Liquid applied water impermeable products for use beneath ceramic tiling bonded with adhesives - Essential characteristics and AVCP

This document applies to all liquid-applied water impermeable products, based on polymer modified cementitious mortars, dispersions and reaction resin coatings, used beneath ceramic tiling, for external tile installations on walls and floors and in swimming pools.
This document specifies the essential characteristics, the respective threshold levels and test methods for liquid-applied water impermeable products associated with tile adhesives.
This document specifies the assessment and verification of constancy of performance, of liquid-applied water impermeable products beneath ceramic tiling.
NOTE   This document does not contain recommendations for the design and installation of ceramic tiles and grouts in combination with water impermeable products.

Flüssig zu verarbeitende wasserundurchlässige Produkte im Verbund mit keramischen Fliesen und Plattenbelägen - Anforderungen, Prüfverfahren, Bewertung und Überprüfung der Leistungsbeständigkeit, Klassifizierung und Bezeichnung

Produits d'imperméabilisation appliqués en phase liquide utilisés sous carrelage collé - Caractéristiques essentielles et EVCP

Tekoče vgrajevani za vodo neprepustni izdelki za uporabo pod keramičnimi ploščicami, lepljenimi z lepili - Bistvene značilnosti in ocenjevanje ter preverjanje nespremenljivosti lastnosti (AVCP)

General Information

Status
Not Published
Public Enquiry End Date
19-Sep-2020
Technical Committee
Current Stage
4020 - Public enquire (PE) (Adopted Project)
Start Date
10-Aug-2020
Due Date
28-Dec-2020
Completion Date
13-Oct-2020

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SLOVENSKI STANDARD
oSIST prEN 14891:2020
01-september-2020
Tekoče vgrajevani za vodo neprepustni izdelki za uporabo pod keramičnimi

ploščicami, lepljenimi z lepili - Bistvene značilnosti in ocenjevanje ter preverjanje

nespremenljivosti lastnosti (AVCP)

Liquid applied water impermeable products for use beneath ceramic tiling bonded with

adhesives - Essential characteristics and AVCP

Flüssig zu verarbeitende wasserundurchlässige Produkte im Verbund mit keramischen

Fliesen und Plattenbelägen - Anforderungen, Prüfverfahren, Bewertung und
Überprüfung der Leistungsbeständigkeit, Klassifizierung und Bezeichnung

Produits d'imperméabilisation appliqués en phase liquide utilisés sous carrelage collé -

Caractéristiques essentielles et EVCP
Ta slovenski standard je istoveten z: prEN 14891
ICS:
91.100.23 Keramične ploščice Ceramic tiles
91.100.50 Veziva. Tesnilni materiali Binders. Sealing materials
oSIST prEN 14891:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 14891:2020
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oSIST prEN 14891:2020
DRAFT
EUROPEAN STANDARD
prEN 14891
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2020
ICS 91.100.23; 91.100.25; 91.100.50 Will supersede EN 14891:2017
English Version
Liquid applied water impermeable products for use
beneath ceramic tiling bonded with adhesives - Essential
characteristics and AVCP

Produits d'imperméabilisation appliqués en phase Flüssig zu verarbeitende wasserundurchlässige

liquide utilisés sous carrelage collé - Caractéristiques Produkte im Verbund mit keramischen Fliesen und

essentielles et EVCP Plattenbelägen - Anforderungen, Prüfverfahren,
Bewertung und Überprüfung der
Leistungsbeständigkeit, Klassifizierung und
Bezeichnung

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 67.

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, Turkey 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

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 14891:2020 E

worldwide for CEN national Members.
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oSIST prEN 14891:2020
prEN 14891:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 6

4 Essential characteristics ............................................................................................................................... 6

5 Testing, assessment and sampling methods ......................................................................................... 7

6 Assessment and verification of constancy of performance ............................................................. 7

6.1 General ................................................................................................................................................................ 7

6.2 Assessment of performance ........................................................................................................................ 7

6.2.1 General ................................................................................................................................................................ 7

6.2.2 Test samples, testing and compliance criteria ..................................................................................... 8

6.3 Verification of constancy of performance .............................................................................................. 9

6.3.1 Factory Production Control (FPC) ............................................................................................................. 9

