Green Homes News

Hi,I am looking for details for a retrofit. The existing home is a pier and grade beam foundation system with 2x4 framed walls (no sheathing) with stucco exterior. The roof…

I have been looking at different wall assemblies for zone 4A.  I used Chat GPT to compare two assemblies as seen below.  I had assumed that a stick framed wall…

We're about to put a roof on our home addition which has a flat roof in California. Our roof was approved with min r-30.Underneath the base plywood rough roof structure…

Wall Assembly Advice for Off-Grid Mountain CabinHi everyone! I’m looking for some input on a wall assembly I’m planning for my off-grid mountain cabin. The cabin was built in 1986,…

Hi I have two quotes for new heat pump and air handler. I am in Boston. Bosch BOVA-36RTB-M20S vs Mitsubishi SUZ-AK36NLHZI also have a dual fuel natural gas backup that…

Has anyone compared whether it's "worth" trying to get an insulated glass garage door when a fullview glass garage door is desired. I wonder what's an educated guess for heat loss…

I had open-cell foam applied directly to my metal roof deck in climate zone 4a.  The installer insists that the 5.5" of open cell is fine being sprayed against rolled-up…

Hello, coastal Maine zone 6a. I've got 8 inch boards with 2.25 inch battens. It's all 1 inch thick spruce that I will treat with Lifetime wood treatment on the…

I am building a conditioned crawl space in the mixed climate of  western Washington State and the design for my floor system is TJIs over pony walls. I want to…

Seeking opinions /info on using a concrete free slab for a conditioned crawlspace.  Want to save cost of concrete.

Seeking opinions/info on a concrete free floor in conditioned crawlspace for a new build. Want to save on cost of concrete.

What tape can I use to cover the joint between my green plate/sill and the rim joist. I used sealant below and on top of the foam sill seal, I…

There are a few well-established monoblock air-to-water heat pump options available, such as the Spacepak Solstice SE and the Arctic EVI. That said, I'm more interested in split-type systems, as…

I've done some reading and understand that there's not a huge difference between HRVs and ERVs when it comes to moisture removal. That said, I'm leaning toward an HRV because…

I recently had a slab poured in the basement of my barn/workshop. At the perimeter it meets a preexisting short concrete wall, a shoulder wall I think it’s called. There’s a…

Water resistive barriers and a deep dive into the ASTM testing standards mentioned in the residential building code

I built my house 9 years ago in climate zone 4a.  I have a metal roof with open cell installed under the roofline of the metal at 5.5" in a…

I need your help again.I'm in the process of filling out my permit application and would like some clarity. What is the bare minimum r value for my exterior CIZone 6-6a R10…

Still building our house. Finally did a blower door test. This is my builders first time trying to build super tight because he’s never had a customer who had an…

We bought windows with LoE i89 on the 4th surface of double panes windows (with a combo of LoE 180 and LoE 272 depending on the side of the house).…