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3 Answers

They didn't completely hook the cold air return on my furnace. Is that OK? What could happen?

can just using indoor instead of fresh outside air cause any problems?

In Mechanicals | Asked By Roger Blankenship II | Feb 1 16
1 Answer

Moisture accumulating before vapor barrier installed.

I'm in zone 7A and built an attached garage this fall: in slab heat, 2X6 walls, Rex wrap and OSB sheeting. The in floor heat got hooked up and turned on the beginning of January at the same time I began insulating the walls with unfaced fiberglass batts and faced batts in the ceiling.

Before I got poly vapor barrier up on the inside, there was a large amount of moisture (it was frost when it was cold outside) accumulating on the inside of the sheeting behind the batts.

In General questions | Asked By Neil Knutson | Feb 3 16
13 Answers

Proper crawl space encapsulation and also radon mitigation questions

Hello, I own a 1968 cape cod style home in East Stroudsburg in the Poconos, PA (region 5). It has a full basement with 7' ceilings and concrete floor with probably little to no crushed stone underneath. At some point, there was a ditch cut out along 2 of the walls, with stone and probably a perforated pipe added, and concrete poured back except for a small channel along the block wall. This leads to a sump pit.

Adjacent to one of these 2 walls is a crawl space entrance where an addition was put in.

In General questions | Asked By Ryan O'Rourke | Jan 26 16
2 Answers

What is the ideal choice of cladding over OSB-Sheathed SIPs?

Hey Martin,

I find myself in a situation similar to one discussed here in the past regarding putting masonry, i.e. thin veneer, over SIPs. The original question was regarding which WRB to use. However for me, unlike the pervious poster, I have time to make course corrections. You previously said this was a "particular risky combination." I would like to know your recommendation of cladding over SIPs if stone veneer is not a good choice.

I live in Maryland, so we get plenty of rain. Just FYI.

Thanks,
William Lohr

In Green building techniques | Asked By William Lohr | Feb 1 16
1 Answer

What makes ceiling fan remotes break?

About 10 years ago, somebody at the Florida Solar Energy Center was involved with the design of the Windward III ceiling fan, which at the time was the most efficient fan money could buy. Due I think to the variable blade pitch. I installed a couple of them and now one of their remotes no longer functions. What causes this and is it repairable?

In Green products and materials | Asked By Charles Campbell | Feb 3 16
1 Answer

Thermoarcilla? Termoarcilla? Thermal Clay?

I've been working with a Spanish carpenter who told me that a lot of walls in Spain are being built with Thermal Clay, which I guess is the translation of Termoarcilla. I have had greast difficulty fining much information online in English (sorry my Spanish is not so good).

Here is some information: http://bloquetermoarcilla.es/en/productos-termoarcilla.php

In Green products and materials | Asked By E T | Feb 3 16
14 Answers

Mitsubisi Heat Pump- heat and cool

I am building a 1 1/2 story barn/garage 36 X 34 with an open upstair 2nd floor. It will have 2" form in the walls and 3" sprayed form in the ceiling. Cement floor. not too many windows and 2 garage doors.

I don't need it heated like a home but just confortable when I work in the barn. I would like to keep it about 40 degrees in the winter when not in use and will rarely need it cool in the summer. I live in southern CT.

I've been looking at the high efficienty units around 24,000 BTU. I also need to be able to set the temperature low (about 40) when not in use.

In General questions | Asked By Fred Gabriele | Jan 31 16
2 Answers

Alternatives to SPF to insulate floor

I have a late 50's ranch house with a vented crawlspace in the San Francisco bay area. There are remnants of old cellulose insulation in the vented attic, though very little remains. The rest of the house is pretty much uninsulated. Even though we are in N. California, the weather gets chilly, and predictably my hardwood floors (and stone/tile floors in the kitchen and baths) have been very cold this winter. I am in the process of finding a good contractor to do a whole home energy audit, and come up with solutions (as green as possible) to make the house more comfortable (i.e.

In General questions | Asked By Zach H | Feb 3 16
1 Answer

Chinese Split Heat Pump Water Heaters

Sanden is getting a lot of attention due to their Eco-Cute split heat pump water heater using CO2 refrigerant.

In China though there seem to be many manufacturers making split heat pump water heaters using Japanese compressors (albeit with more common refrigerants). On alibaba.com or made-in-china.com do a search for "heat pump water heater" or "evi heat pump" or "twin rotary heat pump" and the options seem to be endless.

In Mechanicals | Asked By Osman Anwer | Feb 3 16
3 Answers

Not sure what's going on with this foundation...

This is not my house so questions will take a bit to ask the owner and post, but as i understand it its a century old house near Toronto Ontario, the original basement was concrete but only about half way down, (shown by the hard to see cantilevered foundation) but the basement was dug out to full height and the CMU was installed inside of the original foundation.
The question is what is causing the cracking (is the house shifting, rising or the foundation falling) and how best to deal with it?

In General questions | Asked By Alan B | Feb 6 16
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