Annex A (normative) Testing, assessment and sampling methods (AVCP) ........................................... 11

A.1 Sampling .......................................................................................................................................................... 11

A.2 Test conditions .............................................................................................................................................. 11

A.3 Test materials ................................................................................................................................................ 11

A.3.1 General ............................................................................................................................................................. 11

A.3.2 Ceramic tiles ................................................................................................................................................... 11

A.3.3 Test substrate ................................................................................................................................................ 11

A.3.3.1 Concrete slab ................................................................................................................................................. 11

A.3.3.2 Other substrates (optional) ...................................................................................................................... 11

A.3.4 Ceramic tile adhesive .................................................................................................................................. 12

A.3.5 Sodium hypochlorite ................................................................................................................................... 12

A.4 Apparatus ........................................................................................................................................................ 12

A.4.1 Weight (Mass) ................................................................................................................................................ 12

A.4.2 Pull head plates ............................................................................................................................................. 12

A.4.3 Machine for pull testing ............................................................................................................................. 12

A.4.4 Air-circulating oven ..................................................................................................................................... 12

A.4.5 Mould ................................................................................................................................................................ 12

A.4.6 Jig ....................................................................................................................................................................... 14

A.4.7 Equipment for permeability test ............................................................................................................ 15

A.4.8 Machine for tensile testing ....................................................................................................................... 16

A.5 Mixing of liquid-applied water impermeable products ................................................................. 16

A.6 Tensile adhesion tests ................................................................................................................................ 16

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oSIST prEN 14891:2020
prEN 1489:2020 (E)

A.6.1 Preparation of test pieces .......................................................................................................................... 16

A.6.2 Initial tensile adhesion strength ............................................................................................................. 17

A.6.3 Tensile adhesion strength after water contact .................................................................................. 17

A.6.4 Alternative method for tensile adhesion strength after water contact .................................... 17

A.6.5 Tensile adhesion strength after heat ageing ...................................................................................... 18

A.6.6 Tensile adhesion strength after freeze–thaw cycle .......................................................................... 18

A.6.7 Tensile adhesion strength after contact with chlorinated water ................................................ 18

A.6.8 Alternative method for tensile adhesion strength after contact with chlorinated

water ................................................................................................................................................................. 19

A.6.9 Tensile adhesion strength after contact with lime water .............................................................. 19

A.6.10 Evaluation and expression of the results ............................................................................................. 19

A.7 Water impermeability ................................................................................................................................ 20

A.8 Crack bridging ability .................................................................................................................................. 22

A.8.1 General ............................................................................................................................................................. 22

A.8.2 Crack bridging ability under standard conditions ........................................................................... 23

A.8.3 Crack bridging ability at low temperature .......................................................................................... 23

A.9 Test report ...................................................................................................................................................... 23

Annex ZA (informative) Relationship of this European Standard with Regulation (EU)

No.305/2011 .................................................................................................................................................. 25

ZA.1 Scope and relevant characteristics ........................................................................................................ 25

ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) ...................... 26

ZA.3 Assignment of AVCP tasks ......................................................................................................................... 26

Bibliography ................................................................................................................................................................. 28

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oSIST prEN 14891:2020
prEN 14891:2020 (E)
European foreword

This document (prEN 14891:2020) has been prepared by Technical Committee CEN/TC 67 “Ceramic

tiles”, the secretariat of which is held by UNI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 14891:2017.

This document has been prepared under a mandate given to CEN by the European Commission and the

European Free Trade Association, and supports basic requirements for construction works of Regulation

No. 305/2011.

For relationship with this Regulation, see informative Annex ZA, which is an integral part of this

document.

The significant changes between this document and the previous edition are according to the

requirements of the CPR.
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oSIST prEN 14891:2020
prEN 1489:2020 (E)
1 Scope

This document applies to all liquid-applied water impermeable products, based on polymer modified

cementitious mortars, dispersions and reaction resin coatings, used beneath ceramic tiling, for external

tile installations on walls and floors and in swimming pools.

This document specifies the essential characteristics, the respective threshold levels and test methods

for liquid-applied water impermeable products associated with tile adhesives.

This document specifies the assessment and verification of constancy of performance, of liquid-applied

water impermeable products beneath ceramic tiling.

