Green Homes News

Should I do anything about this 2×12

Green Homes 2 - Sun, 2022-10-16 04:34
This is a 2X12 that’s on my roof, the hole is only 2 inches in one direction but 3.75 inches in the other direction and the hole is slightly off…
Categories: Green Homes

Extrapolating yearly energy usage from Manual J calculations

Green Homes 2 - Sat, 2022-10-15 19:55
I have an HVAC design that was created by a firm specializing in that work; the design includes Manual J and S (plus D and T) reports plus the data…
Categories: Green Homes

Bathroom Shower Exterior Wall – Vapor Barrier or Not?

Green Homes 2 - Sat, 2022-10-15 18:28
I'm in climate zone 5 with 2" exterior polyiso at R13.5 and R21 Rockwool in the wall cavities. One of my shower walls is on a exterior wall. I'm planning…
Categories: Green Homes

Replacement for broken LED canless recessed lights

Green Homes 2 - Sat, 2022-10-15 13:55
Hi all, I'm back at it in my attic. I have some 6" LED "canless recessed" lights that are designed to spring fit into a hole in the ceiling drywall…
Categories: Green Homes

Crabapple and Maple Festival

Green Homes - Sat, 2022-10-15 10:00
Location: 125 Arborway, Boston

Join the festivities at the Arnold Arboretum to learn about the Crabapple and Maple Collections from staff and volunteers, participate in children's activities, and view plants up close with the microscope station.... Read more about Crabapple and Maple Festival

Categories: Green Homes

flat roof and thermal bridging abatement purlins and foam

Green Homes 2 - Sat, 2022-10-15 08:34
In a previous post about a flattish roof on th 7a 6a HVAC zone board (super cold and moist), I discussed ideas on how to handle a 10-inch total depth…
Categories: Green Homes

Ridge transition detail from EPDM to asphalt shingles?

Green Homes 2 - Sat, 2022-10-15 07:01
Hi experts,  I've got a roofing question for y'all.  The front half of my house is an 8/12 pitch roof, that will be covered in regular asphalt shingles.  Most of…
Categories: Green Homes

bath vent duct in attic (cold climate): bury under loose-fill? or spray foam around?

Green Homes 2 - Sat, 2022-10-15 07:00
Hello GBA readers,Am in Vermont (CL zone 6A). On a two story house, I need to vent a upstairs bath+ laundry room.  I learned from GBA that this vent outlet…
Categories: Green Homes

using energy savings to pay for reduction of a home’s carbon emissions

Green Homes 2 - Sat, 2022-10-15 06:35
Hi Folks,After taking much advice from GBA, the website and its community of experts, I managed to reduce carbon emissions by 56% in my 1934 Boston-area cape.My town of Arlington,…
Categories: Green Homes

Am I completely screwed? I have two vapor barriers in my walls

Green Homes 2 - Fri, 2022-10-14 17:24
I hired and architect who specializes in green building to design my energy efficient house. We moved in about two months ago. And now I'm afraid the design is completely…
Categories: Green Homes

William Belden Noble Lecture Series: John Green

Green Homes - Fri, 2022-10-14 17:00
Location: The Memorial Church Sanctuary, One Harvard Yard, Cambridge

New York Times bestselling Author John Green will present "How the World Ends" as part of the 2022-23 William Belden Noble Lecture series.... Read more about William Belden Noble Lecture Series: John Green

Categories: Green Homes

Bathroom Heating Options Working with Heatpumps

Green Homes 2 - Fri, 2022-10-14 13:35
What is the most efficient way to heat my bathrooms?I'm currently renovating a 5100 sqft house from 1960 in Narrowsburg, New York. Currently, there are hydronic baseboard radiators fueled by…
Categories: Green Homes

Daikin heat pump form factor – is it a rebranded Goodman unit?

Green Homes 2 - Fri, 2022-10-14 11:57
Hello,Helping my neighbor, who is now leaning toward a heat pump with central ducted air handler.  She got a proposal with Mitsubishi equipment (SVZ/SUZ).Now she has a second proposal with…
Categories: Green Homes

slab shield vs. rigid zone 6

Green Homes 2 - Fri, 2022-10-14 10:07
Hello,  I am planning to do a frost protected shallow slab on grade foundation for my home.  I have a plumber friend who swears that slab shield is the way…
Categories: Green Homes

Atmospheric & Environmental Chemistry Seminar

Green Homes - Fri, 2022-10-14 10:00
Location: Zoom & 100F, Pierce Hall, 29 Oxford St., Cambridge

Kristie Boering, Professor, UC Berkeley, will give a talk (title TBA).... Read more about Atmospheric & Environmental Chemistry Seminar

Categories: Green Homes

Best duct type for ERV?

Green Homes 2 - Fri, 2022-10-14 09:48
Based on advice received on a previous question, ( I've decided to go with the Panasonic Intelli Balance 100 ERV (cold climate version) for ventilating a 600 SF second floor…
Categories: Green Homes

HVAC Planning during a retrofit

Green Homes 2 - Fri, 2022-10-14 08:43
I'm in a situation where I have to replace my roof, siding, windows and add some interior insulation. My interior insulation retrofit will take a few years as I plan…
Categories: Green Homes

Fix for Unvented Cathedral ceiling issue

Green Homes 2 - Fri, 2022-10-14 08:14
Hello. I previously wrote about my cathedral ceiling which was insulated incorrectly. We are in 4a and have an unvented cathedral ceiling with no vents and also no spray foam…
Categories: Green Homes

Blueskin vp100 applied directly to EPS

Green Homes 2 - Fri, 2022-10-14 07:58
I am building in 3Z ca coast. I only need 3/4”” Eps to stop condensation so I am using 3/4” to stay within Hardi Siding warranty requirements of 1” or…
Categories: Green Homes

In Some States, PV is Getting Cheaper Than the Grid

Green Homes 2 - Fri, 2022-10-14 02:00
A rooftop solar company hopes to build a microgrid that will provide residential electricity at a lower cost than the grid
Categories: Green Homes


RMC facebook RMC twitter
Scroll to Top