Green Homes News

We are in the detail design phase of a 3 bedroom lake cottage outside of Rangeley, ME climate zone 6.  Plans attached.  It will be a vacation home for us…

This question is for Zone 5a at 8,500ft in Colorado.  I can get recycled Polyiso and EPS for much less than any other insulation and want to use it, but…

I have a few different questions as I sort out windows in a home I plan to start building in May. Background:Climate Zone 6A (New Hampshire)House footprint is 46’ x 32’Long…

Spray foam has come a long way...major manufacturers are now offering Greengaurd Gold certified ultra low VOC products and using blowing agents with a much lower GWP than before. But…

Hi there. I recently purchased the shell of a timber-framed cabin on the Olympic Peninsula in Washington State. I am trying to sort out the crawlspace. From what I've read…

My house is 1.5 story cape style, Kanawha County, WV (Zone 4 near 5. House just scored 10.89 ACH50 (yay me!) I am currently air damming the knee attics (maintaining…

Location: Weld Hill Lecture Hall, 1300 Centre Street, Boston

"Demographic attritions, elevational refugia and the resilience of insect populations to projected global warming" with Carlos-Garcia Robledo, Associate Professor, University of Connecticut.

... Read more about Arnold Arboretum Research Talks

Location: Zoom & David T. Ellwood Democracy Lab, Room 414AB, Rubenstein Building, 79 JFK St, Cambridge

“The Future of Resource Adequacy in a Decarbonized Grid"... Read more about Energy Policy Seminar

After consulting with several roofers/mold remediation/insulation contractors, I'm at a loss on what to do with my attic. I live in Zone 5A. When I bought the house five years…

Considerations when choosing between microinverters and string inverters with optimizers for a residential solar power system

Hi all, trying to understand the importance of a fully detailed drywall air barrier on a cathedral ceiling that has exterior rigid foam insulation. I've read lots of GBA articles and…

A comment by Walta got me thinking about our attic space and its leaky kneewall glory.I would like to explore this a little, in context of conditioning the attic and…

Hey hope everyone is doing well. About 6 years ago I replaced my roof on a 2 car detached garage. One side of the garage now has a leak that…

Hello,I've gone back and forth through several forums and I still can't decide 100% on a solution, so I thought I'd pose a question for my particular scenario. I appreciate…

I am building a new house and want to know the best way to keep the basement well conditioned. --Northern Michigan zone 6a--1200 sq ft foot print (30x40), 2 story with…

2-story SOG house in climate zone 4 (BC Canada).The downstairs is finished (R-13 fibreglass batt insulation in walls and drywall) and laminate flooring. Foundation is exposed ~10” above grade. I…

I am building a house this spring in Ottawa, ON Canada climate zone 6. I am trying to finalize my above grade wall assembly but am a little confused with…

We've progressed through our renovation and am at the stage of deciding on a siding to go over our prosoco wrb.  A few issues have led us to believe that…

Hi, I'm planning to replace my roof shingles (and 57 year old 3/8th decking) this spring. We are also planning for a future solar PV installation.  Our roofline and orientation are not…

I am just about to make my vented attic, unvented, i.e. raise the thermal barrier to the roof.  I plan to use 2” of closed cell spray foam next to…