[Greenbuilding] Crawlspace foam insulation -- how much?

[Leslie Moyer]

All plumbing connections are inside the interior of the house except 
some drain pipes, most of which are close to the ground. (The house was 
converted to PEX when we did reno two years ago on 2 bathrooms and 
laundry.)  There are two gas lines down there, but both are short runs 
and I don't think there are any (or many) connections under the house 
for those.  I think there is one electric line (to a kitchen island), 
but we're moving it, too....it will still be there, but we can at least 
plan for that--maybe put it in some conduit?  Right NOW there is unused 
ductwork down there that we're pulling out in order to do this, so it 
will actually make the crawlspace MORE accessible.

--Leslie

On 6/12/15 1:36 PM, Benjamin Pratt wrote:
> Lesley,
> the only experience I have with crawl spaces in further south than 
> you. But don't you need to leave plumbing and other utilities accessible?
> Ben
>
>
> b e n j a m i n p r a t t
>
> professor art+design
> the university of wisconsin stout
>
> On Fri, Jun 12, 2015 at 1:18 PM, Frank Tettemer <frank at livingsol.com 
> <mailto:frank at livingsol.com>> wrote:
>
>     Hi Leslie,
>
>     You may want to re-consider the idea of foaming the floor in a
>     crawl space. My concerns would be that the foam would act too well
>     as a vapour barrier, and you may have moisture/mildew problems
>     down the road in the crawl space. I AM in Canada, so your
>     geographic climate might create different problems than here.
>
>     I always design any neccessary crawl spaces as a definite part of
>     the conditioned space of the home. That means insulating the walls
>     and the floor of the crawl space, and leaving the floor as a
>     vapour-open plane, as well as including the crawl space in the
>     heating design. This avoids condensation trouble, by keeping the
>     air warm and dry.
>
>     Frank
>
>     Frank Tettemer
>     Living Sol ~ Building and Design
>     www.livingsol.com <http://www.livingsol.com>
>     613 756 3884 <tel:613%20756%203884>
>
>
>
>     On 12/06/2015 2:02 PM, Leslie Moyer wrote:
>
>         I am in NE Oklahoma.  I'm in the process of getting estimates
>         for crawlspace insulation in the floor joists--closed cell
>         foam.  My crawl space is dry now that we've fixed some
>         plumbing problems, but I'm having some cupping issues with
>         some wood flooring and part of the fiberglass batts that were
>         originally in the house when we bought it were taken out over
>         time for this and that. Anyway--closed cell foam seems to be
>         the best solution.
>
>         The first guy who came this morning wants to quote me 1.5"
>         foam, though said he would quote 2" if that's what I really
>         want, saying that would be enough for "Canada".  I understand
>         about the benefits of air sealing, but I was still thinking I
>         would need more inches of foam according to what I've read on
>         R-value & this area.  Thoughts?
>
>         -- 
>         *Leslie Moyer*
>
>
>
>         _______________________________________________
>         Greenbuilding mailing list
>         to Send a Message to the list, use the email address
>         Greenbuilding at bioenergylists.org
>         <mailto:Greenbuilding at bioenergylists.org>
>
>         to UNSUBSCRIBE or Change your List Settings use the web page
>         http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org
>
>
>     -- 
>
>
>     _______________________________________________
>     Greenbuilding mailing list
>     to Send a Message to the list, use the email address
>     Greenbuilding at bioenergylists.org
>     <mailto:Greenbuilding at bioenergylists.org>
>
>     to UNSUBSCRIBE or Change your List Settings use the web page
>     http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org
>
>
>
>
> _______________________________________________
> Greenbuilding mailing list
> to Send a Message to the list, use the email address
> Greenbuilding at bioenergylists.org
>
> to UNSUBSCRIBE or Change your List Settings use the web page
> http://lists.bioenergylists.org/mailman/listinfo/greenbuilding_lists.bioenergylists.org


-- 
*Leslie Moyer*
Email: unschooler at lrec.org <mailto:unschooler at lrec.org>
Phone: (918) 772-6150
Cell: (918) 633-8820

Sustainable Tahlequah
Web: SustainableTahlequah.org <http://www.SustainableTahlequah.org/>
Discussion List: groups.yahoo.com/group/SustainableTahlequah 
<http://groups.yahoo.com/group/SustainableTahlequah>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/greenbuilding_lists.bioenergylists.org/attachments/20150612/6df1cfc0/attachment.html>