Green Homes News

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…

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…

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…

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…

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…

Experts discuss problems with residential HVAC systems, as a first step toward defining solutions

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…

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…

The worst pollutants for indoor air quality ranked based on the effects to human health

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…

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…

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." …

A case study in making Passive House construction pencil out for market-rate multifamily housing

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…

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…

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,…

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…

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…

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…

Panasonic OASYS: Can Air-Only Mixing Deliver Whole-Home Comfort?