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Build Your Own Sauna or Sweatlodge
©1997 Mikkel Aaland All Rights Reserved

Sweat, the book, included 50 pages of detailed information on how to
build and use your own Finnish Sauna, American Indian sweatlodge,
and private sweat bathing cubicle. Unfortunately the book is out
of print. However, I've reprinted this Build Your Own section
and you can order the reprint by contacting me directly. The cost
is $20, plus $3 shipping and handling. (Outside of the US shipping
and handling is more.) Either email me for further information or send a check to:
Cyberbohemia
attention: Mikkel Aaland
539 Greenwich Street
San Francisco, CA 94133
An excerpt from the
How to Build Section in Sweat
COPYRIGHT 1997 MIKKEL AALAND:
The Sauna
Whether to use an electric, gas, or wood burning stove is the
first decision in sauna building. Geographic location may influence
your choice. If you live in the country where firewood is plentiful
and fires have minimum of environmental impact, the wood burning
stove is the best performer and must be considered first choice.
Electric or gas stoves hardly match the pleasing aroma and smoothness
of the wood stove. But in cities, electric and gas heated saunas
are the most practical. No preparation like cutting and carrying
wood and priming the fire is needed; they are easy to clean and
leave no ashes. Although electric stoves outsell gas stoves by
far, gas is three times cheaper than electricity in most parts
of the country.
Local building codes may also determine the type of sauna you
build; for example, ordinances, which vary from community to community,
may restrict the use of wood burning stoves. Some times they require
specific types of stoves, fire insulation, flues and chimneys.
But generally, since most saunas are not used as habitual rooms,
building regulations are minimal.
After you have chosen a stove begin planning for the following:
Size of the sweat room where the heater will be placed. Size depends
on the number of bathers, the capacity of stove and bench arrangement.
Specific dimensions are discussed later.
A provision for washing. A separate washing room is preferred,
but space or budget limitations may necessitate washing inside
the sweat room (a common practice in Finnish countryside saunas.)
In either case, plan a means of producing hot water.
A dressing/relaxing room or some protection against the elements.
This can be a simple placement of wind breakers or even an open
porch adjoining the sweat room.
A clean, simple design using wood. This warm, friendly material
inspires quiet socializing, meditation and a retreat from the
rigors of the day.
Location. Since a place to cool the body after a session in the
sweat room is needed, the ideal place for a sauna is near a lake,
river or an ocean. However, a swimming pool or a simple shower
will serve well. Be considerate of your neighbors. Locate your
cooling area (where you don't want to be hampered by clothes)
with discretion.
Orientation. Know the course of the sun and moon and plan your
windows, doors and porches to catch their light. This will beautifully
enhance the mood of the sauna.
Here are a few Finnish words which apply to the sauna and I use
throughout the text. They are easy to learn, at least as easy
as cappuccino.
Kiuas (ke-wus)-sauna's stove or heater.
Loyly (lou-lu)-super-heated vapor that hisses off hot sauna rocks.
Vihta (veh-ta)-a bunch of broad leafed twigs for flagellation.
Sauna (sow-na)-now part of the English language. Often pronounced
saw-na in America.
KIUAS
A perfect sauna depends upon the proper rocks and a source of
heat that will make them red hot.
The kiuas is the sauna's heart.
A good kiuas, be it electric, gas or woodburning, will pour heat
evenly all through the sweat room. If hot enough, water will explode
off the rocks and fill the room with short bursts of loyly and
create the right bathing humidity.
Since the beginning of this century, many types of kiuas have
been introduced, and all of them use rocks to store and radiate
heat.
ROCKS
Each heating of a sauna rock equals thousands of years of natural
erosion. only the strongest rocks can survive constant heating
and cooling, and even they will eventually crack and crumble.
When this occurs, they lose their capacity to hold heat and in
time they disintegrate and clog the kiuas.
The best sauna rocks are those least exposed to weather. Certain
quarried rocks are therefore the strongest. Glassy rocks of high
quartz or iron content are not recommended. Iron is a fast conductor
of heat and when water is poured on, it becomes trapped in a shell
of vapor and tends to form beads. As the beads slide of the rock
a weak loyly is produced. obviously, rocks that produce poisonous
gases or offensive odors should not be used.
One of the best sauna rocks is peridotite, a quarried Finnish
rock that kiuas manufacturers ship across the world. Certain North
American rocks work as well. Freshly quarried basalt, black and
fine grained, from the Cascade and Sierra ranges, is excellent.
So is hornblende, found in many parts of this continent. It's
a textured rock which has been re-crystalized at a high temperature
making it ideal for the sauna. Locations of these types of rocks
can be found on geological surveying maps available from any Bureau
of Mines or through the Government Printing office in Washington,
D.C.
TESTING THE ROCKS: Exploding rocks are dangerous. Perform a simple
test to guarantee their safety. Thoroughly heat a sample for two
hours or more. Drop it into a pail of cold water, then look for
cracks. When the rock is cool, test it further by hitting it with
a hammer or against another rock. If the rock cracks or makes
a soft grinding sound when rubbed against another rock, discard
it and find another source. If it survives you have a safe sauna
rock. A more elaborate test can be made by your local metallurgical
laboratory. It costs a few dollars.
THE AMOUNT AND SIZE OF THE SAUNA ROCKS: The best sauna rocks are
the size of large potatoes. With sufficient heat replenishment,
the amount of rocks can be as little as 25-35 kilos (55-75 pounds).
Heat storage kiuas, which are only heated once, need at least
120 kilos (264 pounds) of rocks. A savusauna takes anywhere from
250-500 kilos (600-ll00 pounds) of rock depending on the size
of the room.
Too large or too many rocks take an unnecessary amount of time
to heat. Too small or too few rocks will cause the sauna to cool
after a few splashes of water. Rocks, in order to heat properly,
must not be packed either too tightly or too loosely.
HOW HOT SHOULD THE ROCKS BE? 5OO-800 degrees C (950-1500 degrees
F). Wood burning kiuas often heat rocks until they turn brilliant
red. It's not necessary to measure their temperature. If water
thrown on the rocks makes a sharp crack, like the opening of a
carbonated drink, and one or two seconds later an invisible loyly
fills the room, they are hot enough. Water tossed on tepid rocks
will bubble slowly and turn the sauna into a steamy bath.
ORDER A REPRINT CONTAINING MORE HOW TO BUILD INFORMATION
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