EN 12154:1999
(Main)Curtain walling - Watertightness - Performance requirements and classification
General Information
- Abstract
This standard defines the requirements and classification of watertightness performance of both fixed and openable parts of curtain walling under postive static air pressure. NOTE: This standard applies to curtain walling in accordance with WI 00033238.
- Status
- Published
- Publication Date
- 07-Dec-1999
- Withdrawal Date
- 29-Jun-2000
- Technical Committee
- CEN/TC 33 - Doors, windows, shutters and building hardware
- Drafting Committee
- CEN/TC 33/WG 6 - Curtain walling
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 10-Jan-2023
- Completion Date
- 23-Sep-2026
- Directive
- Harmonized Standard305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
Not Harmonized89/106/EEC - Construction products
Overview
EN 12154:1999 - Curtain walling - Watertightness - Performance requirements and classification is a CEN standard that defines how the watertightness performance of curtain walling is specified and classified. It covers both fixed and openable parts of curtain façades when subjected to positive static air pressure. The standard was adopted by Slovenia as SIST EN 12154:2001.
Key topics and technical requirements
- Scope and applicability: Applies to curtain walling systems in accordance with WI 00033238, covering components and assemblies used in external façades.
- Watertightness performance: Establishes performance requirements and a classification system for resistance to water penetration under defined positive static air pressure conditions.
- Fixed vs openable parts: Differentiates requirements for non‑operable (fixed) elements and operable elements (e.g., vents, windows integrated in the curtain wall).
- Classification framework: Provides a structured approach to rank systems by watertightness performance (classification bands or levels), enabling comparison between products.
- Testing conditions: Specifies the use of controlled positive static air pressure during assessment (note: refer to the standard text for detailed test setups and thresholds).
- Documentation and conformity: Requires manufacturers and test laboratories to document results and classification to support specification and compliance.
Practical applications
- Façade design and specification: Architects and façade engineers use EN 12154 to specify minimum watertightness requirements for curtain wall systems in projects.
- Product selection and procurement: Clients and specifiers reference the classification to compare curtain wall products for performance and suitability.
- Factory and site quality control: Manufacturers use the standard to design products and verify production quality; installers use it to confirm installed performance.
- Testing and certification: Accredited test laboratories apply the standard’s criteria when issuing watertightness test reports and classification certificates.
- Regulatory and compliance checks: Building inspectors and compliance officers consult the classification to assess conformity with performance requirements.
Who uses this standard
- Façade and structural engineers
- Architects and building designers
- Curtain wall manufacturers and component suppliers
- Test laboratories and certification bodies
- Building owners, contractors, and specifiers
- Regulatory authorities and compliance consultants
Related standards
- EN 12154 is a CEN document and was adopted regionally (e.g., SIST EN 12154:2001 in Slovenia). For complete test methods, design details and complementary requirements, consult other CEN façade and window standards referenced within EN 12154 and national adaptations.
Keywords: EN 12154, curtain walling, watertightness, façade classification, positive static air pressure, performance requirements, SIST EN 12154.
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Get Certified
Connect with accredited certification bodies for this standard
DIBt (Deutsches Institut für Bautechnik)
German Institute for Building Technology.
DIN CERTCO
DIN Group product certification.
Aboma Certification B.V.
Specialized in construction, metal, and transport sectors.
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Frequently Asked Questions
EN 12154:1999 is a standard published by the European Committee for Standardization (CEN). Its full title is "Curtain walling - Watertightness - Performance requirements and classification". This standard covers: This standard defines the requirements and classification of watertightness performance of both fixed and openable parts of curtain walling under postive static air pressure. NOTE: This standard applies to curtain walling in accordance with WI 00033238.
This standard defines the requirements and classification of watertightness performance of both fixed and openable parts of curtain walling under postive static air pressure. NOTE: This standard applies to curtain walling in accordance with WI 00033238.
EN 12154:1999 is classified under the following ICS (International Classification for Standards) categories: 91.060.10 - Walls. Partitions. Facades. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 12154:1999 has the following relationships with other standards: It is inter standard links to EN 13830:2003, EN 12155:2000, EN 13830:2015, EN 13830:2015+A1:2020, EN 15859:2010. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 12154:1999 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
EN 12154:1999 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Obešene fasade - Neprepustnost za vodo - Zahteve in klasifikacijaVorhangfassaden - Schlagregendichtheit - Leistungsanforderungen und KlassifizierungFaçades rideaux - Etanchéité a l'eau - Exigences de performance et classificationCurtain walling - Watertightness - Performance require
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