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2 Answers

Sensors in House Envelope

Hi,
We are designing our superinsulated Pretty Good House inspired dwelling. It will be constructed during the summer, 2015, in west central Wisconsin. I am willing to place some instrumentation in the envelope (like temp and humidity sensors) during the build so the house performance can be monitored afterwards.

I'm asking for suggestions for what sensors to place where to get good data. What would you like to see monitored? I am interested in heat flow through the slab and basement walls as well as temp/humidity profile in the above ground walls, but I'm open to any suggestions.

Asked By Karl Overn | Dec 21 14
12 Answers

Woodstoves: does efficient burning depend on size?

We are in the market for a new, non-catalytic woodstove. We understand that a non-cat stove needs a minimum temperature of around 500° for an efficient secondary burn. Question: Does attaining that 500° depend on the size of the stove at all? Or will the same quantity of wood produce the same burn temperature regardless of firebox size? (I know, dry, seasoned hardwood, etc.)

Asked By Patricia Appelbaum | Dec 17 14
5 Answers

What is the best way to insulate our new home?

After reading several of the articles on insulation of walls and vaulted ceilings lately, I am a bit confused. We live in SW Montana. Part of the home includes a vaulted ceiling in the great room, the rest of the ceilings are standard 8' heights. The plan calls for 2x8 rafters in the great room. My plan was to 6" bats in the ceiling, then cover with closed cell rigid board (up to 2 ") then gyp rock to achieve a decent R value. Likewise, the walls are 2x6 so planned on batts with closed cell on outside and then installing cedar board/batten.

Asked By richard fasching | Dec 17 14
4 Answers

Is Advantech better than plywood for subflooring?

My block and beam 1940's house had original tongue and groove 3/4 " pinewood floors in the original rooms of the house. This was the only floor. I've been checking around, and the best advice I've received is to use 3/4 Advantech over the original floors, before laying new 3/4" hardwoods. I believe this to be good advice, but is Advantech needed over regular plywood? And is 3/4" plywood needed over 1/2" plywood?

Thanks for any input.
NM

Asked By N Madrid | Dec 15 14
2 Answers

Cost analysis of thermal bridging in zone 2

Adding an addition to the house. 2x6 at 24". About 60 feet of wall. Cedar shingle siding. Concerned about the cost of installing ridged foam to prevent thermal bridging. Will the energy cost savings ever provide a return on the additional foam, horizontal battens at 5", labor, etc.

Asked By Robert Brown | Dec 15 14
14 Answers

Flat roof insulation

I have built an extension to my house with flat roof, continuation of the existing house. The rafters are 16 in apart and there is 6 in left for the insulation under the sheeting. The plans are requiring R30 insulation and the building inspector requested hard foam Thermasheath- 3, 5 in thick, leaving 1 in for breathing. The drywall was not installed yet, when water from condensation came down all over the place. There are vents on both sides of the roof, in each bay under the insulation level, not allowing the hot air to escape.

Asked By Angela M | Nov 22 13
10 Answers

Humidifier with a flash-and-batt house?

Hello. We are building a house in Virginia and the construction of the exterior wall is: Hardiplank, Tyvek, OSB, 1 inch closed cell spray foam, kraft faced R19 batt, and Drywall.

Our HVAC contractor is not installing the humidifier as he says tight homes don't need them. His comment was we might be calling him to install a Dehumidifier in all probability.

Is that true?

Asked By Susan Larkins | Dec 14 14
8 Answers

To install engineered hardwood flooring over a basement slab, can I use (2) 3/8" CDX plywood over 1/2" XPS?

QUESTIONS: Can I use 2 layers 3/8” CDX Southern Pine plywood (joints staggered, glued & screwed together, but NOT mechanically attached to the slab) over 1/2" XPS? Whether I install the plywood sheathing over a vapor-retarder or rigid foam insulation, is CCA treated plywood necessary in either case? Which installation method (e.g. rigid foam or vapor-retarder) do you recommend in view of my concerns below?

Asked By Kevin Peters | Dec 11 14
8 Answers

To install engineered hardwood flooring over a basement slab, can I use (2) 3/8" CDX plywood over 1/2" XPS?

QUESTIONS: Can I use 2 layers 3/8” CDX Southern Pine plywood (joints staggered, glued & screwed together, but NOT mechanically attached to the slab) over 1/2" XPS? Whether I install the plywood sheathing over a vapor-retarder or rigid foam insulation, is CCA treated plywood necessary in either case? Which installation method (e.g. rigid foam or vapor-retarder) do you recommend in view of my concerns below?

Asked By Kevin Peters | Dec 11 14
14 Answers

PV, electric autos, and the saving grace for utilities

Dana, this sounds like you... interesting how the future has changes the save us from... changes...

Asked By aj builder, Upstate NY Zone 6a | Dec 9 14
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