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Re: [Strawbale]RE: strawmud sauna



Hi,

Just a brainstorm ....

Wouldn't it be a good idea to build an empty "strawbale box", and inside this box you build another box in wood (like a normal sauna). Between these boxes you keep an open space for ventilation. Just like a hollow wall. Then you have the very good insulation properties of the outside box, and the good moisture properties of the inside box.
In the hollow wall you can possibly make a ventilation system.


Ben Albu


On Fri, 23 Jul 2004 21:59:50 +0200, <nasenzwerg@gmx...> wrote:

Hi balers,

I do not quite agree with Rene.
1. thermal mass can be reduced by applying only a thin mud-layer by
spraying a slurry. This could be covered with wood, the way, saunas
usually 	look like.
2. principally the bigger problem is the one with the moisture of
course. But you use a sauna only a few ours a day, then you can take
care about good ventilation.

Due to the moisture-problem, especially as it is run mostly during
cold periods (large temperature gradient, a lot of moisture, thus the
threat of condensation), building a SB sauna really is a demanding
task. And if it works (and I think it should), it would be a
impressive example to argument with, in discussions with critics.

Good luck, and keep us informed

peter schladt

On 22 Jul 2004 at 22:11, Rene Dalmeijer wrote:

Rikkert,

I don't want to dampen your spirit but SB is not a very suitable material
for a sauna for the following reason. The earthplaster walls have a
relatively high thermal capacity ie they require a lot of heat to warm up.
This means to have a comfortable surrounding you have to put in a lot of
heat for a long time before you can use your sauna. If the Sauna is used
continuously it is a different matter but I don't suppose this is your
intention. Besides this very practical reason there is the other of
moisture in bales ie a sauna is not a good environment for SB but if only used for a short time and then well ventilataed this might be not so much
of a problem.

To get around the first issue the high mass of the plaster I suggest
putting a low mass surface in front of the interior plaster Like a very
light corrugated transparent material (kunstof golfplaat) You can wrap this
around the whole area maybe not even completely from wall to ceiling to
allow good ventilation. Next I would make ventilation channels through the
SB walls near the floor that you could open after use. Obviously the
reciprocal roof will have a vented opening at the top. When the sauna is in
use you close the vents as required.

Don't worry too much about the hay. When using the hay though make sure it
is dry and stored properly before building. I suggest dipping them a la
French dip before use allow them to dry some what before stacking makes a
big difference. A good dry start of life is essential specifically with
hay. Some of the oldest SB buildings were actually built using hay and not
straw.

As I understand from your description you want to build low cost so keep in
mind that it is an experiment and be prepared to accept failure. In
practice though many old buildings were such experiments and they outlived
there initial builders.

At 07:36 AM 7/22/04, you wrote:
>Hi people i wil give a workshop whith building a expirimental strawbale
>mudsauna .
>
> >
> >
> >  So what it say it is a expiriment so i wonder of some people have
> > already some expiriments and maybe tips. I was wondering of it is already
> >  done .
> >
> > It would be a round sauna one caretire foundation whit recipro roof . > > I want try loadbearing on edge , somebody try this before sugestion ?
> >  And we can get for free hay is this posible to use?
> >
> > when people want more info about the workhop email: rikkertx@ilse...


Rene Dalmeijer


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