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4 Answers

Whole House or Point of Entry Water Filters?

I'm looking to add water filtration to my home, and am trying to figure out whether a whole house water filter, or individual point of entry water filters (ie, at the sink) would be better. It might be easier to just have the one whole house filter installed, but I am wondering if I will ultimately end up filtering a lot of water that doesn't need to be filtered, as opposed to just putting filters at the sinks were water is actually used for drinking, brushing teeth, etc.

In General questions | Asked By Brian Jackson | Aug 19 12
4 Answers

Dark-coloured roof..?

my client wants her standing seam roof to be dark brown. will this, at least partly, sabotage my building's energy efficiency? or is it a non-factor...

In General questions | Asked By erik olofsson | Aug 23 12
2 Answers

What is a good way to attach insulation to earthen walls?

I'm currently looking at building a small home with a focus on using local materials. This is certainly not a new concept in the green building world. Local materials for me (in Golden, B.C, Canada) are wood, earth and stone. There is a Roxul manufacturing plant in southern B.C as well.
My thoughts are to build Compressed Earth Block walls, wood-framed roof and floor systems, and probably a rubble-trench foundation with an earthen floor or concrete slab-on-grade. Many details to work out.

It has been shown here

In Green building techniques | Asked By Nick Furfaro | Feb 24 12
5 Answers

Rigid insulation with OSB in rafters?

So, you guys have been a big help so far. I have another question, spurred by what looks like a good deal on craigslist for new polyiso insulation.

The catch is that this insulation has OSB on one side and paper on the other. I am interested in putting it up within my catherdral ceiling rafters and under the rafters.

How bad would this be to put up? If it is not good, are their any cheap workarounds? The price is half the foil faced at the big box store.

There would be a 1" space between the insulation and the roof, but it technically isn't vented (1950s 1.5 story ranch).

In General questions | Asked By NIkki Horz | Aug 20 12
5 Answers

Does anyone have any experience or hear of magnesium oxide structural insulated planels?

About to begin work with local devleloper who is going to build homes using magenesium oxide SIPS. Claims that magnesium oxide panels are the "dry wall" of China. Have reviewed mock up w/ out staff architect and the material looks sound enough. The concept is sound, but has anyone ever heard of magnesium oxide panels or used them? Anyreferences would be helpful. Thanks.

In GBA Pro help | Asked By mike keesee | Jan 26 12
2 Answers

My signature...

How can i edit my 'signature' so that it gives all my zone info?

In General questions | Asked By erik olofsson | Aug 23 12
5 Answers

Off or On Grid?

We are planning to build a 2 story with basement 28x34' near Passive House in northern NH. It will cost > $25K to bring in power at the expense of cutting that will worsen the aesthetics (ie the swath....).
Our present electrical use without being careful in a similar sized home heated with oil ranges from 6KWhr (July) to 15 kWhr (Jan) per day. We would pay 16-17c/KW on grid and only get a 4c premium if we hooked in....

In PassivHaus | Asked By Phil Lawson | Aug 23 12
8 Answers

HRV or ERV or neither?

we are building a small 600 sq' house in valemount, b.c.. we are planning to make it airtight via the plywood sheathing. should we use an hrv or erv or exhaust-only with passive air inlets? anyone care to recommend a cost-efficient manufacturer? also, interested in a detail of a ground loop for the intake air...thanks
other site info: 800 metre elevation, 5623 HDD

In General questions | Asked By erik olofsson | Aug 13 12
2 Answers

Selecting a back-up heat source for a wood stove

We're planning on building a super-insulated, tight house (hopefully starting construction this fall). There will be about 2000 square feet of living space, all heated by a small wood stove. Between the passive solar we have designed and the available wood on our land, we expect this to be a very low-cost way of keeping warm. But, of course, the bank requires a thermostatically controlled source of heat. We expect this secondary heat to be used very rarely-- it's really just there to satisfy the bank-- so we'd like it to be as inexpensive and unobtrusive as possible.

In Mechanicals | Asked By Randy George | Aug 22 12
2 Answers

Cool Shingles

I need a new roof and my home is located in Pittsburgh, PA. I was browsing the Owens-Corning website looking for a light, EnergyStar color when I stumbled upon their solar reflective "Cool Shingles". I have asked 6 roofers for an estimate and none of them have heard of them, nor are they interested in giving me an estimate on them. Two of the roofers tried to completely talk me out of them even though they admitted to not knowing much about them.

In Energy efficiency and durability | Asked By Carol Baer | Aug 22 12
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