Community: Plans Review

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7 Answers

New earth sheltered PAHS construction

I would like all opinions regarding my new home construction project. I have a full 3 days experience learning Sketchup and have managed to put several ideas on paper. Please review my plans...and pick holes in them :). I don't guarantee to change my mind, but I do promise to research varying opinions thoroughly and supporting data would be appreciated.

Mixed humid climate Missouri 39 deg latititude
CoMo HDD 5173
CDD 396
Sunny days 195
Humidity ave 70% 83% AM, 56% PM
111 days rain for 46"/yr
10 days snow for 14"/yr

Asked By Laurel Davison | Nov 28 16
20 Answers

I’m remodeling a roof constructed from tongue-and-groove cedar planks that serve as a cathedral ceiling

I'm re-modeling a roof (~1:4 slope) constructed from 2.75" x 6" cedar planks (tongue & groove) that serve as a cathedral ceiling, structural support, and roof sheathing. (In Climate zone 5.) I have a tentative plan of adding 7.5" of polyiso sheet and then a metal roof.

The part of the house this roof covers is 24' x 28'. The roof has 4.5' overhangs on the north and south sides. The only penetrations are 1 vent fan, a light tube, and vent for water heater.

Asked By Robert Hudson | Nov 13 16
8 Answers

Custom French trench drain design for specific soil & flooding

I live in rural CO and have a mix of silty fine dirt and clay in my yard. I get some standing water in this portion of my yard during Spring snow melt and flash rains. I also get some of this water (only 1" standing in 1/5 of area) minorly in my 50 year old, 4 foot high crawlspace. It travels under the footer which is about 48 inches deep and 10 feet away on the same side of the home where I have room to put the trench, same side the yard water stands.

Asked By Andy Nels | Sep 28 16
1 Answer

Sheet metal over interior studs: Mold issue?

I'm a homeowner / GC who's building a custom home. We're using 1 1/2" Roxul for exterior insulation, 1" closed cell foam on the interior seathing, and cellulose in the remaining 2 x 6 stud cavities.

Asked By Ryan Lazuka | Sep 23 16
3 Answers

Basement insulation with different slab levels

My proposed basement has 2 levels and I am trying to finalize the details to insulate where the 2 levels meet. I am planning on insulating the perimeter walls from the inside. However, where the floor levels change I am contemplating insulating under and around the footer, and then up the sides of the foundation wall to the top of each slab. The assembly from top down is 4" concrete, vapor barrier (not shown), 4" of EPS type IX, 4" of 1/2" clean stone, undisturbed earth. The footer is 30" wide x 12" and the foundation wall is 12" wide, standard size around here.

Asked By Jonathan Lawrence | Sep 18 16
16 Answers

Who’s up for another house plan review?

Last time someone posted a house design, people seemed to enjoy critiquing it. If you enjoy doing that, here is another chance. If not, please ignore this thread.

I created this house plan with my in-laws in mind. We are trying to convince them to move closer to us near Flint, Michigan. If we can find a nice lakefront lot to build on and a good design, we might have a chance. They are retired. Stairs are not currently a problem for them, but the house is designed so that they wouldn't need to go to the second floor.

Asked By Reid Baldwin | Sep 11 16
13 Answers

Best HVAC system and suggested improvements

My wife and I are seriously considering building a home on a large lot in a rural area near Rochester, NY (Zone 5). Our general plan is a single story house slab-on-grade house with a partially enclosed courtyard. It poses some challenges, because for its floor area, it has a large and long footprint. I've attached my rough plan for the house, with the hope that I can get some good insight from the GBA crowd.

Asked By John Ranson | Aug 30 16
12 Answers

Zone 7 (Saskatchewan) — new four-season garage / workshop

Apologies if this has been asked before, I have read a lot of similar designs but have not found someone using this same assembly in a very cold climate. Here is the plan:

Exterior to interior:
5/8" Fiber cement board siding (Hardie Plank)
3/4" (1x4) wood furring strips (to hold insulation and act as vented rain screen)
3" Mineral wool (2 layers of 1.5" roxul comfort board 110, staggered seams). R=4.2*3=12.6
1/2" Fiberglass gypsum (GP DensElement, with PROSOCO fast flash to act as ARB and WRB). R=0.5
5.5" (2x6) wood studs with DP cellulose in cavity. R=18

Asked By Craig Hoehn | Aug 1 16
3 Answers

Wall and cathedral ceiling assemblies

I am trying to finalize my assemblies for my Passive House and would like to solicit some feedback at this point. The project is located in NJ in zone 4a, although I am only a few miles from zone 5. I would like to avoid high GWP products. Attached is my proposed wall/cathedral ceiling assembly.

The wall assembly is as follows:
1) Fiber cement siding
2) 1x4 vertical furring strips to provide a nailing surface for the siding and a rain screen.
3) 3” of Roxul ComfortBoard (thermal barrier)
4) 7/16" Zip sheating (air barrier and WRB)
5) 2x6 studs, 16” OC filled with DP cellulose

Asked By Jonathan Lawrence | Jul 31 16
7 Answers

Wall stack for climate zone (4)

I'm going to be building a new house in Tennessee, climate zone (4). The local codes use 2012 IBC but call for the 2009 International Energy Conservation Code.

I have a couple of restrictions due to the builder / community HOA ... these are 2X4 walls and vinyl siding. Also restricted to a 12-4 roof and 1 story house.

Asked By Stephen Cook | Jul 1 16
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