Green Homes News

I have 40 feet of square metal ducting in an attic. It is subject to extremes of temp and humidity.  I am located in climate zone 5A, southern NH.  Currently…

Hi all,I'm looking for advice on adding soffit ventilation. My attic was originally built as an unvented space with spray foam insulation, but we're now transitioning to a traditional vented…

What is the best way to seal within this type of exterior conduit? It is carrying wiring for the air conditioner. I was thinking of using duct seal compound, but…

I'm working on a roofing project where I'll be putting in a new deck with 19/32 plywood. This particular plywood pictured is Plytanium brand that I purchased from Lowes. I…

I'm insulating (rockwool) the wall between our mid-century home and the attached garage.  Garage was built with the home in 1964.  I intend to add strapping to the 2 x…

Hi all. I am hoping for guidance on the best way to insulate a converted covered deck. My understanding is that this deck was built with the intention of it…

Hello GBA Community, My name is Mike.I want to start by saying that I really appreciate all the contributors on this platform.  I have learned a great deal from all of…

We are getting ready to build and because we are doing some of the end work ourselves (insulation, molding, cabinets), our contractor is requiring a Hold Harmless agreement be signed.…

A friend of mine is doing a new build in Oklahoma, climate zone 3A.  Their builder is planning on doing zip sheathing, with brick cladding and then stucco directly over…

The development of International Energy Conservation Code (IECC) and how the 2021 edition changed that process

Again thank you to all who contribute to this site. Thank you! I'm really close to ripping off the siding. My question for you is .. Will 3-3.5" (recycled) XPS "roofmate " be…

Location: HUCE Seminar Room 440, MCZ 4th Floor, 26 Oxford Street, Cambridge

Join us for a book talk with former Harvard Environmental Fellow Matthew P. Johnson and discussants Gabriela Soto Laveaga, Professor of the History of Science and Antonio Madero Professor for the Study of Mexico; Victor Seow, John L. Loeb Associate Professor of the Social Sciences; and Dustin Tingley, Thomas D. Cabot Professor of Public Policy.

During the later twentieth century, Brazil's right-wing military dictatorship built a vast network of hydropower dams that became one of the world's biggest low-carbon electricity grids. Weighed against these carbon savings, what were the...

Read more about Book Talk: Hydropower in Authoritarian Brazil: An Environmental History of Low-Carbon Energy, 1960s-1990s

This is an odd question. I'm sure there is an obvious flaw as I've never seen this executed. For those of us in zones with significant heating and cooling seasons (Northern…

Hello AllTwo story floor plan in the making with an additional basement. Zone 5A. First floor ~ 2500 sq feet living space with two storey great room. Second floor would…

Hi everyone,I’m renovating my parents’ basement due to termite damage, and I’m hoping to get feedback on the best replacement strategy for the damaged foam board insulation—especially given that I…

Hi all…I’m getting close to starting my build here on the south Oregon Coast and I’m down to figuring out which membranes to use.  The roof:  I have an unvented…

Basically just looking for a proof of concept here if anyone has the time for a fun bit of comedy. So my partner bought himself an 80's spec home up in…

We are doing a deep energy retrofit in Northern New Jersey. This includes air sealing as well as exterior insulation (3” on walls/4” on roof). Is an Air to Water…

I am building a home in North Dakota with footings just poured.  My footings are generally very deep, but along the walkout side of the house they are at the…

Our sill plate is taped on the exterior to the foundation with Siga Fentrim. We want to have a belt and suspenders approach with it, so we also caulked on…