[Greenbuilding] Year-round thermal comfort & insulation
Reuben Deumling
9watts at gmail.com
Sun Jul 15 20:31:52 CDT 2018
John can you say a few more words about that?
I'm not familiar with the hormetic effect, but did look it up, briefly.
On Sun, Jul 15, 2018 at 6:26 PM, John Salmen <terrain at shaw.ca> wrote:
> Radon is an interesting thing – the risk exposure levels that are being
> currently used were extrapolated downward from high level radon exposure
> (miners etc). It hasn’t subsequently followed that model and low level
> exposures in studies have been shown to actually reduce the lung cancer
> associated with radon by as much as 60% from the ‘risk factor’ – hormetic
> affect.
>
>
>
> *From:* Greenbuilding [mailto:greenbuilding-bounces@
> lists.bioenergylists.org] *On Behalf Of *Michael O'Brien
> *Sent:* Sunday, July 15, 2018 6:15 PM
>
> *To:* Green Building
> *Subject:* Re: [Greenbuilding] Year-round thermal comfort & insulation
>
>
>
> Hi, George—
>
>
>
> We ran some boreholes to sample our soil down to about 9 feet. It’s mostly
> sand, so unlikely to be a radon source. I also checked the DOGAMI radon
> maps that record radon tests and our neighborhood is pretty low.
>
>
>
> Radon has to piggyback with air, so if the slab is continuous there should
> be no air leaks where radon could enter. Having a tight shell also reduces
> any pressure differential that would drive air/radon transport.
>
> Best, Mike
>
> Sent from my iPhone
>
>
> On Jul 15, 2018, at 3:41 PM, ErgoDesk <ergodesk at gmail.com> wrote:
>
> Radon: https://www.google.ca/search?q=radon+shield&num=100&
> newwindow=1&rlz=1C1CHBF_enCA777CA777&source=lnms&tbm=isch&sa=X&ved=
> 0ahUKEwiC4ZS5laLcAhXZHjQIHUh3C4EQ_AUICigB&biw=1280&bih=596
>
>
>
>
>
> [image: Styrohome]
>
> *George Hawirko*
>
> *Product Designer* | Styrohome
>
> ,
>
> Insulated Building
>
>
>
> Envelopes
>
> Phone: 604-477-7897
>
> Site: about.me/StyroHome <http://about.me/styrohome>
>
> Email: ergodesk at gmail.com
>
> Skype: ergodesk
>
> Address: #971 12151 224 St.
> Maple Ridge, BC V2X 7N5
> CANADA
>
> [image: linkedin] <https://www.linkedin.com/in/styrohome/>
>
> [image: twitter] <https://twitter.com/styrohome>
>
>
>
>
>
>
>
> On Sun, Jul 15, 2018 at 3:32 PM Peter Kidd <peterkidd at shaw.ca> wrote:
>
> What's a radon SHIELD
>
>
>
> Sent from my BlackBerry 10 smartphone.
>
> *From: *ErgoDesk
>
> *Sent: *Sunday, July 15, 2018 5:27 PM
>
> *To: *Green Building
>
> *Reply To: *Green Building
>
> *Subject: *Re: [Greenbuilding] Year-round thermal comfort & insulation
>
>
>
>
>
> Was a RADON Shield installed under the Slab?
>
>
>
>
>
> [image: Styrohome]
>
> *George Hawirko*
>
> *Product Designer* | Styrohome
>
> ,
>
> Insulated Building
>
>
>
> Envelopes
>
> Phone: 604-477-7897
>
> Site: about.me/StyroHome <http://about.me/styrohome>
>
> Email: ergodesk at gmail.com
>
> Skype: ergodesk
>
> Address: #971 12151 224 St.
> Maple Ridge, BC V2X 7N5
> CANADA
>
> [image: linkedin] <https://www.linkedin.com/in/styrohome/>
>
> [image: twitter] <https://twitter.com/styrohome>
>
>
>
>
>
>
>
> On Sun, Jul 15, 2018 at 3:05 PM Beatrice Dohrn via Greenbuilding <
> greenbuilding at lists.bioenergylists.org> wrote:
>
>
>
>
> ---------- Forwarded message ----------
> From: Beatrice Dohrn <beatricedohrn at yahoo.com>
> To: Green Building <greenbuilding at lists.bioenergylists.org>
> Cc:
> Bcc:
> Date: Sun, 15 Jul 2018 15:03:49 -0700
> Subject: Re: [Greenbuilding] Year-round thermal comfort & insulation
>
> FYI: I am also in the PNW, I built my house from Faswall (like Durisol,
> but local). It has a basement, ground floor and bedroom 1 flight up. THe
> walls are, I think, R28. THe roof is a sandwich with 9” of Polyiso in it.
> So mass and decent insulation given the mild temps here. THe basement —
> which is 2/3 in ground and 1/2 exposed to the East — never gets above 65 or
> below 58. The ground floor is easy to keep cool in heat waves by managing
> day and night window positions. The upstairs disappoints me in geting too
> warm and I find it difficult to get air moving without some mechanical
> ventilation..... I thought I had designed something that would work
> better....
>
> Best, BEatrice.
