Green Homes News

Basement air gap between CI and framing

Green Homes 2 - 9 hours 35 min ago
We are redoing a basement. We ripped out the old furring strips, vapor barrier sheeting, and the fiberglass underneath. The fiberglass was seperated from the concrete wall with cross-strapping, but…
Categories: Green Homes

Exterior insulation

Green Homes 2 - 11 hours 17 min ago
Hello I have a 1960ish house in climate zone 6/7 with 1/2 inch plywood 2x4 walls r13 foil faced fiber glass insulation in walls (and the ceiling). Some walls have…
Categories: Green Homes

Rim joists

Green Homes 2 - 12 hours 1 min ago
Location: MinnesotaLooking for advice on insulating hard to access and non-uniform sized rim joist surfaces.  Home built 1949.Extremely difficult in some areas to get foam board in place to then…
Categories: Green Homes

Mitsubishi Central Ducted Behavior

Green Homes 2 - 13 hours 30 min ago
Have a relatively new SVZ/SUZ 24K BTU (454B) air handler installed. I noticed with electrical monitoring that sometimes it will jump from a baseline of 60w (fan low) to 250w…
Categories: Green Homes

Duct HP water heater to return plenum

Green Homes 2 - 16 hours 17 min ago
I'll be installing a heat pump water heater in the conditioned basement of a zone 5b (Dry) single family home. The water heater will be in a mechanical room (not…
Categories: Green Homes

Flooring underlayment choice for above conditioned crawl space

Green Homes 2 - 16 hours 44 min ago
Hi all,This is a bit of a flooring + building science question. We are getting ready to install new engineered wood floors, likely 6” wide plank, on top of a 3/4”…
Categories: Green Homes

Heat Pumps and Dual Fuel Systems

Green Homes 2 - 20 hours 43 min ago
A Retired Software Engineer and Home Energy Enthusiast Designs a Dual-Fuel Heating System for a Pretty Good House
Categories: Green Homes

How to insulate triangle of shed dormer?

Green Homes 2 - Sun, 2025-11-09 21:10
Drywall has started going up in our new CT build, and I realized today I might have forgotten an insulation detail. You can see from the photos below what we've…
Categories: Green Homes

Foam house building technique

Green Homes 2 - Sun, 2025-11-09 06:23
Is anyone familiar with Sabs construction? It utilizes eps foam boards and a formulated concrete mixture to replace wood as the structural part of the home. It is essentially a…
Categories: Green Homes

Heat pumps are not delivering expected cost savings

Green Homes 2 - Sun, 2025-11-09 04:38
Two years ago we took advantage of our state's efficiency rebate program to install two heat pumps in our 2,200-square foot 1978 split level in southern Maine (6A) - one…
Categories: Green Homes

Ordered wrong 1 in foil faced eps foam

Green Homes 2 - Sat, 2025-11-08 15:04
Hey so I ordered sheets of foil faced 1in eps foam for a roof project. Contractor said it was wrong sheets and used something else. Now I have 16 4x8…
Categories: Green Homes

Best spray foam for old home in Climate zone 3A

Green Homes 2 - Sat, 2025-11-08 13:14
We will be finishing the attic in our 1930 house in Atlanta, GA next year. Currently it is a nonvented and partially conditioned space with insufficient foam batt insulation. The…
Categories: Green Homes

Diagnosing damp/wet attic walls

Green Homes 2 - Sat, 2025-11-08 10:34
Hi all-  trying to diagnose how the inside end walls of my attic are wet/damp.  I am perplexed.  maybe Im overcomplicating.  We have three "endwalls" on the house, all have…
Categories: Green Homes

Insulating metal holddowns and bearing plates in wall assembly- Condensation Concerns?

Green Homes 2 - Sat, 2025-11-08 02:00
Hi Folks, I’m curious if people provide any special attention to insulation around metal components in the wall assembly, particularly holddowns (i.e. simpson HDU4) and bearing plates, considering these are…
Categories: Green Homes

Spacing of Rain Screen Battens

Green Homes 2 - Fri, 2025-11-07 20:22
Hi everyone!I'm an architecture student, working on the details of my design for a Climate 6 zone ADU unit.  More specifically, we're detailing the connection of a window to our…
Categories: Green Homes

Gable vents with room in attic

Green Homes 2 - Fri, 2025-11-07 13:18
House built in 1960s with open gable roof, converted garage on left side also gable roof, and an intersecting gable in the middle.  House has gable vents: one on each…
Categories: Green Homes

Torn between DIY and hiring a builder

Green Homes 2 - Fri, 2025-11-07 10:53
Hi everyone! TL;DR at the bottom. Sorry, I'm wordy. First, I just want to say that I'm not looking for reinforcement either way. Rather, I'm looking for people's experience who…
Categories: Green Homes

Smart Baffles and Cathedral Ceiling Insulation

Green Homes 2 - Fri, 2025-11-07 06:51
We have energy heel trusses in our cathedral ceiling area. The total space from the roof sheathing to where the finished drywall would be is 26”, so a 26” deep…
Categories: Green Homes

Green Building During Our Current Political Catastrophe

Green Homes 2 - Fri, 2025-11-07 02:00
It’s tough to know which actions matter
Categories: Green Homes

DWG Drawings open with unusable line weights and colors. Is there a work around?

Green Homes 2 - Thu, 2025-11-06 13:31
Thank you When I open up one of The library details and download it as a DWG and then try and open it with my CAD program Autocad The building…
Categories: Green Homes

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