Green Homes News

A friend on the Oregon coast has a low slope roof with a 7 year old vinyl roof. The roof is 2x6 T/G car decking on beams, with either R…

The shed has some spray foam insulation underneath,  but I don't know the R value. Can't really see much of the spray foam, so not sure what kind of condition…

A similar question to this has been asked before here https://www.greenbuildingadvisor.com/question/modified-perfect-wall-what-happens.  I realize this is not the perfect wall and either is the one described below.The building climate zone is 6…

If Congress normalizes ADU loans, what changes?

I just found green building advisor and have already planned my project and am hearing different stories from contractors. I just thought I'd check the information from contractors.Overview : 1970s…

A couple years ago, I considered but decided against full gutter guards. My gutters are cleaned twice a year, but I still get a lot of seed pods down the…

If the ductwork is sound, is it an easy switch?

I’m going to be having my roof replaced soon and have a question concerning adding foam board such as EPS on top of the roof deck and under the TPO…

Adding a new 21" H fieldstone wall at the bottom of our front yard incline that's about 3ft high. New concrete footing is 30" deep. Wall is about 30 ft…

I am planning  to “fix up” the situation over my 70's kit homes exterior walls.I'm in Colorado climate zone 6 around 7,000'ft. The roof is a 4/12 pitch.I  want my…

We’re in the process of air sealing the inside of a new construction home. For wider cracks, we’ll be using canned closed-cell spray foam (Great Stuff Gaps and Cracks or…

We’re using a Coravent rain screen system, and our builder needs to fur out the windows about ¼ inch to meet the siding. He suggested using rigid foam for the…

What we learned from updating a 16-year-old deep-energy retrofit

Hello,we are trying to figure out a proper way of  creating rain screen around flangeless upvc windows that are set flush with OSB. Windows are already in, and the OSB…

Largely thanks to this site I have gotten the courage or foolishness to proceed with thin stone veneer wainscot (100 sq ft) when I do siding. Mid Missouri, hot humid…

Is there a rough cutoff (blower door score) for when a house is too tight to get combustion air from inside the house for a gas water heater? I've read…

Misunderstandings about vapor barriers and vapor retarders are still common

Large shop ... 4500 sq ft ... 16 ft walls ... one man build ...First ... I have three rolls of Tyvek here ...10 x 100  .. about 5 years…

For our "Money Pit Cottage" project to rebuild a 1946 one-story cottage, we're adding a Broan 150 cfm HRV.We had no reasonable alternative to installing the unit in the attic.…

I am building a she shed that is a little bit over engineered.  I am nearing the end of the exterior but can't figure out how to add the lighting.…