Recent Comments and Answered Questions on Green Building Advisor

  • Terry Sharpe | Feb 26,2017 12:23 AM EST
    I suppose its close to a cape cod house, but i don't have the lower triangular knee walls - the roof actually ends halfway up. But fair enough - half of the cape cod problems are the ...
  • Erich Riesenberg | Feb 25,2017 09:21 PM EST
    What is frustrating to me is that for a large subset of people who pay any attention at all to energy efficiency, things like shipping container homes occupy a substantial amount of day to day ...
  • JAMES KREYLING | Feb 25,2017 08:54 PM EST
    It certainly sounds like you HVAC contractor has no clue about a sensible and reasonable design layout for an HRV system for your home. Don't get sucked in and ripped off. Do your research on ...
  • Rebecca Borton | Feb 25,2017 07:19 PM EST
    Sorry my wife typed this out for me and it should have been HRV concepts/design. We have had a heat load analysis completed and the boiler for the radiant warmboard, heat is sized correctly. The ...
  • Steve Knapp CZ 3A Georgia | Feb 25,2017 06:35 PM EST
    Your HVAC system should be based on a Manual J. Has he done one? If he hasn't or doesn't know how to complete the calculation, you should hire an independent HVAC engineer and also ask him/her to ...
  • Andrew Bater | Feb 25,2017 04:48 PM EST
    Did some rainy afternoon SIP problem "Googling". A few references to Juneau and elsewhere but overall it seemed you had to drill through a number of search page results to find recent horror ...
  • user-6759891 | Feb 25,2017 02:16 PM EST
    Hi Martin, yes, I'm aware of this but after much reading on your site and others I was under the belief that a little moisture like that is ok, even for a finished basement, as long as (1) water ...
  • Steven Meldrum | Feb 25,2017 02:00 PM EST
    Hi Tim, Thanks for your comments. I will have to get some engineer input about the road design loads. I'm going to go back to the 1/2" ply on the rafters with the additional 1.5" eps and 3/8" ...
  • Tim Rudolph | Feb 25,2017 12:43 PM EST
    Hi, since this is a house on wheels you need to build a strong plywood box with the plywood directly nailed to the main framing. Moving the house down the road at 55 mph is a significant load on ...
  • nssimpso | Feb 25,2017 12:09 PM EST
    Thanks for your answer Dana. Both good points.
  • Steven Meldrum | Feb 25,2017 11:15 AM EST
    Thanks Martin, I will have it checked by an engineer and let you know what they say. User756436, Thanks for sharing your detail. Looks like a nice system using thermacal and zip. Would be ...
  • Peter Yost | Feb 25,2017 10:59 AM EST
    I have never worked on a really big building Armando so I am assuming that performance testing for water penetration and the like is done with the help of really big cranes or cable window-washing ...
  • Peter Yost | Feb 25,2017 10:56 AM EST
    Interesting question Alistair. But to be clear: the Commissioning Provider (CxP) only advises and verifies so that the liability is entirely on the Architect on Record, the Engineers on Record, ...
  • Peter Yost | Feb 25,2017 10:45 AM EST
    My mistake Jonathan - not sure why I claimed to know how building this was under construction. I am editing the caption accordingly. Thanks.
  • Charlie Sullivan | Feb 25,2017 09:33 AM EST
    My new favorite way to explain the irrational attraction to shipping containers is by analogy to the story of stone soup. If you haven't heard that story, it's about a hungry traveler who tells ...
  • Martin Holladay | Feb 25,2017 07:08 AM EST
    Todd, If you perform this test, it's quite possible to get moisture under the poly even if you have never seen damp concrete. Evaporation occurs continuously, so the fact that the surface of the ...
  • user-6759891 | Feb 25,2017 06:43 AM EST
    Hi Martin, no, I haven't tried that; though, I'm aware of that test and have read that article before. I never bothered trying it because since I've had the house for the past few years I've ...
  • Martin Holladay | Feb 25,2017 06:15 AM EST
    Terry, Q. "Is there a way to insulate this structure to code, or even kind of close to code, without tearing off one or the other [the roofing or the ceiling]?" A. No. For more information, ...
  • Martin Holladay | Feb 25,2017 06:09 AM EST
    Todd, Have you tried taping a square of polyethylene to the concrete for 24 or 48 hours, so see if moisture beads up under the poly? The test is described in this article:
  • Martin Holladay | Feb 25,2017 05:53 AM EST
    Inger, I don't have contact information for Matthew Vrazel, but my Googling reveals that he works in the St. Louis, MO area. You could probably call the national headquarters and try to reach him ...
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