Recent Comments and Answered Questions on Green Building Advisor

  • | Feb 16,2018 03:14 PM EST
    I don’t recall where I got sub-basement from- probably the realtor. It’s a basement- 23’ x 25’. We use the basement for storage, and I am setting up a wood shop down there. I already am all ...
  • Dana Dorsett | Feb 16,2018 02:31 PM EST
    Westchester is zone 4A. IRC code min for zone 4 is R10 continuous on the walls, or R19 under the sub-floor. You may want to do both. A sub basement is a space below the basement floor. I'm ...
  • | Feb 16,2018 02:17 PM EST
    I’m in Westchester County. I have no furnace. My whole house is electric, but I use wood 24/7 and my wood stove is in an ideal location and heats the house. My basement is a sub basement and is ...
  • Dana Dorsett | Feb 16,2018 02:03 PM EST
    A few MORE months without power does a lot to drive markets: https://www.greentechmedia.com/articles/read/grid-defection-on-the-rise-in-puerto-rico#gs.3w=_eow Microgrids may not be the ...
  • Martin Holladay | Feb 16,2018 01:53 PM EST
    Jake, Either adding a continuous layer of rigid foam, or using thin strips of foam at the studs (following the Bonfiglioli approach) does a better job of reducing thermal bridging through the ...
  • Dana Dorsett | Feb 16,2018 01:43 PM EST
    It's not a matter of "should", but a matter of what you want. A full sheet of foam over the interior will inhibit drying toward the interior, so a better description of the total wall stack-up ...
  • Martin Holladay | Feb 16,2018 01:35 PM EST
    Michael, Many homeowners don't know what inputs to use for plug loads -- and even if they have an idea, actual usage depends on behavior. That's why I wrote that BEopt can't predict electricity ...
  • | Feb 16,2018 01:33 PM EST
    I was going to thicken my 2x4s into 2x6s. You think I should go the rigid over the insulation route? Maybe 1”?
  • Dana Dorsett | Feb 16,2018 01:22 PM EST
    If your furnace or boiler or water heater is in the basement the there is much greater value to be had from insulating and air sealing the foundation walls than there is to insulating the basement ...
  • Martin Holladay | Feb 16,2018 01:05 PM EST
    Jake, Your question is unclear. Do you want to thicken each 2x4s with ripped lumber, turning each stud into something like a 2x6? (If so, that's not a good insulation strategy.) Do you want ...
  • Martin Holladay | Feb 16,2018 12:37 PM EST
    Lance, Sorry about the bad link. I just fixed it. Thanks for letting me know.
  • Dana Dorsett | Feb 16,2018 12:27 PM EST
    Yesterday the Federal Energy Regulatory Commission issued a unanimous order that grid operators create special market tariffs for grid storage, stipulating that if a minimum size is required for ...
  • | Feb 16,2018 12:13 PM EST
    Zehnder has their ERVs listed on the HVI product directory, so they do have comparable stats available. They told me not only will they sell to me directly, they couldn't even offer installation. ...
  • | Feb 16,2018 11:24 AM EST
    I'm getting a quote/design from Zehnder. I guess I will wait for that and see how it looks compared to what I am guessing the builder intended. I think Zehnder uses a similar type duct. I suspect ...
  • Jim Erdman | Feb 16,2018 10:53 AM EST
    We have 2 Fujitsu Halcyon units in our over 100 year old farmhouse. We installed them to provide heat in the shoulder seasons, fall and spring, when our wood furnace (forced air unit in our ...
  • Jon R | Feb 16,2018 10:50 AM EST
    I'd read a few things like below and consider if you want a ERV(s) that can optionally ventilate at better than code levels. Operation doesn't cost much, especially in milder weather. Also ...
  • Jeremy Archer | Feb 16,2018 10:49 AM EST
    T. Carlson I can give you a little breakdown on my all electric house. On a monthly base from the end of March 2017 to the end of Oct 2017 my house averaged 23 KWH a day. That is without air ...
  • Lance Peters | Feb 16,2018 10:19 AM EST
    Martin, your link directs to the main Q&A page, not the intended article.
  • Lance Peters | Feb 16,2018 10:00 AM EST
    Hi Trevor, I double checked with the City of Ottawa officials just two weeks ago regarding ventilation requirements. They claim the 2013 standard is only a recommendation and that the 2010 ...
  • | Feb 16,2018 09:57 AM EST
    Bob, I appreciate this input. We closed-cell spray foamed the roof and gable walls, and intended to do the remainder of the house in the similar fashion; however, I'm really turned on to mineral ...
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