Wednesday, July 4, 2007

[papercreters] Thermal mass/insulation --was-- Re: Fibrous Cement - some photos

Spaceman has this one pegged.

The ideal thermal configuration is to have a high insulation layer
toward the outside of the wall and high thermal mass inside. The
more the merrier in each case. Distributing thermal mass THROUGHOUT
an insulation layer degrades the performance of each.

One caveat is the importance of keeping the interior humidity down in
warm/humid climates. If one cools a large thermal mass in a high
humidity environment, you're asking for damp sweaty walls and
floors. This is an invitation for mold and other water damage.

In high humidity climates it would be appropriate to invest in a
reliable dehumidifier.

Since we don't live in an ideal world, some compromises are
reasonable. When the insulation material is also serving as a
structural support, then adding sand to it can make more sense.
Sacrificing thermal performance to gain structural strength is the
trade-off.

--- In papercreters@yahoogroups.com, "Robert & Connie"
<babalubird@...> wrote:
>
> I wondered about the thermal mass-insulation thing I've read about
> myself. Seems a dichotomy of therms.
>
> What about the pumice Judith uses? Because it is lightweight in
> nature, and she says adds "volume," would the pumice add to the
> insulative nature or thermal-mass or heat transfer.
>
> In TX, our summer nights and days can be almost equally hot, so we
want
> insulation and more insulation.
>
> Connie
>

__._,_.___
Recent Activity
Visit Your Group
SPONSORED LINKS
Yahoo! Groups

Moderator Central

An online resource

for moderators.

Sell Online

Start selling with

our award-winning

e-commerce tools.

Yoga Groups

Exchange insights

with members of

the yoga community.

.

__,_._,___