…
Categories: Green Homes

Insulating and air sealing rim joist and sill plate in older home, partially finished basement

Green Homes 2 - Tue, 2025-12-02 11:13
House Info: House was built in 1960, we purchased 2 years ago in February. Climate zone 6A. Block wall foundation. There is a basement below half the house that is…
Categories: Green Homes

The OASYS House

Green Homes 2 - Tue, 2025-12-02 02:00
Panasonic OASYS: Can Air-Only Mixing Deliver Whole-Home Comfort?
Categories: Green Homes

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