Green Homes News

what could be causing the drywall in  a small house with an ERV that is very tight to bow up between the ceiling joists ?

I have found quite a bit of info on FPSFs and there is always a concrete slab included. I'm wondering if I can pour a Frost-protected shallow footing without a…

Never terminate bathroom exhaust ducts in an attic, where added humidity can lead to mold issues and expensive repairs

Investing in sustainable home features can significantly increase the value of your property and simultaneously make your living environment more comfortable

I'm building a new house in the Dallas TX and I want to use a hybrid insulation strategy of poly-iso and mineral wool batts, but I'm struggling to understand the…

Someone posted here a few months ago a site where you could get 99th percentile dew point data. Now I can't find it.Does that rig any bells?

Hello,I have 2" RockWool exterior insulation, vertical furring strips, and horizontal furring strips and I will be using Hardie Panel on top of that. My windows are flanged and taped…

Hello everyone,Following the sage advice in this forum, I have done a number of green energy upgrades  to my house, including sealing the house really tightly, and switching my heating…

Coalition of organizations has urged the agency to require latest codes for all new homes with mortgages backed by Fannie Mae and Freddie Mac

When 2021 IRC raised insulation levels it did not make a corresponding increase to the condensation control insulation levels. Consequently 2021 has lower ratios compared to 2018. Does that mean…

I have a house in Florida (ASHRAE 1/99 temp range, 46-92 F) that previously had a ventilated attic. I had plans to turn it into a sealed attic with spray…

Location Zone 3A OKC, OK. House constructed 1979. Wall details-5/8 Sheetrock-2/4 Wood Stud Fiberglass batt (Unsure if faced or not. I know areas I have demoed in interior walls separating the…

Tools for carbon credit buyers looking for vetted data on where to invest

Hi Guys,I am building a PHIUS-certified house in Canada as a self-build project.I am finalizing the design for the window installation and I am encountering some difficulties.My wall is about…

IRC2018 defines an insulation ratio for condensation control in unvented roofs.  In note B of Table R806.5 it says, "Alternatively, sufficient insulation shall be installed directly above the structural roof…

I am working on designing my house and the garage will share one wall with the main house. The main house will have all unvented attics. The obvious answer is that…

Hi, I am hoping for some advice on insulation questions. I live in coastal (wet) South Central Alaska, zone 6, and am building a 1,200 sq ft, two-story house (one…

We live in a large (3000sq ft), old (1907) home in Northern Kentucky. Our house has three finished levels and an unfinished basement. In the summer, our A/C (Daikin Fit…

Our house's basement has an original cold war era bunker with concrete floor, ceiling, and walls, and no insulation or heating.  The bunker has a door connecting it to other…

We have a 1925 colonial in New England (Zone 5), and we had cellulose blown in most of the walls when we moved in. In one small bedroom, they ran…