[Greenbuilding] Year-round thermal comfort & insulation

Sun Jul 15 17:30:26 CDT 2018

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
> Scotland Lane
> Burton Overy
> Leicester LE8 9DR
> Email : paul.hadfield at firelight.co.uk
>
> Mobile 07867 978537 or 07071 202354
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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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