Green Homes News

I'm looking at these 2 details from the library. The monolithic slab shows a vapor barrier above the insulation, wrapping around the footing. The second image with the non-structural slab…

Understanding window performance, durability, operation, and design to make the most of your window budget.

I read the comments, and the free part of the article headlined "New Zero Frost Heat Pump Designed to Operate Continuously in Arctic Conditions, TerraVis Energy’s AetherLux ZeroFrost units will…

Greetings - apologies if this is not the appropriate place to post this but I came here looking for a GBA directory of builders and couldn't find anything. I'm an…

TerraVis Energy’s AetherLux ZeroFrost units will hit Canadian markets later this year

Hi all, I'm designing and building an a-frame cabin in central Missouri. The cabin will be used intermittently throughout the year, best case for usage is 2-4 days at a…

Insulation without demolition—what’s the best, minimally invasive strategy to increase insulation in walls?

Really stumped by this. I have a handful of attic baffles that were installed as shown below. There is a large gap between the bottom of the baffle and the…

I'm planning use either XPS or EPS (reclaimed hopefully) for exterior insulation, but I am concerned about insect intrusion.  I'd love to use Mineral wool instead, but am trying to…

Any ideas what could be causing these large cold spots on thermal imaging? The picture shows the edge of an upstairs room. In the attic above, there is visibly plenty…

Hi,We have a 200 year old house in upstate new york that is 1400 sq ft between 2 floors, with a simple gable roof. We are redoing the roof, and…

A friend has a single-story house in climate zone 7 with an older, non-condensing natural gas boiler. The home is heated with hydronic baseboards on a single zone. There is…

Does anybody know how to determine the F-factor of a slab-on-grade with insulation on TOP?I'm trying to find/calculate the F-factor of the assembly shown in the attached image (with and…

Hi. I’m renovating a bathroom in Florida and I’m trying to make sure I’m not building a mold trap which is a common case down here. One wall of the tub…

I am in the process of having my engineer design a home on a frost protected shallow foundation using monoslab, which in my cz 6, I can do a 12…

Hello GBA friends,I'm working on details for a new construction build in WA climate zone 6. Cold and dry area. Single story, slab on ground floor. See detail attached. This stem…

Hello GBA friends, I'm finalizing designs for a new consruction residence in WA. Zone 6. Cold dry high snow area. Details attached show where I am at with roof/ceiling plan. Questions:1)…

Hi All, Would there be a downside to using polyiso "roof" insulation for crawlspace walls and rim joists, and for the rim joists inside the house? This is the type that…

Early coordination with energy modelers and mechanical designers turns Passive House goals into buildable strategies

The National Home Performance Conference is April 13-16, 2026