>
>
>
>
>
>
> On Jul 15, 2018, at 12:10 AM, Paul Hadfield <paul.hadfield at firelight.co.uk>
> wrote:
>
> Reuben says: "Thermal mass (such as a brick or stone wall) would I think do a much better job producing comfortably cool summer evenings, but would not accomplish much in the winter"
>
>
>
> As Mike says, doesn't thermal mass provide a flywheel of heat through cold periods, as building 2226 <https://www.detail-online.com/article/house-without-heating-office-building-in-austria-16667/> (non-domestic, admittedly) shows?
>
>
>
> Paul Hadfield.
>
>
>
>
>
> On Sat, 14 Jul 2018 at 19:00, <greenbuilding-request at lists.
> bioenergylists.org> wrote:
>
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> Today's Topics:
>
> 1. Year-round thermal comfort & insulation (Reuben Deumling)
> 2. Re: Year-round thermal comfort & insulation (Mike O'Brien)
>
>
>
> ---------- Forwarded message ----------
> From: Reuben Deumling <9watts at gmail.com>
> To: Greenbuilding <greenbuilding at lists.bioenergylists.org>
> Cc:
> Bcc:
> Date: Sat, 14 Jul 2018 07:43:24 -0700
> Subject: [Greenbuilding] Year-round thermal comfort & insulation
>
> I like insulation: the more the better as far as I'm concerned. For
> keeping the cold out (speaking colloquially) I've found that careful
> attention to air sealing and insulation pays huge dividends. But for
> keeping the summer heat out, I'm finding that the same insulation does a
> far less admirable job. Stretches of direct sun not only manage to heat up
> the room/house, it feels like the insulation then does a good job of
> holding that just-gained heat in. While cool nights with the windows open
> typically solves the problem in our relatively mild PNW climate I'm still
> perplexed why the seasonal symmetry I (naively) expected is not evident.
>
> The walls in question have two parallel but isolated sets of studs and as
> much dense packed cellulose as I my Forec 2 insulation blower can force
> into the nooks and crannies. Thermal mass (such as a brick or stone wall)
> would I think do a much better job producing comfortably cool summer
> evenings, but would not accomplish much in the winter. Are there hybrid
> wall assemblies I'm not aware for? What am I missing?
>
>
>
> Planned remedies: learn to make exterior shutters, plant more trees.
>
>
>
> Thanks!
>
>
>
>
> ---------- Forwarded message ----------
> From: "Mike O'Brien" <obrien at hevanet.com>
> To: Green Building <greenbuilding at lists.bioenergylists.org>
> Cc:
> Bcc:
> Date: Sat, 14 Jul 2018 08:40:38 -0700
> Subject: Re: [Greenbuilding] Year-round thermal comfort & insulation
>
> Hi, Reuben—
>
>
>
> In our house we used lots of insulation, and also thermal mass. The house
> is built on a slab, the southern end has a clay finish floor, it has
> Durasol walls on the south side, and there is a cob wall in the interior.
> We also installed an ecoroof on the south facing side, which helps reduce
> thermal gains on that area. I believe the thermal mass helps dampen the
> temperature swings, especially noticable in extreme weather. The
> west-facing windows are shaded by a big cedar tree and a (sprawling)
> wisteria, and the west-facing roof has solar water panels on it. With your
> same night-flushing strategy, our house remains comfortable, even when the
> outdoors is in the 90s.
>
>
>
> Best,
>
> Mike
> (503) 819-8991
>
>
>
> On Jul 14, 2018, at 7:43 AM, Reuben Deumling <9watts at gmail.com> wrote:
>
>
>
> I like insulation: the more the better as far as I'm concerned. For
> keeping the cold out (speaking colloquially) I've found that careful
> attention to air sealing and insulation pays huge dividends. But for
> keeping the summer heat out, I'm finding that the same insulation does a
> far less admirable job. Stretches of direct sun not only manage to heat up
> the room/house, it feels like the insulation then does a good job of
> holding that just-gained heat in. While cool nights with the windows open
> typically solves the problem in our relatively mild PNW climate I'm still
> perplexed why the seasonal symmetry I (naively) expected is not evident.
>
> The walls in question have two parallel but isolated sets of studs and as
> much dense packed cellulose as I my Forec 2 insulation blower can force
> into the nooks and crannies. Thermal mass (such as a brick or stone wall)
> would I think do a much better job producing comfortably cool summer
> evenings, but would not accomplish much in the winter. Are there hybrid
> wall assemblies I'm not aware for? What am I missing?
>
>
>
> Planned remedies: learn to make exterior shutters, plant more trees.
>
>
>
> Thanks!
>
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> --
>
> Paul Hadfield
>
> Firelight Open Fires Ltd
>
> Springside House
>
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> ---------- Forwarded message ----------
> From: Beatrice Dohrn via Greenbuilding <greenbuilding at lists.
> bioenergylists.org>
> To: Green Building <greenbuilding at lists.bioenergylists.org>
> Cc: Beatrice Dohrn <beatricedohrn at yahoo.com>
> Bcc:
> Date: Sun, 15 Jul 2018 15:03:49 -0700
> Subject: Re: [Greenbuilding] Year-round thermal comfort & insulation
> _______________________________________________
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