Green Homes News

Insulating an old home that has sheathing

Green Homes 2 - Thu, 2026-09-10 13:17
Good afternoon,I am currently renovating my foyer and living room on my 100 year old house located in zone 4A.  The house is balloon framed with planked sheathing, some kind…
Categories: Green Homes

How Better Room Planning Make Home Renovations More Sustainable ?

Green Homes 2 - Thu, 2026-09-10 12:22
A more sustainable home renovation does not begin with choosing recycled finishes or energy-efficient appliances. It begins much earlier, with a clear plan for how the space will actually be…
Categories: Green Homes

CDX between drywall and vapor barrier–a problem?

Green Homes 2 - Thu, 2026-09-10 10:08
Considering putting 1/2" cdx on inside side of vapor barrier, then covering with what will be painted 1/2" drywall?  Vapor sandwich issue?  I thought drywall, even painted with latex would…
Categories: Green Homes

Cold Floors?

Green Homes 2 - Thu, 2026-09-10 06:53
I have a 1970’s 2-family house, upstate NY Saratoga region, zone 5a, electric heat with a full unheated basement resulting in cold winter floors and exacerbating heat loss and heating…
Categories: Green Homes

Small House ERV Options

Green Homes 2 - Thu, 2026-09-10 06:38
I'm building a small 900 SF cabin in Northern Wisconsin and trying to figure out what makes sense for ERV / HRV and bathroom exhaust and kitchen exhaust.Its slab on…
Categories: Green Homes

The Hidden Cost of Owning Ductless Minisplits

Green Homes 2 - Thu, 2026-09-10 02:00
Ductless minisplits can get surprisingly dirty—and keeping them clean comes with a cost
Categories: Green Homes

Trimming Existing Windows for Continuous Insulation

Green Homes 2 - Wed, 2026-09-09 11:22
Good day Green Building World,I come to you with a building question from the esteemed four seasons of climate zone 6A. My question is such:I'm residing my house and adding…
Categories: Green Homes

continuous insulation above grade interior face block wall climate zone 4A existing building

Green Homes 2 - Wed, 2026-09-09 03:35
Climate zone 4A -- 1960's construction basement walkout - above grade exterior wallsI have a 2 wythe masonry wall in my walk-out basement. the outer wythe is full brick and…
Categories: Green Homes

Salvage First, Design Later: Mechanical Systems for a Low-Load Home

Green Homes 2 - Wed, 2026-09-09 02:00
Part 4 of a series on a Kansas home built from reclaimed materials examines how a high-performance enclosure reshaped the project's mechanical design
Categories: Green Homes

Interior wall sheathing options

Green Homes 2 - Tue, 2026-09-08 11:43
My question is about the suitability for 3/4" maple or similar plywood for the interior cladding of the exterior walls for a cabin in climate zone 7.   No walls…
Categories: Green Homes

Framing out concrete lower garage

Green Homes 2 - Tue, 2026-09-08 11:04
I have a lower garage with a 10' overhead door. 19.5' wide by 34.67' deep (676 SF). 3 sides are concrete, overhead door side is framed / drywall. I want…
Categories: Green Homes

Radon pipe under garage

Green Homes 2 - Tue, 2026-09-08 10:42
Hi team, New two story house with portion of second floor on top of a 20ft x 20ft garage. Garage is slab on grade while rest of house has basement.…
Categories: Green Homes

Balcony Solar Tech Advances in Europe

Green Homes 2 - Tue, 2026-09-08 02:00
As Europe continues to define and refine balcony solar, it may offer a preview for what’s to come on this side of the pond
Categories: Green Homes

Q&A Spotlight: Why Is This Airtight House So Humid?

Green Homes 2 - Mon, 2026-09-07 02:00
A newly renovated home stays cool, but summer humidity is much too high. What’s going wrong?
Categories: Green Homes

Fixing a bad hvac line

Green Homes 2 - Sun, 2026-09-06 22:33
I currently have a duct line that is leaving the basement furnace into a living room on the first floor.  A flexible 8in round duct needed to be in the…
Categories: Green Homes

Looking for real-world experience: PVC-free (TPO) vs. traditional PVC-coated solar shade fabric for a hot, south-facing window

Green Homes 2 - Sun, 2026-09-06 13:39
Hi all — hoping to tap into some collective experience before I finalize a solar shade order.The situation: I'm replacing solar shades on a large south-facing (slightly east) window on…
Categories: Green Homes

Vapour Diffusion Ports

Green Homes 2 - Sat, 2026-09-05 17:21
A bit academic for me as I'm not in the climate zones where they can be used, but I'm curious:Where the ports are used, and the permeable insulation is at…
Categories: Green Homes

Siga Majrex T&G Ceiling – Drywall or Not?

Green Homes 2 - Sat, 2026-09-05 08:01
I will soon be insulating and finishing an interior scissor truss ceiling in climate zone 7 with a vented attic above.  The bottom truss chords will be insulated with rockwool…
Categories: Green Homes

Bad Ducts = Bad Air

Green Homes 2 - Sat, 2026-09-05 02:00
Editor's note: The following article by Allison Bailes originally appeared in Fine Homebuilding #265, March 2017. While many discussions about ductwork focus on wasted energy and comfort, this article explains…
Categories: Green Homes

Houston Climate Zone 2: Hybrid vented & conditioned attic or insulate entire roofline?

Green Homes 2 - Sat, 2026-09-05 00:00
We are building a 1½-story home in Houston (Climate Zone 2) and are trying to achieve a high-performance building enclosure without using spray foam. Our current design is to insulate…
Categories: Green Homes

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