Recent Comments and Answered Questions on Green Building Advisor

  • Mark Waldron | Nov 23,2017 04:48 PM EST
    Roger, thanks for your comments and the practical considerations you have pointed out I'm searching for much the same thing as Jon. I need approx. 14K lumens of ambient light for a large room, ...
  • James Morgan | Nov 23,2017 04:38 PM EST
    I'll confess to being bewildered by this post - why on earth would you want to do this? First of all, if cob is an economical building material in your part of France the chances are it already ...
  • scott mangold | Nov 23,2017 04:24 PM EST
    I am in zone 5, Connecticut
  • Malcolm Taylor | Nov 23,2017 03:26 PM EST
    Scott, Where are you? Some codes require the fresh air intakes to be in the bedrooms.
  • Malcolm Taylor | Nov 23,2017 11:27 AM EST
    I can't remember the exact address, but it was on O'Connor street. We used the same details as most other building at that time, so although I can't claim individual responsibility for your wife's ...
  • Ryan Magladry Ottawa, Ontario | Nov 23,2017 09:54 AM EST
    throwing this out there...does the occupant have honeycomb style blinds, that may restrict air movement? Our house, RH 35% with builder grade dual paners, gets significant overnight ...
  • Ryan Magladry Ottawa, Ontario | Nov 23,2017 07:59 AM EST
    Malcolm, i know thats a long time ago, but might that have been Summerset Towers on Carling Avenue, my wife used to live there while we were dating, and that patio doors were all elevated ...
  • Martin Holladay | Nov 23,2017 06:52 AM EST
    Charles, If you don't have access to the crawl space, then obviously you have only one option -- leaving the water running on cold nights. (I'm guessing that a cold night in Atlanta means a night ...
  • rich cowen | Nov 22,2017 10:29 PM EST
    HVAC guy got busy so wasn't able to come out this week but I might be able to answer those questions next week. Remember we are talking about a 13 year old motor; hard to say if that motor is ...
  • Ryan O'Rourke | Nov 22,2017 10:28 PM EST
    Re this question "So looks like I will end up with a 5" wall. 1" polyISO (I'l try and track down the dow thermax for this). Then my 2x4 stud wall. Then in the stud cavities, is Roxul OK, or would ...
  • charles CAMPBELL | Nov 22,2017 10:19 PM EST
    Thanks for the replies, all. Jon, we need intermittent water, so purging is not an option. Martin, you wrote, "Take your pick." Do you have any insight into which or what combination is least ...
  • Ryan O'Rourke | Nov 22,2017 10:14 PM EST
    Thank you both for the comments. Dana: Great info, thanks. I will follow your advice and lay a 4.5" wide 1" layer of EPS against the slab adjacent to my block wall. How crazy do I go with ...
  • Malcolm Taylor | Nov 22,2017 09:06 PM EST
    At least they are in Atlanta. I remember working on drawings for a high-rise in Ottawa in the late '80s with the same concrete balcony detail. The thermal bridge was kept warm by a baseboard ...
  • Jon R | Nov 22,2017 05:09 PM EST
    If your situation allows it, it would be least environmentally damaging to turn off the heat and water and purge the pipes with compressed air.
  • Jon R | Nov 22,2017 04:36 PM EST
    Using Dana's figures (or a couple of $400 window heat pumps) with replacement every 5 years and any reasonable interest rate, I can't make additional solar PV and resistance heat work on a $ ...
  • Dana Dorsett | Nov 22,2017 03:36 PM EST
    A vented crawlspace in Atlanta has no advantages, only disadvantages, and it allows more moisture into the house than it purges, increasing the latent cooling load, AND the sensible heating ...
  • Dana Dorsett | Nov 22,2017 03:31 PM EST
    If double layering the polyiso you can save a few bucks by using Thermax for only the exterior inch, which would keep the interior 2" on the sweet side of the derating curve for cheaper polyiso ...
  • Dana Dorsett | Nov 22,2017 03:11 PM EST
    Even buck a watt solar costs a grand per kw, and every kw of heating efficiency saves on the order of a kw of PV. If he's able to heat the place comfortably with a standard 4.5kw water heater, ...
  • Martin Holladay | Nov 22,2017 03:11 PM EST
    Charles, Here in Vermont, everyone knows that pipes in a vented crawl space will freeze. That's why Vermonters with crawl spaces make sure that their crawl spaces are sealed. For more information ...
  • Dana Dorsett | Nov 22,2017 02:03 PM EST
    With a fully functioning but oversized furnace there's no payback on a motor swap in dollar terms, and probably not in other terms either. The noise from the air handler won't change with the ...
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