1、BSI Standards PublicationBS EN 13914-1:2016Design, preparation andapplication of externalr e n d e r i n g a n d i n t e r n a lplasteringPart 1: External renderingBS EN 13914-1:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 13914-1:2016.It supersedes BS E
2、N 13914-1:2005 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/544, Plastering, rendering, dry lining.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the
3、 necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 79413 1ICS 91.100.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard
4、 was published under the authority of theStandards Policy and Strategy Committee on 31 March 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 13914-1:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13914-1 March 2016 ICS 91.100.10 Supersedes EN 13914-1:20
5、05English Version Design, preparation and application of external rendering and internal plastering - Part 1: External rendering Conception, prparation et application des enduits extrieurs et intrieurs - Partie 1: Enduits extrieurs Planung, Zubereitung und Ausfhrung von Auen- und Innenputzen - Teil
6、1: Auenputz This European Standard was approved by CEN on 2 January 2016. 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. Up-to-date lists and bibliogr
7、aphical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibi
8、lity 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, Former Yugoslav Republic
9、 of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISAT
10、ION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13914-1:2016 EBS EN 13914-1:2016EN 13914-1:2016 (E) 2 Contents Page European f
11、oreword . 4 1 Scope 6 2 Normative references 7 3 Terms and definitions . 8 4 Essential principles and building programme 11 4.1 Essential principles . 11 4.2 Building programme . 12 5 Materials 12 5.1 Types of render . 12 5.2 Materials for site-made renders . 14 5.3 Water 15 5.4 Materials for reinfo
12、rcement, carrier and beads . 15 5.5 Fixings 16 5.6 Firring. 17 6 Design considerations 17 6.1 General . 17 6.2 Factors affecting the design of the rendering system . 17 6.3 Characteristics of background 18 6.4 Adequacy of the background . 19 6.5 Durability of the render . 20 6.6 Exposure conditions
13、21 6.7 Resistance to rain penetration 21 6.8 Resistance to water rising from the ground without pressure (capillary water) 22 6.9 Soluble salts . 22 6.10 Effects of atmospheric pollution . 22 6.11 Effects of freezing . 22 6.12 Resistance to impact or abrasion . 23 6.13 Corrosion of metals . 23 6.14
14、Occurrence of cracking 23 6.15 Thermal considerations 26 6.16 Protection afforded by architectural features and functions 26 6.17 Selection of renders. 36 6.18 Number, thickness and relative strength of coats 37 6.19 Types of finish . 40 6.20 Colour and texture . 40 7 Work on site, preparation and a
15、pplication of renderings 41 7.1 General . 41 7.2 Storage of materials 41 7.3 Scaffolding 41 7.4 Protection of adjacent surfaces . 41 7.5 Preparation of background 41 7.6 Proportioning of mix materials on site 44 7.7 Mixing on site . 44 7.8 Forming architectural features . 45 BS EN 13914-1:2016EN 139
16、14-1:2016 (E) 3 7.9 Application of the various coats 45 8 Maintenance and repair (other than restoration) 46 8.1 General . 46 8.2 Inspection 47 8.3 Repairs to cracks . 47 8.4 Repair of hollow or detached areas . 47 8.5 Overcoming unsatisfactory appearance. 48 8.6 Overcoming water penetration . 49 An
17、nex A (informative) Example on the selection of site mixed prescribed renders mixed in accordance with background type . 50 A.1 General . 50 A.2 Strong mixes . 50 A.3 Moderately strong mixes . 50 A.4 Weak mixes . 50 Annex B (informative) Restoration of renders on old and historic buildings . 51 B.1
18、General . 51 B.2 Preliminary investigations 51 B.3 Preparatory work . 53 B.4 Restoration systems and measures . 53 B.5 Design . 54 B.6 Application 54 Annex C (informative) Examples of products for reinforcement, carrier and beads 56 C.1 General . 56 C.2 Figures 56 Annex D (informative) Examples of t
19、ypes of finish . 60 Bibliography . 61 BS EN 13914-1:2016EN 13914-1:2016 (E) 4 European foreword This document (EN 13914-1:2016) has been prepared by Technical Committee CEN/TC 125 “Masonry”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national stand
20、ard, either by publication of an identical text or by endorsement, at the latest by September 2016, and conflicting national standards shall be withdrawn at the latest by September 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rig
21、hts. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 13914-1:2005. The first draft of this document was prepared by the European Union of Contractors of Plastering, Dry Lining, Stucco and Related Activities (UEEP) at the req
22、uest of the CEN Technical Sector Board (Resolution No. BTS1/56/1991). This document gives requirements and recommendations for building details, design and materials considerations, the selection of mixes and the application of renders based on cement, lime or organic binders for use on external bac
23、kgrounds. NOTE The term rendering mortar is used in the European Standard product specification EN 998-1, but to reflect common usage in relation to this document and for ease of reference the term render (noun) has been used. A rendered finish may be applied to a variety of backgrounds, either to i
24、mprove resistance to rain penetration and weathering and/or for aesthetic reasons. For the purposes of this document (except where stated in relation to a specific product standard) the term strength should be considered in terms of relative strengths between different types of backgrounds compared
25、with the nominal strengths of prescribed render mixes. Although it may be possible to consider this in terms of compressive strength, this standard deals with aspects of a craft as opposed to design calculations. Therefore strength is not considered in terms of numerical values derived from testing.
