Green Homes News

Hey hope everyone is doing well. I’m adding an addition and wanted to ask a few opinions on replacing siding on the old part of the house. Right now the…

Hello GBA community,So... How many CFM of continuous ERV extraction does it require so that nobody ever knows if anyone else dropped a stinky, no matter how potent or quick…

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…