kSIST FprEN 18164:2025

SLOVENSKI STANDARD
oSIST prEN 18164:2025
01-april-2025
Wellness objekti za javno uporabo - Klimatizirani prostori - Zahteve
Wellness facilities for public use - Climated rooms - Requirements
Wellness-Einrichtungen für die öffentliche Nutzung - Klimatisierte Räume -
Anforderungen
Installations de bien-être à usage public - Salles climatisées - Exigences
Ta slovenski standard je istoveten z: prEN 18164
ICS:
97.220.10 Športni objekti Sports facilities
oSIST prEN 18164:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 18164:2025
oSIST prEN 18164:2025
DRAFT
EUROPEAN STANDARD
prEN 18164
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2025
ICS 97.220.10
English Version
Wellness facilities for public use - Climated rooms -
Requirements
Installations de bien-être à usage public - Salles Wellness-Einrichtungen für die öffentliche Nutzung -
climatisées - Exigences Klimatisierte Räume - Anforderungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 136.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 18164:2025 E
worldwide for CEN national Members.

oSIST prEN 18164:2025
prEN 18164:2025 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Classification of climated rooms . 8
4.1 Sauna room . 8
4.2 Warm-air room . 8
4.3 Steam room . 8
4.4 Soft steam room . 8
5 Construction requirements . 9
5.1 General. 9
5.2 Floor . 9
5.2.1 General. 9
5.2.2 Finishes to wet areas . 9
5.2.3 Slip resistance . 9
5.2.4 Accessible pathways, floors . 10
5.3 Wall construction . 10
5.3.1 General. 10
5.3.2 Sauna rooms . 10
5.3.3 Warm-air rooms . 10
5.3.4 Steam rooms in element construction . 11
5.3.5 Soft steam rooms in element construction . 11
5.4 Ceiling. 11
5.5 Doors and windows . 11
5.6 Interior . 11
5.6.1 General. 11
5.6.2 Interior for sauna and warm-air rooms in timber construction . 12
5.6.3 Interior fittings for steam and warm air rooms in mineral construction . 12
6 Ventilation . 12
7 Heating and temperature control . 12
7.1 General. 12
7.2 Heating and temperature control for sauna rooms and warm air rooms in timber
construction . 12
7.3 Heating and temperature control technology for steam rooms . 13
8 Steam and humidification technology, room drying, fragrance system . 13
8.1 Humidification technology, room drying, fragrance system for warm-air rooms . 13
8.1.1 Humidification technology . 13
8.1.2 Room drying for warm air rooms in timber constructions . 13
8.1.3 Room drying for warm air rooms in other constructions . 14
8.2 Brine and aroma technology, fragrance system . 14
8.3 Steam technology for steam rooms . 14
oSIST prEN 18164:2025
prEN 18164:2025 (E)
9 Light and lighting . 14
10 Safety . 14
10.1 Safety system for switching on and off heaters . 14
10.2 Emergency call system . 14
Bibliography . 15

