Green Homes News

Best insulation for south Florida

Green Homes 2 - Tue, 2026-05-12 14:09
I am trying to determine what is the best insulation for our home in south Florida and avoid toxic materials as some of my family members are sensitive to chemicals.…
Categories: Green Homes

Flashing, trim, and siding potential disaster?

Green Homes 2 - Tue, 2026-05-12 07:27
I have a new build in zone 6a, and noticed water leaking in above a window after the siding went on. I have a contractor working on the site but…
Categories: Green Homes

Plug-In Photovoltaics, aka Balcony Solar, Seem Poised to Flood U.S. Markets

Green Homes 2 - Tue, 2026-05-12 02:00
Thanks to state-level legislative efforts, U.S. consumers will have greater access to plug-in solar devices, assuming states can remove the red tape
Categories: Green Homes

Sustainable R-value of blue carpets Dubai in eco-homes?

Green Homes 2 - Tue, 2026-05-12 00:00
Integrating blue carpets Dubai into green building projects requires focusing on low-VOC emissions and sustainable material sourcing. These high-quality carpets provide excellent thermal insulation, contributing to the energy efficiency of…
Categories: Green Homes

Q&A Spotlight—Manual J or Just a Guess? Sorting Out Heat-Loss Calculations

Green Homes 2 - Mon, 2026-05-11 02:00
A DIY builder questions his heat-loss numbers—raising bigger questions about Manual J accuracy, low-load homes, and HVAC sizing.
Categories: Green Homes

Sound blocking

Green Homes 2 - Sun, 2026-05-10 10:42
I'm so grateful for the help of the GBA community as we build our new home and I have had so many questions along the way.  At the moment I'm…
Categories: Green Homes

The joys of the more you learn, the less you actually seem to know.

Green Homes 2 - Sun, 2026-05-10 07:55
Let me get right to the point.After a little more than 15 years in the residential construction and home improvement fields, I am left with this nagging question in my…
Categories: Green Homes

Flashing window rough opening for middie install with window buck extensions

Green Homes 2 - Sat, 2026-05-09 21:47
Hi AllQuestion is regarding flashing over the Zip, which isnt flush with rough opening and the 2 x 4 window bucks.Rough opening is within 2" x 6" wall, followed by…
Categories: Green Homes

Under-driven staples over Zip sheathing

Green Homes 2 - Sat, 2026-05-09 21:07
Hello!I have a bunch of under-driven staples on Zip sheathing. Is it okay to hammer it flush, and then apply Zip liquid flash or Prosoco Fastflash over it? Pics attached.Thanks!
Categories: Green Homes

Fly ash substitutes for managing Akali-Silica Reactions: natural pozzolan and metakaolin

Green Homes 2 - Sat, 2026-05-09 14:51
I came across this article after reading about some issues with fly ash (it is harder to find with coal plants shutting down, and it is probably not good for…
Categories: Green Homes

Sill plate over foam board (retrofit)

Green Homes 2 - Sat, 2026-05-09 09:02
I’m retrofitting an old building. It has solid brick walls (no insulation, no vapor barrier) and a slab on grade floor (no insulation, no vapor barrier). I want to insulate…
Categories: Green Homes

Screw for T and G deck ceiling

Green Homes 2 - Sat, 2026-05-09 07:43
I have a second floor addition suspended over a deck. The ceiling has been spray foamed between the rafters so now I want to cover with T and G board.…
Categories: Green Homes

PGH book

Green Homes 2 - Fri, 2026-05-08 17:23
Out of stock everywhere.  What's the scoop on availability?
Categories: Green Homes

Insulating and air sealing a 1920s attic with dropped ceiling and lower addition

Green Homes 2 - Fri, 2026-05-08 08:43
Hello all, Climate zone 6. Peeling back the layers on a balloon framed 1920s kitchen addition. Attic directly above and newer extension. Diagram in pictures. Looking for opinions for insulating and air…
Categories: Green Homes

Understanding the Energy Code: Does the IECC Require Testing of All Mechanical Ventilation Systems?

Green Homes 2 - Fri, 2026-05-08 02:00
A closer look at IECC Section R403.6.3 reveals that both whole-house and local exhaust ventilation systems must be tested and verified—despite ongoing confusion in the field.
Categories: Green Homes

Advice on shed/studio roof ventilation

Green Homes 2 - Thu, 2026-05-07 23:27
Hi!I’m doing my first shed build with a family friend. We are on a tight time and budget crunch but I don’t want to create any long term issues being…
Categories: Green Homes

Tyvek or taped rigid foam as WRB

Green Homes 2 - Thu, 2026-05-07 19:15
what is the general consensus ? Do I need tyvek /typar over rigid foam to be my WRB or a carefully taped rigid foam continuous insulation will suffice ?
Categories: Green Homes

HELP! Contractor Error Causes Roof Leak in Assembly, Now What?

Green Homes 2 - Thu, 2026-05-07 14:35
Need some help to determine what a real fix looks like.  Contractor (for whatever reason) decided to rivet the metal roofing panels from the main structure to the flashing transition…
Categories: Green Homes

500-800 sf accessible house that is built to be moveable

Green Homes 2 - Thu, 2026-05-07 09:24
I have been diagnosed with a rare and aggressive sarcoma, which has dramatically altered my priorities for the next 5(?) years. I also have ME/CFS, which I suspect is being…
Categories: Green Homes

6 Ways Your Oversized HVAC System Makes Things Worse

Green Homes 2 - Thu, 2026-05-07 02:00
Oversized heating and cooling systems are common—but they come with real downsides, from poor humidity control to noisy operation and higher costs
Categories: Green Homes

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