Green Homes News

Hi All,I am trying to understand IBC 5.2.9 "Where only air-permeable insulation is installed directly below the structural roof sheathing, air shall be supplied at a flow rate....etc etc.Does this…

Hopefully a quick question:I have a steel building with steel girts and purlins.  I already have 1" continuous XPS on the outside of the wall, but figured I would fill…

Hi All,Does anyone have opinions, experience, or data regarding the pros/cons of putting a cross-batten grid of ~a few inches, vs. a much tighter 'air gap' using a product like…

Our client asked for deeper-than-typical interior window sills so we're adding a 2x4 wall to the interior of the structural 2x6 walls. By code, R-21 batts in the 2x6 wall…

Hello,Having issues with downloading the autocad detail for the double-stud wall: vaulted ceiling.  I also was unable to insert the PDF download into Revit, wondering if anyone is having this…

Initial Attic Condition - Attic has about 2-3 inches of clumped up blown-in insulation between joist and low-ish gable end vents on the east and west ends. I think you'd…

Haven't seen this covered on Green Building Advisor yet.Could be a game-changer if it's real.I can't link to it because I know from experience my post will get rejected, so…

My name is Mael and I am in climate zone 5 (western Massachusetts).I built my home over a year ago with the following wall assembly detail going from outside in:-29…

Will a non-standard strategy for radon mitigation work on an older home?

We’re installing Hardie trim with a standard Hardie siding assembly. Our architectural detail shows a triangular-shaped piece above the first course of siding. The architect mentioned this is a piece…

I am a 3rd year architecture student designing a hypothetical project of a tiny house located in Phoenix, Arizona, Zone 2b. I am experimenting with CMU as my material of…

I'm in zone 6A, and have a late 19th century shed that I use as a woodworking shop.The roof assembly is shingles against sheathing, and there is no roof venting.Rafters…

Photo attachedThe entire gable section of this new build will utilize 24" chord trusses. The idea is to R60 the whole roof as a vaulted, vented assembly. Is it ok…

Hi again,  I hope it is acceptable here to ask this second question somewhat relating to the first.  I thought they should be separate.On one side of my home, I…

Hi, and thank you in advance for any insights.  I am an owner builder/ DYIer wanting to add another addition to the original structure of the home I remodeled and…

Hi all, getting ready to install a post and beam style floor system using engineered inclined screw connections.  Per the manufacturer, the screws (galvanized) are intended for dry service conditions…

Good afternoon,I’m trying to lock in my insulation plan on my renovation. The building an old post and beam structure with a full dormer framed on one eve wall. I…

A small crew builder in my jurisdiction, locally considered by many to be the best, doesn't use a WRB on new builds.  They advise clients that WRBs cause rot and…

QUESTIONS:  How much will this radiant barrier setup help, and should I stop air movement in the air gap by putting plywood between the metal panels and the battens?DETAILS:1980 house…

I don't know if this changes for GBA Prime members, but the search on this web site does not find the comments I've posted when searching by my "tag".   Is…