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9 Answers

Help me design a small building heating/cooling solution

Hi Folks,
My wife and I have just bought piece of property outside of the Boston, MA area (Zone 5a), and we will be building a home there next year (hopefully...just going through the close process). Currently on the property is an existing structure that I am planning on rehabbing, to use as a detached home office and workshop.

In Mechanicals | Asked By Jonathan Petersen | Dec 3 12
40 Answers

Where does the humidity go in a super-sealed building?

I am wondering deeply, and this question makes me doubt all wall designs.

Where does all the humidity go in a super sealed structure ?

Let's assume that a residential house has an almost perfect water vapor barrier setup
and or is very tight ( my personal example is an ICF house ), what happens to all the daily generated humidity by the occupants ??

I understand that nothing is completely vapor diffusion proofed, but if slow enough,
would the humidity level rise without stopping ?

I am asking this because of the following situation ...

In General questions | Asked By Jin Kazama | Nov 29 12
4 Answers

How to build a waterproof concrete deck over living space?

I would like to build rebuild my front porch about 20' x 9' with a storage room underneath. the porch will have a concrete deck pored over corrugated metal sheets. and the porch is open without a cover.
does anyone know how to spec this the deck has to be 100% waterproof


In General questions | Asked By david reiss | Dec 3 12
8 Answers

How to remove pet odors and stains in wood subfloor?

I would like to know what is a good approach to removing pet odors and stains in the wood subfloor. thanks

In General questions | Asked By louie rodriguez | Dec 1 12
5 Answers

Adding thermal mass to an old wood-frame house

Hi. I'm wondering if there's a way to add thermal mass to the floors and internal walls of an old wood frame house without adding so much weight that it compromises the structure. Ideally, I'd like to add more low SHGC glass on the south side wall of a Southwest oriented bedroom, with sufficient overhang to block direct summer sun, but realize that doing so without adding sufficient thermal mass won't result in good heat capture in the Winter.

In Green building techniques | Asked By Noel Kalenian | Dec 3 12
11 Answers

Can Cardinal LoE 180 be applied to both surface #2 and #3 of an IGU ?

I want to install double glazed replacement windows that have high solar heat gain and a low u value. The Cardinal product for this purpose is LoE 180 applied to surface #3. I would like to have the 180 coating applied to both surface #3 and #2 to further decrease the U value but maintain the high solar heat gain attributes of the IGU. My local Marvin window distributor told me that Marvin told him that 180 could not be used on adjacent surfaces as I am requesting. I have not spoken directly to Cardinal about this.

In Energy efficiency and durability | Asked By Tim Ward | Dec 1 12
1 Answer

What is an energy-efficient refrigerator?

Looking for recommendations for an electric refrigerator to use in a solar-powered (photovoltaic system) house. Will also use a freezer as a separate appliance.

In Energy efficiency and durability | Asked By jula bunkham | Sep 9 12
3 Answers

Will I Have Moisture Problems?

I have learned a lot from this forum and have now started to have concerns regarding my home. Our 1900 sq ft ranch style home was built in 2006 and we had little-to-no awareness of the importance of energy-efficiency and green building. We live in a moderate climate, about 35 miles south of St. Louis, MO.

In Energy efficiency and durability | Asked By Ken French | Dec 1 12
2 Answers

Insulation for a cathedral ceiling

I'm working out the details for an addition I'll be building next summer. I'm in northern Minnesota. I'll have a cathedrial cieling at a 10/12 pitch and I'm planning on using 2x12 rafters wo have the room for insulation. The room is 29' wide the direction that the rafters run.
From what I've been reading I don't necissarily need to ventilate the roof as long as I make certain to seal the space very well. I have a couple ideas I'm looking at for that and I'm looking to see if either of my potential ideas have any red flags against them and perhaps pros and cons between them.

In Energy efficiency and durability | Asked By Mark Larson | Dec 2 12
2 Answers

Garage door detail on FPSF

Doing a FPSF w/ an attached garage(heated) in zone 5a. Does anybody have a good detail for an overhead garage door where it contacts the slab? Have a few ideas in mind, but need something that will last. That is one nasty thermal bridge to contend with....

In Green building techniques | Asked By Todd Kalin | Dec 2 12
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