Green Homes News

I am a student creating an ADU located in Maine, Portland. We have a complex system which we divided into two: the sloped windows and the gliding door system. Kawneer…

My installers put in some adhero 1000 on top of new plywood. Weather is a little cool. It was 50 to 55 yesterday when they installed it, 30s and 40s…

Do I need an air gap between sheathing and foil faced board in unvented conditioned attic.

I’m working on a basement project where half of the floor is concrete and has no insulation under the slab. The other half is an addition that currently has a…

I have an ICF foundation in the ground. I put a full interior and exterior 4” perforated perimeter footing drain (rigid pipe SDR35 not flexible) that run to daylight. Pipes…

Crafting a perfect wall for extreme Plains winters in Mitchell, South Dakota

I am renovating a early 1900s 1 1/2 story cape in Western Montana (climate zone 6 B). The house has a long shed dormer on each side that were framed…

I’ve seen mixed information about MR (moisture resistant) drywall such as Certainteed’s MR Tech. A few questions. 1. Thoughts on installing it in a ceiling in a 2 story Cape Cod kitchen…

Hello, I'm in the process of re-insulating and cleaning up an addition crawls space.   I attached a diagram of the layout and will add photos later.   The climate zone is…

Our walls are 2x8 thick and all have been insulated with R30 Rockwool batts. We had originally planned to stuff rockwool into the door gaps, but most spacing is around…

Our basement will be a finished and conditioned crawl space. The whole house air system is connected throughout this space. Our home uses blown-in cellulose in the attic and rockwool…

The desire for exterior insulation is complicated by overhangs and bay windows

Hi Everyone,I’m starting design and builder interviews for a custom home in Oakland County, MI (Climate Zone 5A) — a 1-acre clearing on a heavily wooded 15-acre parcel. The goal…

An excerpt from a Fine Homebuilding article states:Two-story homes usually have another ring of rim joists above the first-floor ceiling. If you need to insulate these rim joists, it’s best…

I'm building an addition on my house, on top of a concrete slab. The general plan is to use 3.5" xps, 3/4" osb, then hardwood flooring. I'm building a frame…

We are building a conditioned unvented attic with Roxul insulation at the roof deck. We have a portion of attic which is over an outside porch - should there be…

Hello everyone!I would like to open some discussion about a cabin roof assembly that is currently being built in my area. I know it has "holes" (literally) in it and…

Hello!  We have received a quote for 21" of blown-in cellulose for our attic (Central VT).  This is from a meticulous company who will make sure every nook and cranny…

Hello all, we are building a home in zone six, slab on grade. Builder wants to use a superior walls, precast, for the frost wall.  Not knowing how we would…

I have some doubts about the effectiveness of vapor variable membranes such as intello and similar products. My concern is in winter with a warm humid interior such as a…