Green Homes News

Insulating exterior walls with brick nogging.

Green Homes 2 - Thu, 2025-09-25 12:47
Good afternoon, I have a project that upon closer inspection has revealed brick nogging the entire height of the balloon framed structure; from first floor to second floor top plate. The…
Categories: Green Homes

Insulating and vapor barrier around chimney

Green Homes 2 - Thu, 2025-09-25 12:09
I am building a pretty good house with a cathedral ceiling and hot roof. I have a wood stove, and the chimney is framed in. It's a metal Class A…
Categories: Green Homes

Plastering or parging interior block basement walls

Green Homes 2 - Thu, 2025-09-25 09:50
Hi everyone. I’m in climate zone 6 in northeast Ohio. I have a cinder block wall foundation that I want to plaster or parge over to masks the block lines…
Categories: Green Homes

Kilowatt-Hours vs. MMBtu—Metrics for Measuring Energy Use

Green Homes 2 - Thu, 2025-09-25 02:00
How to choose and communicate two different energy units
Categories: Green Homes

Benefits and Eco-Friendly Design of Screened Porches

Green Homes 2 - Thu, 2025-09-25 01:32
What are the main advantages of having a screened porch?
Categories: Green Homes

Where to place erv supply in hvac system

Green Homes 2 - Wed, 2025-09-24 22:30
Perfect is the enemy of good so I decided to just order my erv and install the supply into my HVAC system. I have three options. (The erv will have an…
Categories: Green Homes

Ceiling Strapping Question: 20″ vs. 24″ OC

Green Homes 2 - Wed, 2025-09-24 15:49
Hi all,I’m looking for some advice on ceiling strapping:- Roof joists: TJIs 24” OC.- First strapping layer: 1x4 strapping perpendicular to TJIs, 20" OC.- Second strapping layer: 2x4 strapping parallel…
Categories: Green Homes

Vented vs. unvented roof assembly – marine climate 4C with existing minimal ventilation

Green Homes 2 - Wed, 2025-09-24 11:09
I'm planning to improve the insulation in my finished attic space in Northern coastal WA (Climate Zone 4C - Marine) and would appreciate advice on the best approach given my…
Categories: Green Homes

Max safe cavity insulation and roof details

Green Homes 2 - Wed, 2025-09-24 08:53
I have recently moved to South East Missouri 63956 from northern Canada and I have some questions about my insulation plan. I also have some roof questions. I've attached a…
Categories: Green Homes

Strategies for Combining Flanged Windows with Exterior Insulation, Window Integrated Jambs

Green Homes 2 - Wed, 2025-09-24 02:00
Part two of the Energy Smart Detail series on integrating windows with continuous exterior insulation
Categories: Green Homes

Research exhausted analyzing range makeup air options in Zone 5A

Green Homes 2 - Tue, 2025-09-23 21:27
I need some help with making a final decision on my makeup air.  It's a BEST 1200cfm external mounted blower, and the corresponding makeup air kit that opens up when…
Categories: Green Homes

Anyone regret or love having only heat pump(s) for zero F winters?

Green Homes 2 - Tue, 2025-09-23 17:48
Big question for us: do we go all-in on 100% heat pumps?  Or do we go with hybrid heat pumps?  The energy engineer is all-in on heat pumps and thinks…
Categories: Green Homes

Intello Needed w/ Dense Pack Cellulose?

Green Homes 2 - Tue, 2025-09-23 13:44
Dear GBA Community, We are in the midst of building a moderate-to-high-performance home in central Vermont.  Following extensive discussions with our architect, we had settled on the following wall assembly (from…
Categories: Green Homes

overhangs for thick foam roof

Green Homes 2 - Tue, 2025-09-23 12:47
Does GBA have an article illustrating various ways to detail roof overhangs for an unvented roof where 100% of the insulation is rigid foam on top of the roof sheathing?…
Categories: Green Homes

Designing heat pump system transitioning from natural gas furnace

Green Homes 2 - Tue, 2025-09-23 10:21
1550 square foot duplex home built in 1900 in Western Massachusetts3 floors: first floor is one unit, second and third floor is a second unitCurrently heated by a 90k btu…
Categories: Green Homes

Osb as vapour retarder

Green Homes 2 - Tue, 2025-09-23 06:21
My garage workshop will have interior osb sheathing. The building inspector says I don't have to have any vapour barrier because it's a garage. It seems that the argument against…
Categories: Green Homes

Rainscreen & corrugated metal siding

Green Homes 2 - Tue, 2025-09-23 02:07
We are having a coravent rain screen installed with vertically hinged corrugated metal siding over it. With this siding material, it will be impossible to make sure every nail securing…
Categories: Green Homes

PFAS (Forever Chemicals): The Building Industries Next Asbestos?

Green Homes 2 - Tue, 2025-09-23 02:00
What the building industry can do with forever chemicals
Categories: Green Homes

Choosing a Water Heater

Green Homes 2 - Mon, 2025-09-22 21:23
I am in the process of finalizing design and beginning build of a 1500 square ft slab on grade ranch in climate zone 5 and I am trying to decide…
Categories: Green Homes

Minimum crawl space height (Canada NBC, BC)

Green Homes 2 - Mon, 2025-09-22 20:54
My renovation - green I promise - has encountered some difficulties, and I need either a suspended slab or floor joists just below grade.  (The ground cannot support a slab,…
Categories: Green Homes

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