NOTE This document does not contain recommendations for the design and installation of ceramic tiles and

grouts in combination with water impermeable products.
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 196-1:2016, Methods of testing cement — Part 1: Determination of strength

EN 197-1:2011, Cement — Part 1: Composition, specifications and conformity criteria for common cements

EN 480-1:2014, Admixtures for concrete, mortar and grout — Test methods - Part 1: Reference concrete

and reference mortar for testing

EN 1008:2002, Mixing water for concrete — Specification for sampling, testing and assessing the suitability

of water, including water recovered from processes in the concrete industry, as mixing water for concrete

EN 1067:2005, Adhesives — Examination and preparation of samples for testing

prEN 12004-1:2020, Adhesives for ceramic tiles — Part 1: Essential characteristics assessment and

verification of constancy of performance
EN 12004-2:2017, Adhesives for ceramic tiles — Part 2: Test methods

EN 12390-2:2019, Testing hardened concrete — Part 2: Making and curing specimens for strength tests

EN 12620:2002+A1:2008, Aggregates for concrete

EN 14411:2016, Ceramic tiles — Definition, classification, characteristics, assessment and verification of

constancy of performance and marking
EN ISO 15605:2004, Adhesives — Sampling (ISO 15605:2000)
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oSIST prEN 14891:2020
prEN 14891:2020 (E)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
liquid-applied water impermeable product

single- or multicomponent waterproofing material applied in a uniform layer, beneath ceramic tiling

Note 1 to entry: The water impermeable layer can include a reinforcing cloth or mesh.

3.2
polymer modified cementitious liquid-applied water impermeable product

mixture of hydraulic binding agents, aggregates and organic additives that has only to be mixed with

water or liquid admixture just before use
3.3
dispersion liquid-applied water impermeable product

ready for use mixture of organic binding agent(s) in the form of an aqueous polymer dispersion, organic

additives and mineral fillers
3.4
reaction resin liquid-applied water impermeable product

one or more component mixture of synthetic resin, mineral fillers and organic additives in which

hardening occurs by chemical reaction
3.5
crack bridging ability

ability of the hardened waterproofing material to withstand propagation of the cracks without

deterioration
3.6
primer

liquid coating applied to the surface, prior to the application of a liquid product, to improve adhesion and

durability of the bond
4 Essential characteristics

The assessment of the essential characteristics of the liquid-applied water impermeable products shall

be carried out in accordance with Table 1.

The amount of water and/or liquid admixture required for preparing the cementitious liquid-applied

water impermeable products shall be the same for all tests.
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oSIST prEN 14891:2020
prEN 1489:2020 (E)
Table 1 — Essential characteristics – Requirements (CM – DM – RM)
Characteristic Threshold value Test method
Initial tensile adhesion strength ≥ 0,5 N/mm A.6.2
Tensile adhesion strength after water contact ≥ 0,5 N/mm A.6.3 or A.6.4
Tensile adhesion strength after heat ageing ≥ 0,5 N/mm A.6.5
Tensile adhesion strength after freeze–thaw cycles ≥ 0,5 N/mm A.6.6
Tensile adhesion strength after contact with lime water ≥ 0,5 N/mm A.6.9
No penetration
Waterproofing A.7
and ≤ 20 g weight gain
Crack bridging ability under standard conditions or A.8.2
Crack bridging ability at low temperature (- 5 °C) or ≥ 0,75 mm A.8.3
Crack bridging ability at very low temperature (- 20 °C) A.8.3
5 Testing, assessment and sampling methods

Testing and assessment methods and requirements for sampling shall be as set out in A.1 to A.8.

6 Assessment and verification of constancy of performance
6.1 General

The technical details necessary for the implementation of the system of assessment and verification of

constancy of performance comprise provisions with regards to:

— the assessment of the performance of the construction product, which may be carried out on the

basis of testing (including sampling) of the product and
— the applicable factory production control.
6.2 Assessment of performance
6.2.1 General

When the intention is to declare any performance related to characteristics included in Annex ZA of this

standard this shall be carried out on the basis of testing (including sampling) of the product, in accordance

with Clause Characteristics'.

Assessment previously performed in accordance with the provisions of this standard, may be considered,

provided that this assessment was performed to the same or a more rigorous assessment method, under

the same AVCP system on the same product or products of similar design, construction and functionality,

such that the results are applicable to the product in question.

