Green Homes News

Just had some original 1967 vintage r15 mineral wool batts pulled from my attic and will attempt to do my own air sealing. I have a shallow pitched roof so…

All,Our plans call for 10 mil under the XPS of our slab-on-grade house in Idaho with vertical XPS at the stem walls and under the slab (see atch'd image).The contractor…

Hey All,We are working on our slab-on-grade, single level, 2100 sf house in Idaho.  Just in case we find radon seeping in, I want to have some mitigation measures in…

I am an energy auditor in the upper Midwest, and I am trying to figure out how to accurately account for the benefits of duct sealing in what is very…

Hi everyone,  I'm planning to use a dimpled membrane (R value 4) under steel stud track on a concrete slab in my basement. The goal is to prevent thermal bridging. I'd…

Hello all, I live in zone 5a in a 100+ year old house. I’d like to insulate my rim joists (rigid foam with a spray foam perimeter) and I’m curious…

new residential construction in 5b. bottom to top unvented assembly: plywood, sa membrane (adhero), 6" polyiso, then metal roof. then likely solar on top of metal.is it advised to install…

Hello! I wanted to start by thanking everyone for their contributions; I've learned a lot from you all.I'm trying to figure out the best way to upgrade our insulation and…

Short and sweet- I'm trying to enclose my attic HVAC into my thermal boundary & air seal all in one project. And I am stumped on how much foam thickness…

tl:dr -- switching from fuel oil or propane or electric heat most likely (unless you start spending a lot more on a/c than you did before)... natural gas, maybe not.https://www.canarymedia.com/articles/heat-pumps/will-a-heat-pump-save-you-money-it-depends?utm_campaign=electrified-life&utm_source=twitter&utm_medium=social&utm_content=1712322956

Hello!  I am new to this site and have a question about basement ventilation and air quality.  I am in the process of planning the buildout of a finished basement. …

Reading about some of the peel and stick WRBs, many cannot be exposed for lengthy periods.  As I plan for the start of a build this summer, making siding decisions…

Location: 100F Pierce Hall, 29 Oxford St., Cambridge

"Air Tracker: Introducing scalability and accessibility to neighborhood-level air pollution source identification" with Tammy Thompson, Environmental Defense Fund.... Read more about Atmospheric & Environmental Chemistry Seminar

This seems like a simple question but I'm struggling to find a clear answer. I'm redoing the plumbing vent pipes in the attic of a ranch home that will get…

I have 4 American Standard Vormax one-piece toilets installed in new construction 5 years ago. Given their premium price, they don't move solid waste quite as effectively as a basic…

Climate zone 7A.I have a building, that because of spatial separation issues, has several windows that require a 45min fire resistance rating. This means they are a specialized product, and…

This new book assembles a huge amount of valuable technical information on cob walls

Hi all, I'm a little confused about the concept of running bathroom vents on timers to satisfy the required CFM for whole house ventilation. Even with evenly distributed bathrooms, does…

Hi all, Wanted to get your opinion on this detail. How would you improve it? For example, what are your top three favorite waterproofing methods? What brands do you love? Add insulation at…

Location: Askwith Theater, Longfellow Hall, 13 Appian Way, Cambridge

Join us for the Boston Premiere of Hollow Tree, hosted by History Design Studio and co-sponsored by the Harvard Graduate School of Education.... Read more about Swamp Capitalism Event Series: Screening of “Hollow Tree”