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4 Answers

Will this rainscreen assembly work for this application?

I am building a tiny house on wheels and I wanted to have a rain screen included. I would just like to use a mesh product for ease of installation and fastening options later.

I live in southeastern South Dakota. I will be using a 1" standing seam metal roof with a 5/8:12 pitch.

I have included a rough sketch and was wondering if it would work to have a continuous and connected wall and roof rain/vent screen?

In General questions | Asked By Damon Beck | Jul 21 16
7 Answers

Solar Water Behind a Window

First a quick back story: I live in Halifax, Nova Scotia, which to my knowledge is zone 5...? I'm getting condensation on my cold water pipes, where the pipes first enter my house from my well. In another question about this issue, Charlie Sullivan was kind enough to offer a suggestion of using a drain water heat recovery unit to preheat the cold water. Which, really is a great suggestion as it's 100% passive.

In Mechanicals | Asked By Calum Wilde | Jul 21 16
2 Answers

You told someone that they could patch open cell foam insulation with

You told someone that they could patch open cell foam insulation with spray insulation from the hdw store. The spray "stuff" that I am familiar with is of the closed cell variety. Is it that to which you are referring? Please advise, as I have some holes that need repairing.

In Green products and materials | Asked By Kenneth Sayers | Jul 21 16
8 Answers

Deck frame: cedar vs. steel

I am interested in opinions on whether northern white cedar is a good material to use for a deck frame. I've heard opinions that it actually lasts longer than pressure treated pine, but also doubts about using it structurally. I would protect the tops of the joists with some kind of flashing, as that seems to be where wood decks rot, and upsize the joists as called for in structural tables for the lower strength.

In Green products and materials | Asked By Charlie Sullivan | Jul 21 16
1 Answer

Exterior foam over 2 layers of siding a bad idea?

Zone 7, 100 year old house has 2 layers of siding. The original siding has lead paint of course. The outer siding won't hold paint. Was insulated in the 70s with formaldehyde foam injected into the wall cavities. Current plan is to use SPF as external insulation, using vertical furring strips embedded in the SPF to secure the new siding. The inner siding has a 4" reveal while the outer is more like 12" reveal. There are vertical furring strips between the 2 layers of siding which creates an air gap.

In Energy efficiency and durability | Asked By Tim Lange | Jul 21 16
15 Answers

Houston home

A would appreciate advice on a home about to be constructed in Houston, TX.

What would be best materials to use for:

1. Exterior walls. Would R19 walls be considered good?
2. Attic (Insulation underneath the roof or on top of ceiling)? Is Foam insulation recommended, if so what would work best?
3. Roof: would a metal roof be a good idea?
4. HVAC. Are minisplits recommended? Would supplemental heating be required if a heat pump is installed?

In GBA Pro help | Asked By Venkat Y | Jul 21 16
3 Answers

Net zero is not expensive?

I'm having a home built and am trying to go net zero with PV and an all electric home. The solar guy and some contractors are very surprised when I say it can be done with 4 kw of panels and fairly standard construction and heating system. I'd like to run my numbers by the wise advisers here and you can tell me if I'm wrong.

In Mechanicals | Asked By Brad H | Jul 20 16
56 Answers

Transoms and Ductless Minisplits

Hello,

I am trying to heat and cool my second floor with one 12,000 btu ductless minisplit. I have heard that this is possible if I keep the bedroom doors open during the day to facilitate circulation of the hot or cool air.

However, does it get uncomfortable quickly in the night when the doors are closed. If so, I was thinking of putting in operable transoms over the doors. The only problem is they are kind of expensive (~$275 from transomsdirect.com). Attached is my floor plan. I will be putting ceiling fans in each bedroom so maybe the transoms would be overkill?

In Green building techniques | Asked By Jimmy Nguyen | Mar 10 16
0 Answers

You told someone that they could patch open cell foam insulation with

You told someone that they could patch open cell foam insulation with spray insulation from the hdw store. The spray "stuff" that I am familiar with is of the closed cell variety. Is it that to which you are referring? Please advise, as I have some holes that need repairing.

In Green products and materials | Asked By Kenneth Sayers | Jul 21 16
10 Answers

What is the best way to attach the sub-slab vapor barrier to the walls?

In regards to laying the 6 mil poly vapor barrier down prior to pouring the concrete slab...

Should the poly wrap up the side walls higher than the concrete floor level, and then be attached to the walls with caulk & furring strips that are anchored to the walls with Ramset nails?

- or-

Should the poly just barely wrap up the side wall, and be taped to the wall (with Tyvek tape or similar) so that the poly and tape are encased in concrete after the floor pour?

-or perhaps this connection is unimportant, as the slab will get caulked on this slab-to-wall joint

In Energy efficiency and durability | Asked By Adam Peterson | Jul 20 16
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