For the purposes of assessment, the products may be grouped into families, where it is considered that

the results for one or more characteristics from any one product within the family are representative for

that same characteristic for all products within that same family.
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oSIST prEN 14891:2020
prEN 14891:2020 (E)
In addition, the determination of the product performance shall be:

— carried out for all characteristics included in the standard for which it is intended to declare the

performance
— on first application of this standard, or

— at the beginning of the production of a new or modified liquid-applied water impermeable

product, unless a member of the same product family, or

— at the beginning of a new or modified method of production, where the modification may affect

the stated properties;

— repeated for the characteristic(s) in question, whenever a change occurs in the liquid-applied water

impermeable product design, in the raw material(s) or in the supplier of the components, and/or in

the method of production (subject to the definition of a family), which may affect significantly the

performance in relation to one or more of the characteristics.

Where components are used whose performance in relation to their characteristics has already been

determined on the basis of assessment methods of other harmonized technical specifications and those

components bear CE marking in accordance with those harmonized technical specifications, these

performances do not need to be re-assessed, if the intended use and the assessment methods of this

standard correspond to previously used. The specifications of these components shall be documented.

6.2.2 Test samples, testing and compliance criteria

The samples of the liquid-applied water impermeable product to be tested/assessed shall be in

accordance with Table 2.
Table 2 — Number of samples to be tested and assessment criteria
Assessment No. of Assessment
Characteristic Clause
method samples criteria
Clause 4,
Initial tensile adhesion strength 4 A.6 1
Table 1
Tensile adhesion strength after water Clause 4,
4 A.6 1
contact Table 1
Tensile adhesion strength after heat Clause 4,
4 A.6 1
ageing Table 1
Tensile adhesion strength after freeze– Clause 4,
4 A.6 1
thaw cycles Table 1
Tensile adhesion strength after contact Clause 4,
4 A.6 1
with lime water Table 1
Clause 4,
Waterproofing 4 A.7 1
Table 1
Crack-bridging ability (under standard Clause 4,
4 A.8 1
conditions or at low temperature) Table 1
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oSIST prEN 14891:2020
prEN 1489:2020 (E)
6.3 Verification of constancy of performance
6.3.1 Factory Production Control (FPC)
6.3.1.1 General

An FPC system shall be established, documented, operated and maintained to ensure that the products

placed on the market comply with the declared performance in relation to the essential characteristics.

The FPC system shall consist of procedures, regular inspections and tests and/or assessments and the

use of the results to control raw and other incoming materials or components, equipment, the production

process and the product.

All the elements and provisions shall be documented in a systematic manner in the form of written

policies and procedures.

The responsibility, authority and the relationship between personnel that manages, performs or verifies

work affecting constancy of the performance of the product, shall be defined.

The qualification and competence (e.g. on the basis of education, training, skills, or experience) of

personnel performing tasks affecting the assessment and verification of constancy of performance of the

product shall be recorded.

Documents defining the factory production control system shall be drawn up and kept up- to-date.

Documentation and procedures should be appropriate to the product and production process. The FPC

system should achieve an appropriate level of confidence in the constancy of performance of the product.

This involves:

a) the preparation of documented procedures and instructions relating to factory production control

operations, in accordance with the technical specification to which reference is made;

b) the effective implementation of these procedures and instructions;
c) the recording of these operations and their results;

d) the use of these results to correct any deviations, correct the effects of such deviations, treat any

resulting instances of non-constancy and, if necessary, revise the FPC system to rectify the cause of

non-constancy of performance.
6.3.1.2 Equipment
6.3.1.2.1 Testing

All weighing, measuring and testing equipment shall be checked, calibrated and regularly inspected

according to documented procedures, frequencies and criteria.
6.3.1.2.2 Production

All equipment used in the production process shall be regularly inspected and maintained to ensure use,

wear or failure does not cause inconsistency in the production process. Inspections and maintenance

shall be carried out and recorded in accordance with written procedures and the records retained for the

period defined in the FPC procedures.
6.3.1.3 Raw materials and components

The specifications of all incoming raw materials and components shall be documented, as shall the

inspection scheme for ensuring their compliance.
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oSIST prEN 14891:2020
prEN 14891:2020 (E)
6.3.1.4 Traceability and marking

Individual product batches shall be identifiable and traceable with regard to their place of production.

