Green Homes News

hello, in the last year I’ve been trying to make my home more energy efficient . Brick veneer and hardy board siding  exterior. Vented attic and flex ducts in attic…

Of all the construction-related topics that young builders need to master, one of the most confusing is flashing. -Martin Holladay

1908 Foursquare style 3-story house in ND.  DIY renovating the house to preserve it for another 100 years and serve as a short term rental and a place for multi-generation…

We recently had a room above our garage insulated with "retrofoam" or "injection foam" and based on the SDS provided, it was supposed to be a non-off gassing type of…

Hi All, We are currently renovating a 1960 1100 SF cape-style home in CT (zone 5A). We had asbestos in all of our drywall, so we took the whole house…

How to correctly flash a penetration without removing siding

Hello - I need some advice. I want to insulate this basement wall. Given the existing condition, I'm not sure what the next steps should be. Details:-Marine zone 4a (Seattle area)-I…

A friend just bought a house that has exposed rafters and some type of structural fibrous cementitious roof "sheathing". It appears to be 2 inches thick. The building inspector was…

We have a tape between our foam and sheathing that Siga said we need to fill somehow before using their tape. They first recommended caulk, backer rod and then taping…

I’m building a shop-on-top-of-garage in a 6B/5B climate zone (my county was changed in the last decade from 5B to 6B, but my particular location is probably closer to 6B…

I'm a developer of 76 unit microunit apartments in Florida (avg sq ft 300) and am exploring hvac options. I like the accessibility and maintenace of PTACs and VTACs but…

I'm renovating what used to be a detached single garage (12x24ft). The car door has been removed and I'll be sealing and insulating it so I can efficiently heat it…

Hi all,We have an attic space above our house and garage and have built an unvented and conditioned attic with the HVAC heat pumps/ducts in the attic space. We close…

We have Siga Fentrim 4” tape to seal the plane between the bottom of our sheathing and exterior insulation. My question is, there is a fairly large air gap between…

The codes and processes of blower door testing commercial buildings

Hello, very soon my new Andersen wood-clad e-series casement windows will be arriving to replace my existing damaged windows. I’ll be doing a full-fin replacement so interior and exterior trim…

Hi, long time reader and practitioner, but 1st post :-) I'm hoping for some of the talented wisdom I often see here...QUESTION:  1) do i break rule of no double vapor…

Hi all, looking to replace a tiled roof in CZ3b.Currently there is a tile roof, un nailed over a felt underlayment. Most contractors want to use some type of peel…

I’m in climate zone 5. I have large old double-glazed windows (R-2?) in rooms that are rarely used. Can I safely apply an insulating panel directly onto the interior surface…

I live in Maine in climate 6 and have an existing 15kbtu hyper heat minisplit downstairs and was thinking about adding another unit in an upstairs bedroom that's about 200sqft.…