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5 Answers

Pros - How Would YOU Build?

This question goes out to the pros on this site; those who are builders, building science aficionados, or some mixture of the two.

Many folks, myself included, come here with some vague ideas of how they think they would like to build and then post their ideas asking for advice. Instead of starting somewhere and then working backwards, I'd like to know where the pros would start. So here we go:

In Energy efficiency and durability | Asked By Lance Peters | Sep 18 17
9 Answers

Insulating basement foundation


I have read a lot on GBA and a few other trusted resources online and am still not clear. I have an unfinished basement below grade in zone 4 (Minnesota). House was built in 2013. Builder sprayed a black coating on the poured concrete foundation and then applied a 1.5"-2" thick rigid foam insulation to the exterior of the foundation before backfilling (completely below grade basement).

In General questions | Asked By BobTheWeekendWarrior | Sep 19 17
1 Answer

Silverboard Evaluation or Opinions?

I was watching the new Canadian show "Sarah Off the Grid" in which designer Sarah Richardson was building a new home in Creemore Ontario.. They were using an exterior insulation product called "Silverboard".

I was wondering how this product with the added "reflective lamination" may perform or compare to other rigid exterior insulations? Do you think it may trap moisture between the board and the sheathing?

In Green products and materials | Asked By Scott Wilson | Sep 20 17
10 Answers

Dense pack cellulose roller: Where to get one?

As a fan of the dense packing method of cellulose in Atlantic Canada, I often run into a few key challenges from contractors:

1 - It's dusty (...not really when dense-packed)

2 - It's different and learning is required.

3 - Not wanting to use strapping (due to added cost) to manage the bulge at 3.5 lb densities.

The common response is to use a hard roller long enough to push the cellulose in. The problem is no one (myself included) knows where to get one? Can you please make some recommendations?

Thank you!


In Green building techniques | Asked By Mattbrennan4 | Sep 14 17
12 Answers

Location of solar panels on roof

Progress continues on the North Idaho ranch. I'm planning to install a 7 kW grid tie solar system that will have 2 rows of 11 or maybe 12 panels. My roof pitch is 7:12 and my orientation is 10 degrees east of true south with no obstructions. The roof overhangs 3 feet on the section that will have solar panels. I attached a crude depiction of the installation.

In Green building techniques | Asked By Steve Wolfe | Jul 17 17
6 Answers

FORCE/2 Rental Locations in NY 10956 area, I am having trouble finding a place to rent a FORCE/2 for dense packing of walls.

I put up my fabric a while ago without first checking my area for a force/2. I am getting to the point where I am thinking of buying one just to do my project, which is relatively small, I a guessing a day with the right machine. All the rental places near me that I have contacted have the force/1. I am willing to travel an I am often between Albany new have and Washington DC. Please share any know rental locations.


In Green products and materials | Asked By Gregg Mastropolo | Aug 8 17
4 Answers

Structural support for windows/door with exterior insulation

I am doing a large renovation that will involve adding 3" of rigid foam insulation and I'm installing triple pane Inline Fiberglass windows that are quite heavy and I'm concerned that the methods that I've seen will not have enough structural support for the windows and sliding glass doors. What I have seen is having 3/4 plywood bucks that span the entire opening (from face of exerior insulation +/- furring strips to the face of the interior framing).

In Green building techniques | Asked By Joshua Rogers | Feb 10 11
1 Answer

I-joist blocking

Laying out shop lighting..just some 4' led strip lights. Can I use the attached method to wire my fixtures right where they need to be? I see install guidelines for I joists that say "no nailing the flange" how would these small blocking pieces be secured to the i-joist....wanting to use dense pack after all plumbing and electrical is done so I'm not wanting to create a full blocking from bottom of 2nd floor subfloor to top of 1st floor ceiling.

In General questions | Asked By Inger Peters | Sep 20 17
7 Answers

Best way to plumb for outdoor shower (with hot water)?

Hi guys,

I am wanting to have an exterior hose bib that allows for hot water, so I can hook a shower up to it.

Because I am in a tiny house on wheels, my walls are only 2x4. The only product I have found is woodford hot/cold bib

Unfortunately, even for the 2x4 model, it's 5 7/8" long. So this product would stick out on the interior side.

It's also important to note that my one piece corner shower will be on the same wall, so there is no room to come out on the interior side.

In General questions | Asked By Grey Wolf | Sep 12 17
9 Answers

Insulating a low-slope roof

Hi Martin,
We are ready here to go ahead with the insulation of our low-slope roof, and decide to go with closed-cell sprayed foam as you recommended.

We had 3 quotes from local company, and 2 of them proposed to shoot 5-6 inches of foam underneath the 1st deck (in green in the following image), assuming we would remove the interior ceiling.

In Green building techniques | Asked By Francois Desrochers | Sep 6 17
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