Written procedures ensuring that processes related to affixing traceability codes and/or markings are

inspected regularly shall be maintained.
6.3.1.5 Product testing and evaluation

Procedures to ensure that the performance in relation to the declared characteristics are maintained shall

be established. The characteristics, and the means of control, are specified in Table 3.

Table 3 — Production control: test methods and minimum FPC frequency
Minimum
Test
Characteristic FPC
method
frequency
Initial tensile adhesion strength A.6.2 B
A.6.3 or
Tensile adhesion strength after water contact B
A.6.4
Tensile adhesion strength after heat ageing A.6.5 B
Tensile adhesion strength after freeze–thaw cycles A.6.6 B
Tensile adhesion strength after contact with lime water A.6.9 B
Waterproofing A.7 A
A.8.2 or
Crack-bridging ability (under standard conditions or at low temperature) B
A.8.3
A: means at six month interval

B: means one test per year for production below 500 tonnes/y and two tests per year for production

over 500 tonnes/y
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oSIST prEN 14891:2020
prEN 1489:2020 (E)
Annex A
(normative)
Testing, assessment and sampling methods (AVCP)
A.1 Sampling

Take a sample of at least 2 kg of the product to be tested in accordance with EN ISO 15605:2004 and

EN 1067:2005.
A.2 Test conditions

Standard conditions shall be (23 ± 2) °C and (50 ± 5) % Relative Humidity and the speed of air in the

working area less than 0,2 m/s.

When the test specimens have to be conditioned according to the test method, the tolerances in the time

of conditioning for all test specimens shall be as follows:
Conditioning Tolerance
24 h ±0,5 h
7 days ±3 h
14 days ±6 h
21 days ±9 h
28 days ±12 h
A.3 Test materials
A.3.1 General

Condition all test materials for at least 24 h under standard conditions. The materials to be tested shall

be within their shelf life.
A.3.2 Ceramic tiles
The tiles shall be clean and dry.
The tiles used for this method shall be of:

type V1: fully vitrified tile complying with EN 14411:2016, with a water absorption ≤ 0,5 % by mass,

unglazed and with a plain adhering surface, with facial dimensions of (50 ± 1) mm × (50 ± 1) mm.

A.3.3 Test substrate
A.3.3.1 Concrete slab
The concrete slab shall comply with EN 12004-2:2017.
A.3.3.2 Other substrates (optional)

Other substrates may be used upon agreement if the substrate is recommended for the ceramic tile

application by the manufacturer. To demonstrate compatibility with other optional substrates, the

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prEN 14891:2020 (E)

product shall be applied to the selected substrate in accordance with the initial adhesion test method

(A.6.2). When a result of more or equal to 0,5 N/mm is achieved or cohesive failure occurs in the

substrate, the requirement is considered satisfied.
A.3.4 Ceramic tile adhesive
The ceramic tile adhesive shall comply with prEN 12004-1:2020.
A.3.5 Sodium hypochlorite
Analytical grade sodium hypochlorite.
A.4 Apparatus
A.4.1 Weight (Mass)

A mass capable of exerting a force of (20 ± 0,05) N, with a cross-sectional area of less than

50 mm × 50 mm.
A.4.2 Pull head plates

Square metallic plates, with dimensions of 50 mm × 50 mm and a thickness of minimum 10 mm with a

suitable fitting for connection to the test machine.
A.4.3 Machine for pull testing

A test machine for direct pull tensile force test and with suitable capacity and sensitivity for the test. The

machine shall be capable of applying the load to the pull-head plate at the rate of (250 ± 50) N/s through

a suitable fitting that does not exert any bending force.
A.4.4 Air-circulating oven
An air-circulating oven capable of controlling the temperature to within ± 3 °C.
A.4.5 Mould

The mould shall consist of six horizontal compartments so that six prismatic specimens

(12 ± 0,1) mm × (40 ± 1) mm × (160 ± 1) mm, with a square hole, with (4 ± 0,1) mm side, in the middle of

the narrowest face, can be prepared simultaneously. In order to avoid the sliding of the sample in the

dynamometer, the ends of the specimen shall be greater than the middle (see Figure A.1) and a clamp as

shown in Figure A.2 shall be used.
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