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7 Answers

What's With the SPAM Filter?

Am I on the no fly list here?

I can't seem to post much of anything without the SPAM filter either demanding a CAPTCHA or blocking my post entirely.

No curse words, no hyperlinks.

What gives?

Someone's gotta tame this beast!

In General questions | Asked By Robert Riversong, Master HouseWright | Jan 16 11
17 Answers

Need for a HRV

I am building a reasonably well insulated tight house (R 27.5 walls, R40 roof, R22 ICF crawl space walls, R10 slab) in Victoria, British Columbia (similar climate to Seattle). The walls will have 1 1/2" EPS on the outside, taped to form an air barrier and vapor retarder paint on the interior drywall (no poly air/vapor barrier). Target air exchange rate is 1 to 1.5 air changes per hour. The house will be heated with an electric air to air heat pump. My heating contractor tells me that I do not need a HRV and that at an added cost of $3,000 to $4,000 my pay back period will be forever.

In Mechanicals | Asked By Ross Neuman | Jan 15 11
11 Answers

Foundation Wall Condensation

I'm working on a project in Climate Zone 5. The basement is a walkout configuration. The interior walls of the basement are insulated with 2" polyiso w/ taped seams. The box is insulated w/ 2-3" closed cell foam. The floor (bsmt. ceiing) is insulated with fiberglass batts.

In Energy efficiency and durability | Asked By Chris Harris | Jan 15 11
16 Answers

What is the best option for an existing home in Baton Rouge, LA with regard to sealing the ventilated attic or installing a radiant barrier?

The attic is now ventilated.

And if sealing the attic is the recommendation, which foam (open or closed cell)?

In Energy efficiency and durability | Asked By Wynn White | Nov 14 10
29 Answers

What's Wrong With This Picture?

Here's a place to post pictures that show building practices that violate the laws of nature, building science, good practice, common sense or any combination thereof.

I'll start off with a few from my extensive collection. See if you can describe the mistake. Correct answers will earn you good karma (and maybe some "Helpful" points).

In General questions | Asked By Robert Riversong, Master HouseWright | Jan 6 11
0 Answers

The House as a System

A good video from Affordable Comfort
And a good illustration of Stack Effect starting around 40 minutes into the video

In Energy efficiency and durability | Asked By John Brooks N.Texas Zone 3a | Jan 14 11
3 Answers

Closed Crawl, Radon, DHW Replacement, Sump, etc.....

I recently bought a house that is in general working order but needs some upgrades.

First, the problems:
- The current 30 gal DHW tank is probably on its last legs. It is located in the vented crawlspace and is not installed properly; it is sunk in the ground ~2 ft and has incomplete retainment surrounding it (see picture). This is the low point in the crawl and there is no sump pump currently installed.
- The house failed the radon test by a slim margin and will need mitigation.
- The furnace is in the crawlspace and does not have ducted combustion air.

In Plans Review | Asked By mike gestwick | Jan 14 11
6 Answers

Insulating a brick foundation wall

I'm in Cincinnati, working on a 1820's building on a hillside lot. Sometime long ago a building was built adjacent to this building and they filled the 4' space between the two building and capped it with a concrete walk. The basement extends above grade/sidewalk about 2 feet on this side.

In Energy efficiency and durability | Asked By John spencer | Jan 14 11
3 Answers

Insulating above a root cellar

I am considering putting a root cellar under a house that I am planning to build. Because it will be used to store foodstuffs, I wish for it to stay cool, therefore I won't insulate either the floor or walls. However, I wish to insulate the wood-framed ceiling above, which is the floor for the living space.

If the outside of the cellar is well-drained, should I have any problems with moisture accumulating in the framing/insulation of the main floor?

In General questions | Asked By John Hess | Jan 14 11
6 Answers

Ventilating a crawlspace for termite prevention

1. I had a termite contractor visit my home in Atlanta Georgia the other day. My house is 26 years old and has a crawlspace below the laundry room and the kitchen eating area. There is an unfinished basement under the rest of the house. The vendor told me I need to cut vents in the crawlspace in order to reduce the moisture which will cause floor warping and possibly lead to a haven for termites. I have read different recommendations on venting or not venting. What are the best recommendations for this crawlspace.

In Energy efficiency and durability | Asked By Scott Razzino | Jan 12 11
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