Green Homes News

Waterproofing front porch that goes over crawlspace?

Green Homes 2 - 1 hour 55 min ago
My newly-purchased home has a weird construction detail: the front porch goes over the crawlspace.  Before purchase, we were made aware that the previous waterproofing under the concrete had failed, so…
Categories: Green Homes

Intelligent Artificial Design

Green Homes 2 - 5 hours 47 min ago
HEY! Anybody out there tried to have one of the AI programs generateall or most of the design and plans for a home yet? Is AI sophisticatedenough to get it…
Categories: Green Homes

Slim ducted minisplit zones?

Green Homes 2 - 7 hours 22 min ago
We are planning to build a small cabin in Maine. Upstairs will have two small bedrooms. A rough calculation shows that they will only need about 2K BTU each for…
Categories: Green Homes

A Roof-First Design Approach to Building a Net-Positive Energy Home

Green Homes 2 - 14 hours 14 min ago
How a retired couple in Lanesboro, MN, realized their “Forever Home”
Categories: Green Homes

Mini Splits: Best practices for infrequent use?

Green Homes 2 - Mon, 2026-03-30 13:42
I live somewhere with fairly mild summers and a well insulated house, and recently got new mini splits. I anticipate maybe using my mini splits a week or two at…
Categories: Green Homes

“Carpenter’s gap” above fascia for attic venting.

Green Homes 2 - Mon, 2026-03-30 09:11
Mid-century houses used a "carpenter's gap" above the eave's fascia board for the lower attic vent. The asphalt shingles and starter course extend over it to direct rainwater into the…
Categories: Green Homes

Q&A Spotlight -A Pretty Good Wall for Zone 6

Green Homes 2 - Mon, 2026-03-30 02:00
A builder designing a Pretty Good House in Maine wants to know if a vapor-open wall with wood-fiber insulation the right approach—or are there better options?
Categories: Green Homes

Retrofit: How do we tie-in existing footers and sill plate to an insulated plywood slab on grade?

Green Homes 2 - Sun, 2026-03-29 14:37
We hope to put a concrete-free floating ply floor in our slightly below grade walkout basement. Our contractors are not experienced with this floor, and we would like to provide…
Categories: Green Homes

hybrid insulation envelope for fire codes

Green Homes 2 - Sun, 2026-03-29 07:26
Climate zone 8, I would like to use 2 inch of ROXUL inside 4" closed cell spf and then 1"x6" tongue and groove board lumber in my cabin. Can anyone…
Categories: Green Homes

Light Shelves

Green Homes 2 - Sat, 2026-03-28 09:42
I've heard of commercial buildings that utilize "light shelves", either interior or exterior horizontal surfaces that direct natural light deeper into a room, and I wonder if anyone has seen…
Categories: Green Homes

Fresh-R HRV

Green Homes 2 - Sat, 2026-03-28 08:06
Has anyone tried the Fresh-R HRV units? I learned about them from Josh Salinger's comment on this Q&A Spotlight, which as far as I can see, is the only place…
Categories: Green Homes

Attic half conditioned half not

Green Homes 2 - Fri, 2026-03-27 14:02
For new build considering having a portion of the attic conditioned for hvac equipment and the rest unconditioned in an effort to save on the cost of a fully conditioned…
Categories: Green Homes

Tiny crawl space ventilation

Green Homes 2 - Fri, 2026-03-27 13:51
Help me weigh options here.Looking at a crawl space for a 20 year old small addition. It was constructed difficult to access but was recently found to be very problematic…
Categories: Green Homes

A Passive House as Proof of Concept: Wayne Turett’s Greenport Living Laboratory

Green Homes 2 - Fri, 2026-03-27 02:00
An architect sets out to build his personal home as a hands-on experiment in Passive House performance
Categories: Green Homes

Energy efficiency payback periods – any reassessment with scenarios involving much higher energy prices?

Green Homes 2 - Thu, 2026-03-26 13:02
Previously it was generally accepted in America that many energy efficiency building strategies could reduce operating costs, but generally wouldn't pay off quickly. So they have been considered more for…
Categories: Green Homes

Plenum Truss-Keepin’ the Ducts Inside

Green Homes 2 - Thu, 2026-03-26 02:00
A plenum truss is one method to keep ductwork inside the conditioned space of a home
Categories: Green Homes

Poly Foam Board and fiberglass batt

Green Homes 2 - Wed, 2026-03-25 22:43
I'm in South Louisiana building new home, 2x6 wall construction.Considering installing 2" poly foam board, then r-13 faced fiberglass batt in exterior wall. The siding I'm using is rated as…
Categories: Green Homes

Cantilevered Floor – Comfortboard Outsulation?

Green Homes 2 - Wed, 2026-03-25 20:41
I'm working to air seal & insulate a small cantilevered floor system in climate zone 4C (western WA). It's about 6'x8' and framed with 2x8s, between which is some unfaced…
Categories: Green Homes

Kebony Furfurylated wood

Green Homes 2 - Wed, 2026-03-25 20:08
One of the glossy magazines I get had a spread on a house sided with a product called "Kebony," which is a brand of furfurylated wood. You can read about…
Categories: Green Homes

Home Battery Backup Systems: An Overview of Today’s Options

Green Homes 2 - Wed, 2026-03-25 02:00
Residential battery systems are rapidly gaining popularity as homeowners look for backup power, energy savings, and resilience during outages. Here’s an overview of the different types on the market.
Categories: Green Homes

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