Green Homes News

Block foundation insulation/finishing

Green Homes 2 - 6 hours 18 min ago
Hello all, Has anyone had experience with exterior above ground insulation on block foundation walls, specifically in regards to products like Genstone or Nextstone? They are in the range of r3.5-4…
Categories: Green Homes

1919 house to vent or not

Green Homes 2 - 6 hours 56 min ago
We bought this house last year. We noticed a lot of granule loss from the roof and I've been doing research about that. It is mostly on the South side.…
Categories: Green Homes

Mold Potential in Wall Assembly?

Green Homes 2 - 7 hours 41 min ago
Hello,I recently built a house from Nelson Homes with their "energy wall" but have discovered that the foam board they used is Halo Interra which is quality product but is…
Categories: Green Homes

vented gable end rafter questoin

Green Homes 2 - 10 hours 35 min ago
I am insulating my vented gable roof in my workshop. What do I do with the rafter bays at the ends? They aren't vented at the ridge, but the corresponding…
Categories: Green Homes

CMU wall waterproofing

Green Homes 2 - 11 hours 26 min ago
Im building a house with a cmu crawl space foundation wall. Because of the slop of the land and soil the foundation for the garage changes in elevation by almost…
Categories: Green Homes

Spray foam insulation

Green Homes 2 - 11 hours 36 min ago
There is a disagreement between my builder and my inspector. I have spray foam open sale insulation on underside of roof decking. The engineer is saying this space should be…
Categories: Green Homes

Bedroom addition under existing porch roof insulation advice

Green Homes 2 - 12 hours 16 min ago
Looking for some "expert" advise on how to insulate the ceiling.To start off I have a pitched "flat roof". I can't remember what I measured but it is like 1-2/12.…
Categories: Green Homes

Your IAQ Monitor Doesn’t Measure Your House

Green Homes 2 - 18 hours 4 min ago
Indoor air quality varies from room to room and hour to hour. Here's how to get more useful information from a home air-quality monitor
Categories: Green Homes

Bath Fans Can Make Indoor Humidity Worse

Green Homes 2 - Thu, 2026-08-27 02:00
A bathroom exhaust fan removes moisture after a shower—but during mild, humid weather it can also pull even more moisture into your house
Categories: Green Homes

Air sealing LV conduit

Green Homes 2 - Wed, 2026-08-26 22:40
I have a client with a newish (6 or 7 years old) custom house that seems fairly tight / generally very well built.I did an investigation today because the owner…
Categories: Green Homes

Is R2.7 enough for a thermal break for a basement cement floor

Green Homes 2 - Wed, 2026-08-26 12:24
I am looking to insulate my basement floor to provide a thermal break. There is 6 mil visqueen under the cement, but no insulation. I don't want to add more…
Categories: Green Homes

Modern “balloon framing” and thermal bridging

Green Homes 2 - Wed, 2026-08-26 11:08
Hello. Has anyone actually built a wall like this: http://blog.lamidesign.com/p/swedish-platform-framing-info.html
Categories: Green Homes

Garage conversion

Green Homes 2 - Wed, 2026-08-26 09:30
I have clients who want to convert a 23x23 garage into living space heated and cooled by minisplit. The current assembly is 2x4 walls with T1-11 on the outside —…
Categories: Green Homes

International Flashing Awareness Day

Green Homes 2 - Wed, 2026-08-26 02:00
How a fake holiday, a cheeky T-shirt, and a frustration with rotten walls grew into an annual campaign for better flashing details
Categories: Green Homes

Mixed foundation materials (Clay and Concrete blocks): how insulate for remodel?

Green Homes 2 - Tue, 2026-08-25 16:42
Apologies in advance if this is wrong forum We have a brick, 1924 home Des Moines, Iowa (zone 5A).Hot and humid in the summer, very cold in the winter.Starting stateGutted the…
Categories: Green Homes

Bathroom fan exhaust near fresh air intake

Green Homes 2 - Tue, 2026-08-25 10:39
Can you have a bathroom fan ductwork exhaust outside next to a fresh air intake for the HVAC? I'm guessing ideally you wouldn't want that right next to each other,…
Categories: Green Homes

1:12 Unvented Roofing

Green Homes 2 - Tue, 2026-08-25 09:01
I’m in zone 4A with an unvented attic and a 1:12 single slope roof. I’m planning 3” polyiso above the OSB roof deck and fiberglass batts in the 2x10 16OC…
Categories: Green Homes

Crawl Space/Slab insulation assembly questions

Green Homes 2 - Tue, 2026-08-25 06:31
Long story short once we started digging and had to dig deeper than expected, our foundation contractor and engineer convinced us to do a crawl space instead of a slab…
Categories: Green Homes

This New Lending Tool Lets Homeowners Make Energy Upgrades with No Money Down

Green Homes 2 - Tue, 2026-08-25 02:00
Lowtility accounts for total home value, with help from updated home appraisal standards
Categories: Green Homes

CEI – Windows innie vs outie vs ? in a wildfire area. Which to choose?

Green Homes 2 - Mon, 2026-08-24 16:38
I'm really grateful for this GBA article about different approaches to integrating windows into a home with Continuous Exterior Insulation  https://www.greenbuildingadvisor.com/article/strategies-for-combining-flanged-windows-with-exterior-insulation-field-applied-extension-jambsOne other consideration fire resistance.Having CEI insulation (eg. Rockwool) around…
Categories: Green Homes

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