Green Homes News

1” of exterior rigid insulation or skip it?

Green Homes 2 - Wed, 2022-08-17 11:13
I’m just about done framing my home and am trying to come to a decision on if I should use 1” of exterior rigid foam. Windows are going to be…
Categories: Green Homes

How to flash a window in T1-11 siding?

Green Homes 2 - Wed, 2022-08-17 10:21
what is the best way to install and flash a window into T1-11 siding?
Categories: Green Homes

Solid Fuel–Burning Appliances and the Risk of Pyrolysis

Green Homes 2 - Wed, 2022-08-17 02:00
A lesser-known safety threat associated with woodstoves and fireplaces
Categories: Green Homes

Insulate conditioned crawl space floor?

Green Homes 2 - Tue, 2022-08-16 21:53
Planning a pretty good house build. R30 walls, R60 lid, European windows and doors, etc. Seems pretty common to insulate your slab in homes with basements, but not common whatsoever…
Categories: Green Homes

Cost Effectiveness of Different Wall Assemblies

Green Homes 2 - Tue, 2022-08-16 21:03
Hello.  I'm building a workshop (36'x32') in Climate Zone 4A (southern middle TN).  It'll have a slab foundation and a vented, scissor-trussed attic.  It will also have heat and AC.I've…
Categories: Green Homes

Insulating a Flat roof with 2 feet of air space

Green Homes 2 - Tue, 2022-08-16 20:45
I live on the North Costal of BC (Zone 5) and recently reconstructed an old war time house and removed an old pitched roof and installed a new flat roof.…
Categories: Green Homes

An HVAC puzzle: find physical room for equipment

Green Homes 2 - Tue, 2022-08-16 20:39
The task is to provide the full HVAC suite to a 1949 bungalo in climate zone 2. You've already done a good job air-sealing the walls and ceiling. You can't…
Categories: Green Homes

Air tight ceiling or not, unvented roof assembly /w open cell spray foam

Green Homes 2 - Tue, 2022-08-16 14:45
We're looking at constructing an unvented 2:12 pitch skillion roof with a cathedral ceiling in zone 3A using this detail we would be using open cell foam insulation.I've read…
Categories: Green Homes

Critique my plan, plus a few questions – Retrofit Cape Cod Insulation

Green Homes 2 - Tue, 2022-08-16 13:26
Hi all,So after pouring through the wealth of information on this site I've made some large changes to plan to redo my second floor. If you could point out any…
Categories: Green Homes

Wall Assembly Zone 6 – Portland, ME

Green Homes 2 - Tue, 2022-08-16 10:09
Hey everyone, would welcome some feedback on this proposed wall assembly in Portand, ME!Because our continuous exterior insulation falls below the recommended R11.25 to avoid wet walls (for budgetary reasons),…
Categories: Green Homes

How to protect a monolithic slab from frost without the 4′ insulation in front of it

Green Homes 2 - Tue, 2022-08-16 10:04
Hi GBA,I am proposing a one storey extension to an existing building. I am opting for a monolithic slab to limit the amount of excavation.  the propose extension has to…
Categories: Green Homes

Roof Assembly & Insulation Suggestions – Zone 4C marine.

Green Homes 2 - Tue, 2022-08-16 09:50
Hi All,I'm working on plans for an owner built home. I'm trying to keep things simple, I would like to make things as energy efficient as possible and I'd also…
Categories: Green Homes

Spray foaming attic floor instead of roof sheathing

Green Homes 2 - Tue, 2022-08-16 09:30
Climate Zone 6A - A friend with a tight budget is getting new roof sheathing and shingles due to hail damage. The home is 60+ years old, drafty, with minimal…
Categories: Green Homes

Sizing a heatpump

Green Homes 2 - Tue, 2022-08-16 07:50
Hello,I'm hoping to get a second opinion on the correct size for my heatpump. I'm in a 2,400 sq ft colonial in zone 5. I have an oil boiler as…
Categories: Green Homes

Sourcing high performance registers

Green Homes 2 - Tue, 2022-08-16 07:37
For a Vermont home (zone 6A), I using Fujitsu slim-duct systems to distribute air to multiple rooms. To balance the distribution system, instead of using dampers on branches, I am…
Categories: Green Homes

Un-venting an attic

Green Homes 2 - Tue, 2022-08-16 05:51
Zone 5 Coastal CT-150 year old home-major renovation planniingOur second floor attic has a nice plywood floor that has had holes drilled and had some type of insulation blown in…
Categories: Green Homes

Retreat in the Age of Fire

Green Homes 2 - Tue, 2022-08-16 02:00
We can't design our way out of all wildfire risk. Retreat may sometimes be the best option.
Categories: Green Homes


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