EN 1015-19:1998
(Main)Methods of test for mortar for masonry - Part 19: Determination of water vapour permeability of hardened rendering and plastering mortars
General Information
- Abstract
This European Standard specifies a method for determining the steady state water vapour permeability of rendering and plastering mortars in accordance with prEN 998-1 at the upper and lower part of the hygroscopic range. The test method is applicable to mortars from which disc shaped specimens of uniform thickness between 10 mm and 30 mm can be made.
- Status
- Published
- Publication Date
- 22-Sep-1998
- Technical Committee
- CEN/TC 125 - Masonry
- Drafting Committee
- CEN/TC 125/WG 4 - Test methods
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 11-Mar-2026
- Completion Date
- 17-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 1015-19:1998 is a CEN test method that specifies a procedure for determining the steady-state water vapour permeability of hardened rendering and plastering mortars. The method is referenced to prEN 998-1 and is intended to assess mortar performance at the upper and lower parts of the hygroscopic range. It applies to mortars from which disc-shaped specimens of uniform thickness between 10 mm and 30 mm can be prepared.
Understanding water vapour permeability is critical for hygrothermal performance, moisture transport, and long-term durability of masonry finishes. This standard provides a repeatable approach for laboratory comparison and quality control of rendering and plastering mortars.
Key Topics
- Scope and applicability: Test applies to hardened rendering and plastering mortars suitable for making disc specimens 10–30 mm thick.
- Steady-state measurement: Focuses on establishing a steady-state vapour flow to characterise permeability rather than transient behavior.
- Hygroscopic range: Addresses measurements at both upper and lower parts of the hygroscopic range to reflect realistic moisture sorption conditions.
- Reference to prEN 998-1: Aligns results with requirements and classifications used in mortar specification standards.
Applications
The standard supports a range of practical uses in construction materials testing and specification:
- Material selection: Compare vapour permeability of rendering and plastering mortars to choose compatible systems with existing substrates and finishes.
- Hygrothermal design: Inform moisture transport models and help prevent condensation, salt migration, and freeze–thaw damage in masonry assemblies.
- Quality control: Provide a laboratory method for manufacturers and test laboratories to verify product consistency and compliance with European requirements.
- Durability assessment: Use permeability data alongside sorption and mechanical properties to evaluate long-term performance of render and plaster systems.
Related Standards
- prEN 998-1: Performance specifications and categories for mortar for masonry; EN 1015-19 supports classification and compliance testing.
- Other EN 1015 series methods: EN 1015 documents cover a range of mortar test methods (consistency, strength, water retention, etc.) that complement permeability testing.
Practical value
EN 1015-19:1998 provides a standardised laboratory procedure for generating comparable water vapour permeability data for rendering and plastering mortars. By using uniform disc specimens (10–30 mm thickness) and testing at defined points in the hygroscopic range, practitioners obtain actionable information for selecting mortars, specifying compatible building systems, and supporting hygrothermal assessments.
Keywords: EN 1015-19:1998, water vapour permeability, rendering mortars, plastering mortars, steady-state, hygroscopic range, prEN 998-1, disc specimens, masonry mortar.
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Referred By
EN 998-1:2016 - Specification for mortar for masonry - Part 1: Rendering and plastering mortar - Effective Date
- 28-Jan-2026
- Referred By
EN 998-1:2010 - Specification for mortar for masonry - Part 1: Rendering and plastering mortar - Effective Date
- 28-Jan-2026
- Effective Date
- 22-Dec-2008
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.
Sponsored listings
Frequently Asked Questions
EN 1015-19:1998 is a standard published by the European Committee for Standardization (CEN). Its full title is "Methods of test for mortar for masonry - Part 19: Determination of water vapour permeability of hardened rendering and plastering mortars". This standard covers: This European Standard specifies a method for determining the steady state water vapour permeability of rendering and plastering mortars in accordance with prEN 998-1 at the upper and lower part of the hygroscopic range. The test method is applicable to mortars from which disc shaped specimens of uniform thickness between 10 mm and 30 mm can be made.
This European Standard specifies a method for determining the steady state water vapour permeability of rendering and plastering mortars in accordance with prEN 998-1 at the upper and lower part of the hygroscopic range. The test method is applicable to mortars from which disc shaped specimens of uniform thickness between 10 mm and 30 mm can be made.
EN 1015-19:1998 is classified under the following ICS (International Classification for Standards) categories: 91.100.10 - Cement. Gypsum. Lime. Mortar. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 1015-19:1998 has the following relationships with other standards: It is inter standard links to EN 1015-2:1998, EN 1015-11:2019, EN 1015-3:1999, EN 998-1:2016, EN 998-1:2010, EN 1015-19:1998/A1:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 1015-19:1998 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC; Standardization Mandates: M/116. 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 1015-19:1998 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.Metode preskušanja zidarskih malt - 19. del: Ugotavljanje prepustnosti grobega in finega ometa za vodno paroPrüfverfahren für Mörtel für Mauerwerk - Teil 19: Bestimmung der Wasserdampfdurchlässigkeit von Festmörteln aus PutzmörtelnMéthodes d'essai des mortiers pour maçonnerie - Partie 19: Détermination de la perméabilité a la vapeur d'eau des mortiers d'enduits durcisMethods of test for mortar for mas
...