oSIST prEN 18164:2025
prEN 18164:2025 (E)
European foreword
This document (prEN 18164:2025) has been prepared by Technical Committee CEN/TC 136 “Sports,
playground and other recreational facilities and equipment”, the secretariat of which is held by DIN
(Germany).
This document is currently submitted to CEN Enquiry.
oSIST prEN 18164:2025
prEN 18164:2025 (E)
Introduction
The objective with this document is to design climated rooms in such a way that they are safe and
promote health and well-being.
The electrotechnical aspects regarding the construction of climated rooms are important. This document
does not cover those aspects as well as infrared heaters. CENELEC has European standards for
electrotechnical aspects and some are listed in the Bibliography.
oSIST prEN 18164:2025
prEN 18164:2025 (E)
1 Scope
This document specifies requirements for the design and construction of climated rooms and any
associated equipment for public use.
This document does not apply to electrotechnical aspects of climated rooms.
NOTE A climated room is defined as an indoor air bath with heated air with a temperature of at least 30 °C,
see 3.9.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 13451-1, Swimming pool equipment — Part 1: General safety requirements and test methods for
equipment installed in pools for public use
EN 16165, Determination of slip resistance of pedestrian surfaces — Methods of evaluation
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
sauna room
cabin with a temperature of 80 °C to 105 °C and a relative humidity of < 10 % with internal surfaces
covered with timber
3.2
automatic infusion
technical equipment that carries out an infusion at regular intervals
3.3
capacity
maximum number of persons, specified by the producer, allowed to occupy the room simultaneously
Note 1 to entry: Where the room is equipped with benches, it is assumed that the calculation of the capacity takes
into consideration a minimum width per person, considering the possibility to sit only, or to sit or lie down.
3.4
construction
assembled frame comprising posts and beams
3.5
heater
appliance that heats climated rooms
[SOURCE: EN 60335-2-53:2011, 3.101]
oSIST prEN 18164:2025
prEN 18164:2025 (E)
3.6
humidifier
equipment with a control unit that regulates room humidity or temperature, or both
3.7
sauna infusion
action of pouring water or scented water mixture onto the hot stones of a heater to increase the humidity
in the room for a short time
3.8
plank
sawn timber
3.9
climated room
indoor air bath with heated air with a temperature of at least 30 °C
3.10
air replacement rate
specification in h of how often the air is replaced in the climated room
3.11
convection
transfer of heat as a result of the movement of tiny particles through gas or fluid
3.12
fog
cloud of fine water drops in air saturated with moisture
3.13
heat conduction
transfer of heat through contact
3.14
protection temperature limiter
technical equipment that switches off a heater after a specified maximum temperature has been reached
3.15
relative humidity
ratio of water vapor partial pressure to saturated vapor pressure at a given temperature
[SOURCE: ISO 23737:2021, 3.6]
3.16
solid construction
construction using mineral building materials, without any plaster parts, with ceramic or natural stone
coatings
3.17
steam
temperatured high moisture
oSIST prEN 18164:2025
prEN 18164:2025 (E)
3.18
steam generator
equipment producing steam
3.19
thermal insulation
construction materials with low thermal transmittance
3.20
thermal transmittance
U-value
measured energy or heat-flow loss per hour through 1 m of wall space when the temperature on the
inside is 1 K higher than on the outside
4 Classification of climated rooms
4.1 Sauna room
The sauna room is made of timber with ascending stepped benches and with a room climate of
80 °C to 105 °C measured 1 m above the top bench, which is set by a stone-filled heater.
The climate has a low humidity, which can be briefly increased by sauna infusions. It can be executed by
hand or automatic infusion.
The wooden surface shall be minimum 65 % of the walls and ceilings.
4.2 Warm-air room
The warm-air room may be constructed of any kind of material(s) or combination of materials, for
example timber, ceramic tiles or natural stone.
The warm-air room is equipped with single or multi-level seats, or loungers, as well as means of
generating steam or heat, or both.
The room climate has a temperature of 30 °C to 80 °C and a relative humidity of 35 % to 50 % measured
1 m above the highest seating.
NOTE To avoid health hazards, the balance of the combination of material, temperature and relative humidity
is essential.
4.3 Steam room
The steam room may be constructed of any kind of material(s) suitable to humid environment and with
a closed surface or combination of materials.
The steam room is equipped with benches as well as means of generating steam and heat. The room
climate has a temperature of 40 °C to 49 °C and saturated air humidity measured 1 m above the top bench
level.
4.4 Soft steam room
The soft steam room may be constructed of any kind of material(s) or combination of materials.
The soft steam room is equipped with benches as well as means of generating steam and heat. The room
climate has a temperature of 30 °C to 70 °C and a relative air humidity of 50 % to 100 % measured 1 m
above the top bench level.
NOTE To avoid health hazards, the balance of the combination of material, temperature and relative humidity
is essential.
oSIST prEN 18164:2025
prEN 18164:2025 (E)
5 Construction requirements
5.1 General
The interior surface of sauna rooms shall be built in layered or solid timber construction. The walls and
ceiling of the sauna rooms shall be made of suitable timber. The remaining surface of the walls and ceiling
can be made of materials which are not affected by temperature or humidity.
The surface of the timber shall not be treated with chemical substances which can cause health hazard.
The int
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