
17
ENGLISH
Kuva. 7
Fig. 7
A B C
Air Ventilation
To have a soothing sauna, there should be a proper mixing of hot and cold air
inside the sauna room. Another reason for ventilation is to draw air around the
heater and move the heat to the farthest part of the sauna.The positioning of the
inlet and outlet vents may vary depending on the design of the sauna room or
preference of the owner. Nordic spruce wood is recommended for the walls and
ceiling inside the sauna.
The inlet vent may be installed on the wall directly below the heater (Fig. 7a).When
using the mechanical ventilation,the inlet vent may be placed at least 60 cm above
the heater (Fig 7b) or on the ceiling above the heater (Fig.7c).Through these
positions,the heavy cold air that is blown into the sauna is mixed with the light hot
air from the heater, bringing fresh air for the bathers to breathe.
The inlet and the outlet vent must have a diameter of 10cm.
The outlet vent should be placed diagonally opposite to the inlet. It is
recommended that the outlet vent be placed under the platform in a sauna as far
as possible from the fresh air vent. It may be installed near the floor, or led outside
through a pipe from the floor going to a vent to the sauna ceiling,or under the
door (to the washroom).In this case, the sill slot must be at least 5 cm and it is
recommended that there is mechanical ventilation in the washroom.The size of
the exhaust should be twice that of the inlet.
Insulation
The sauna must have proper insulation on the walls, ceiling and door. One square meter
(m²) of uninsulated surface increases the cubic volume by approximately 1,2m³ when
determining the power requirement of the heater. Refer to Fig.5.
Ensure that moisture proofing is appropriate in sauna room.The purpose of this is to
prevent spreading of moisture to the other rooms or wall structure. Moisture proofing must
be placed between heating insulation and panel.Nordic spruce wood is recommended for
the walls and ceiling inside the sauna.
Thermal and moisture proofing need to be installed according to the following order from
outside to inside.
The recommended minimum thickness of the thermal insulation in the walls is 50 mm
and in the ceiling 100 mm.
It is possible to use carton- or aluminum foil laminate as a vapor barrier, which is
affixed over the insulation aluminum foil inwards.
Leave at least 20 mm air slot between vapor barrier and inside panel
To prevent gathering of the moisture behind the panel, leave the slot between wall
panel and ceiling.
1.
2.
3.
4.