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5 Answers

REMOTE wall without bituthane

I've been searching and have not found an answer yet. Does anyone have any experience with, or related articles, for substituting, say, Solitex Mento Plus for bituthane in a REMOTE wall? This assumes the plywood sheathing would be taped and goo'd for an air barrier. I'm just not sure about water vapor travel causing problems somewhere. Any opinions on the idea? Thanks. j

In Energy efficiency and durability | Asked By John | Dec 31 15
8 Answers

Will my crawlspace help temper passive solar gain?

My wife and I are having a 2100 sf house designed based off of rough sketches I put together. We are building in Squamish BC, Zone 4C. I have a relatively simple east/west shape and simple shed roof design. I'm shooting for R30+ wall, R50 roof and am now doing my best to dial my designer back on his suggested window layout. He really likes glass and currently has the overall Window to Floor Ratio (WFR) around 30%.

In Energy efficiency and durability | Asked By Sean Bickerton | Dec 29 15
7 Answers

Does earth coupling work?

I've purchased a city lot in Tucson, AZ and plan to build a tight, well insulated home on a concrete slab-on-grade within the next few years. It's a hot, dry climate with 1578 HDD, 3017 CDD, so obviously keeping the house cool is the big concern.

In Energy efficiency and durability | Asked By Michael McNulty | May 20 13
21 Answers

Slab on grade with stem wall above grade in a cold snowy climate

This is something I have seen done in garages, but I can't find much on doing it for a house. Where we live, we have a 4 foot frost depth, and a 50 lb snow load. Most houses around here have full basements because by the time you get 16" above grade, you already have 5+ feet of block or concrete.

In General questions | Asked By Nathan Scaglione | Dec 29 15
2 Answers

Air sealing & insulating an exterior chimney

This is somewhat of a two part question, first i have to address air sealing and framing temperatures directly above my gas insert. Second I need to address the optimum way to insulate with roxul, and where to place sheet metal air seals.

In General questions | Asked By Jon | Dec 31 15
5 Answers

Attic condensation and leakage in Zone 4C

I have a 1979 Tri-Level house north of seattle which had a water leak running down the masonry i found when installing a gas insert. I'm in process of replacing the cricket, however during the adventures of solving why its leaking, i've learned my roof has some significant condensation issues. Roofers tend to say just add a ridge vent and move on, but having read some of the building science articles here, i want to make sure i'm going the right direction... and if i can change things to be more efficient along the way, i'm all ears.

pertinent facts:

In General questions | Asked By Jon | Dec 30 15
10 Answers

ERV or HRV that scrubs the incoming air?

Hello all, I'm planning a new home and need some help on a ventilation issue. A couple of my neighbors burn a lot of wood in the winter, so much that you smell like a BBQ pit after a few minutes outdoors sometimes. Is there any ventilation system on the market that would scrub incoming air--activated carbon maybe? Or can anyone think of way to alter ventilation ducts on a typical ERV or HRV to do so that is safe for the systems and for me?

In Mechanicals | Asked By Antonio Oliver | Oct 9 14
2 Answers

Density of polyiso compared to XPS?

A local supply house is running a good discount on Polyiso. My builder is familiar with XPS, but not polyiso, and is asking me about the density. How does it compare?

I think the trouble is that he has been bitten by crumbly EPS in the past and doesn't want to go down that road again.

In Green products and materials | Asked By Clay | Dec 30 15
2 Answers

Windows to use in a north-facing Northern California home?

We are in the process on planning a remodel for our home. As part of the remodel we would like to have a "view" wall on the northern side of our house, where the deck entrance is(so we'd have doors too).

What kind of windows/doors would gba members recommend? My current thinking is to use some PVC tilt&turn door-sized european windows(eg imported from Poland) + some fixed windows. However I have not narrowed down any potential windows suppliers yet.

Where should I look for large, efficient, yet cost-effective window options for a cooling climate?

In General questions | Asked By Tom | Dec 30 15
8 Answers

Pole barn insulation?

I have a 24 x 30 pole barn that I want to insulate. My concern is condensation.

I'm in central Floirda, so heating it will not be done. This space will be A/C only.

The walls have been framed up 2x6. The walls & roof are metal. There is 24" overhang that has a complete soffit & gutters. I have a solar-powered roof fan as the vent for attic area. There is no ridge vent.

The metal siding is a corrugated style with foam gaskets, top & bottom, to keep critters out. The walls I planned on drywalling or plywood?

In Green building techniques | Asked By Bill | Dec 28 15
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