Green Homes News

Under-insulated Roof on Old Home

Green Homes 2 - Wed, 2024-08-21 14:56
Hello,I’ve got a 1914, 1-1/2 story house in zone 6. The roof is 2x4 rafters, currently insulated with dense pack fiberglass. (No ventilation from soffit.) Half the roof is over…
Categories: Green Homes

2:12 Roof – Rigid Foam On Sheathing Top

Green Homes 2 - Wed, 2024-08-21 13:06
Hey everyone! Our builder is having our black tin roof removed (low slope), adding rigid foam to the top side of the sheathing and then put the metal roof over…
Categories: Green Homes

Gable and Ridge Vent on 1.5/Cape Cod style house

Green Homes 2 - Wed, 2024-08-21 12:56
Hi there,I have a 1.5 story 1910 house in Climate Zone 4C (Seattle area) and have my second floor gutted, so I need to insulate. I have sloped ceilings, so…
Categories: Green Homes

When building on exposed bedrock, is it better to be right on it or on piers?

Green Homes 2 - Wed, 2024-08-21 07:46
We are considering a building site on our property where there is a ~20x30 foot area of exposed bedrock/ledge protruding a couple feet up from the ground in an otherwise…
Categories: Green Homes

Capping a Foundation for Winter (and staying in it)

Green Homes 2 - Wed, 2024-08-21 06:38
Long time reader, first time poster.  GBA & its contributors have been immensely helpful during the design and early construction stages of a Pretty Good Ski House in Madrid Township, Maine-…
Categories: Green Homes

Flat roof membrane: EPDM vs elastomeric

Green Homes 2 - Wed, 2024-08-21 05:29
Hello all,I have not found any information comparing EPDM to elastomeric membranes in the vast archives of GBA. I'm just wondering what people's opinions are on the two. I'm in…
Categories: Green Homes

Getting the Right Airflow for an Air Conditioner

Green Homes 2 - Wed, 2024-08-21 02:00
Learn why air velocity matters and how to ensure AC capacity will lower interior temperatures and remove humidity
Categories: Green Homes

Air seal spray?

Green Homes 2 - Tue, 2024-08-20 22:38
Hi all, Trying to air seal rafter/soffit blocking but it involved a repair which required sistering rafters. The soffit area is a mess of sistered lumber and I'm trying to get…
Categories: Green Homes

3.5″ Denim Insulation in 2×6?

Green Homes 2 - Tue, 2024-08-20 21:42
I'm in the process of building a house, and all of the interior walls are 2x6s, I'm looking at doing insulation in the interior walls, mainly for noise mitigation, but…
Categories: Green Homes

Air sealing a bathroom fan

Green Homes 2 - Tue, 2024-08-20 19:09
I've been working on sealing our attic floor / ceiling (vented attic, climate zone 4A - PNW). I was surprised to see all sorts of holes around the fan casing…
Categories: Green Homes

How weather proof does cladding need to be?

Green Homes 2 - Tue, 2024-08-20 18:59
Hi all. Building an ADU in Nova Scotia. From the plywood sheathing out we have: Mento WRB, Vent grid (1/2" rain screen material), 3/4" hemlock treated with Lifetime. The hemlock is ship…
Categories: Green Homes

concrete slab has a single damp location. plumbers are stumped.

Green Homes 2 - Tue, 2024-08-20 16:00
around last november  i removed  ceramic tile in my living room. it was installed pretty poorly, which resulted in air gaps between the tile and slab. made removal a breeze,…
Categories: Green Homes

Tapes for use with Henry VP100

Green Homes 2 - Tue, 2024-08-20 14:40
My Problems:I am replacing the windows in my home, which is located in climate zone 5, and found that the builder didn't use a WRB underneath the vinyl siding (The…
Categories: Green Homes

Unvented roof underlayment – metal shingle

Green Homes 2 - Tue, 2024-08-20 07:50
Hello all,I am nearing the end of a large scale reno of my forever home. Climate zone 6The home went from having a vented attic to a non vented attic…
Categories: Green Homes

Opinions on wall details on new build ?

Green Homes 2 - Tue, 2024-08-20 04:23
We’re building a new house for a client, and I wanted to get opinions on this exterior wall setup:  Starting on the interior: ??
Categories: Green Homes

Climate-Tech Startup Designs New AC System

Green Homes 2 - Tue, 2024-08-20 02:00
Massachusetts-based Transaera is rolling outs it first pilot projects in U.S.
Categories: Green Homes

Metal roofing and condensation

Green Homes 2 - Mon, 2024-08-19 09:44
We are building a home in Redmond, WA.   We are going to use NU-Ray 24 gauge metal roofing.  Our roof will get a lot of sun so we'll go…
Categories: Green Homes

Insulating and air sealing an old garage with no sheathing, using only foambard?

Green Homes 2 - Mon, 2024-08-19 08:58
I am trying to weatherize a detached garage into a year-round wood shop. It has just siding nailed to the studs, no sheathing. So, I have taken a cue from…
Categories: Green Homes

Dropped floor joist insulation in cold climate

Green Homes 2 - Mon, 2024-08-19 08:46
I'm building a single story house on a conditionned crawl space in cold climate (Quebec, upper zone 6). I would like to drop the floor joist to get the house floor…
Categories: Green Homes

Continuous external insulation around soffit nailers

Green Homes 2 - Mon, 2024-08-19 07:30
1906 Foursquare getting 2 layers of 1.5" GPS exterior insulation. This is going over the top of house wrap that I'm considering the inner air barrier. The roof is vented with…
Categories: Green Homes

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