Green Homes News

ERV in Cold Wet Climate

Green Homes 2 - Wed, 2023-11-29 15:15
Hi everyone. The climate here in Southeast Alaska is notoriously wet. Our outdoor relative humidity is ~80% year round, and our 1% Cooling and 99% Heating temperatures are 69F and…
Categories: Green Homes

Help Insulating a Bathroom Ceiling with Flat Roof

Green Homes 2 - Wed, 2023-11-29 12:11
Hello - Hoping to get some advice on how to insulate a Flat Roof on a portion of our home.  Stumbled on this site as I was trying to figure…
Categories: Green Homes

Band Joist and Sill Plate Insulation Moisture Question

Green Homes 2 - Wed, 2023-11-29 09:44
Long time reader, first time poster here.  Thank you to all who contribute.So my question has to do with closed cell spray foaming the band joist in my 1976, climate…
Categories: Green Homes

Trim before soffit out of order…recommend a gap amount?

Green Homes 2 - Wed, 2023-11-29 09:26
Hi,I was going to do my own soffit and fascia, even bought it and brought it home, but running out of time and thought someone who does it for a…
Categories: Green Homes

Insulation Strategy and Moisture Risk in Missouri Remodel

Green Homes 2 - Wed, 2023-11-29 08:55
Hello GBA community,Every time you come up on the FHB podcast (quite frequently), I think to myself, "man, I really need to get around to asking that question." Thanks for…
Categories: Green Homes

Glass-faced polyiso for ventilation baffles

Green Homes 2 - Wed, 2023-11-29 08:13
Any issues using glass-faced polyiso for ventilation baffles instead of foil-faced?Local roofing companies have the glass-faced for 25% cheaper.
Categories: Green Homes

Controlling condensation on ERV supply (outside air) duct

Green Homes 2 - Wed, 2023-11-29 05:55
My HVAC installer appears to have done a decent job insulating the supply (outside air) duct on my ERV (sealed metal ductwork with duct wrap having metalized foil with interior…
Categories: Green Homes

Exterior closed cell spray foam on the cottage siding

Green Homes 2 - Wed, 2023-11-29 05:44
I am considering adding closed cell spray foam to the exterior of my cottage.  The walls are 2x4 studs every 24" and then horizontal siding (the exterior side of the…
Categories: Green Homes

Monopoly Roof Framing

Green Homes 2 - Wed, 2023-11-29 02:00
An alternative approach to overhangs with several benefits for both building and occupants
Categories: Green Homes

Heat Recovery with HPWH

Green Homes 2 - Tue, 2023-11-28 20:19
For two years I've been planning the house I broke ground on this week and in it, I've been planning on going radiant heat with an air to water heat…
Categories: Green Homes

Long down time on ducted heat pump

Green Homes 2 - Tue, 2023-11-28 18:25
Hi everyone. Question about run times on my heat pump. I’ve seen lots of questions on either always running and not getting warm enough or short cycling due to oversizing.…
Categories: Green Homes

2×6 Exterior Wall with Rigid Retrofit

Green Homes 2 - Tue, 2023-11-28 17:10
Hello, has anyone come across a detail in the GBA library that shows a retrofit for an increased r value on an exterior wall? Similar to a Mooney wall. 1x3…
Categories: Green Homes

JLC Business Tune Up Guide by David Gerstel

Green Homes 2 - Tue, 2023-11-28 17:02
This is an interesting article by David Gerstel, who wrote the book "Nail Your Numbers: A Path to Skilled Construction Estimating and Bidding." can join the site for free and…
Categories: Green Homes

chimney support needed?

Green Homes 2 - Tue, 2023-11-28 15:10
Replacing the roof, wondering whether the masonry chimney needs the support bar in the photo. The chimney is plumb and in good structural condition, 18"x36" or so and rises about…
Categories: Green Homes

GC put tar on 100% of foundation. I’m finding a lack of solutions for apperance fixes

Green Homes 2 - Tue, 2023-11-28 14:41
Hey all,My general contractor's crew applied a black roll on tar on 100% of the exterior crawl space foundation. I know it came from Home Depot as that's where they…
Categories: Green Homes

When is new footing needed when adding basement posts?

Green Homes 2 - Tue, 2023-11-28 10:55
We are adding a beam to our basement to correct some floor bounce in the kitchen which is over an open area in the basement. Essentially we are shortening the…
Categories: Green Homes

How critical is sealing seams (not joints) on dryer ducting?

Green Homes 2 - Tue, 2023-11-28 10:53
I'm in the Pacific Northwest (Climate Zone 4 Coastal). I just realized our dryer ducting (rigid) is sealed at the joints but not along the seams. Most of it is…
Categories: Green Homes

Best caulk for fiber cement siding, miratec and fiberglass?

Green Homes 2 - Tue, 2023-11-28 10:45
I am looking for recommendations from experts on what caulk will offer a good balance of durability, cost and ease of application for use on fiber cement siding, Miratech, and…
Categories: Green Homes

Can tape fill in missing poly vapor barrier?

Green Homes 2 - Tue, 2023-11-28 08:56
Hey all,I had an insulation company foam my ceiling and the company was cheaper than what I could buy the wall batt insulation for, so I had them do the…
Categories: Green Homes

Insulation advice for vegetated roof

Green Homes 2 - Tue, 2023-11-28 08:29
My project is on urban property in Toronto (zone 7), and I'm looking for advice about roof assembly and insulation regarding a vegetated/green roof.  The roof over this portion of…
Categories: Green Homes


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