26、 Similar considerations also apply to terms such as movement, absorbency and permeability etc. used in this document. This document refers only to the technical suitability of materials and/or procedures. During the application the user will need to observe any legal obligations relating to health a
27、nd safety at any stage. Because this document is a code-like document as opposed to the more conventional European product standard, it is appropriate to mention that, as with product standards, the use of the verbal form shall denotes a requirement for which verification of compliance has to be abl
28、e to be demonstrated. Recommendations are denoted by the verbal form should and should be followed unless there is a justifiable reason for not doing so. It is not the function of this standard to assign responsibility for the design and application of any work or actions mentioned within to any spe
29、cific party. Such responsibility is a matter for other documentation associated with the work, e.g. the contract. BS EN 13914-1:2016EN 13914-1:2016 (E) 5 It has been assumed in the drafting of this document that the application of its provisions is entrusted to appropriately qualified and experience
30、d people, for whose guidance it has been prepared. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland,
31、 Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 13914-1:2016EN 13914-1:2016 (E
32、) 6 1 Scope This European Standard specifies requirements and recommendations for the design, preparation and application of renders based on cement, lime or other mineral binders, and/or combinations thereof, masonry cement and polymer modified binder based external renderings, in accordance with E
33、N 998-1 or site made renders; renders based on organic binders in accordance with EN 15824 on all common types of backgrounds. It includes rendering on both new and old backgrounds and the maintenance and repair of existing work. This document gives guidance on the use of established site, factory a
34、nd semi-finished factory made renders. This document does not cover the following: a) the use and application of special renders for liquid retaining structures, e.g. coatings, and for backgrounds to cladding systems; b) the structural repair of concrete; c) the installation of external thermal insu
35、lation composite systems (ETICS); d) the specification and use of sealants used to seal joints for use with rendering; e) the use of gypsum based renders used externally, but their use may be permitted in some countries; Gypsum based products soften when subject to prolonged moist conditions. The us
36、e of such products externally will depend upon the climatic conditions where the render will be used and on the local building traditions. With the exception of some drier countries in southern Europe gypsum based renders are generally not recommended for external use and are therefore not included
37、within the scope of this document. However, their use may be permitted and controlled locally.1)f) renders on historical monuments or buildings in protected areas which may be regulated by national codes; g) the design and installation of flashings at windowsills and elsewhere. Because of the many a
38、nd varied materials and practices and different climatic conditions in Europe it is not possible for certain aspects of the standard to enter into sufficient detail to be fully usable to practitioners in each country. Appropriate guidance to complement, but not alter any basic European recommendatio
39、ns is given in documentation prepared by each country. Aspects of this European Standard whose basic recommendations may need to be complemented are indicated where they occur by a footnote referencing this clause. 1) Refer to final paragraph of Clause 1 for further information. BS EN 13914-1:2016EN
40、 13914-1:2016 (E) 7 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document
41、(including any amendments) applies. EN 197-1, Cement Part 1: Composition, specifications and conformity criteria for common cements EN 413-1, Masonry cement Part 1: Composition, specifications and conformity criteria EN 459-1, Building lime Part 1: Definitions, specifications and conformity criteria
42、 EN 934-3, Admixtures for concrete, mortar and grout Part 3: Admixtures for masonry mortar Definitions, requirements, conformity and marking and labelling EN 998-1:2010, Specification for mortar for masonry Part 1: Rendering and plastering mortar EN 1008, Mixing water for concrete Specification for
43、sampling, testing and assessing the suitability of water, including water recovered from processes in the concrete industry, as mixing water for concrete EN 1996-2, Eurocode 6 Design of masonry structures Part 2: Design considerations, selection of materials and execution of masonry EN 10088-1, Stai
44、nless steels Part 1: List of stainless steels EN 10346, Continuously hot-dip coated steel flat products for cold forming Technical delivery conditions EN 12878, Pigments for the colouring of building materials based on cement and/or lime Specifications and methods of test EN 13055 (all parts), Light
45、weight aggregates EN 13139, Aggregates for mortar EN 13496, Thermal insulation products for building applications Determination of the mechanical properties of glass fibre meshes as reinforcement for External Thermal Insulation Composite Systems with renders (ETICS) EN 13658-2, Metal lath and beads
46、Definitions, requirements and test methods Part 2: External rendering EN 15824:2009, Specifications for external renders and internal plasters based on organic binders EN ISO 1461, Hot dip galvanized coatings on fabricated iron and steel articles Specifications and test methods (ISO 1461) EN ISO 161
47、20-2, Non-alloy steel wire rod for conversion to wire Part 2: Specific requirements for general-purpose wire rod (ISO 16120-2) BS EN 13914-1:2016EN 13914-1:2016 (E) 8 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 998-1, EN 13658-2, EN 15824 and the
48、following apply. 3.1 render (noun) mix of one or more inorganic and/or organic binders, aggregates, water and sometimes admixtures and/or additions used for protective and/or decorative reasons to obtain a surface finish which is applied to walls and ceilings SOURCE: EN 998-1:2010, 3.1, EN 15824:200
49、9, 3.1, modified 3.2 rendering (verb) application of render 3.3 factory made render render batched and mixed in a factory Note 1 to entry: It may be dry render which is ready mixed only requiring the addition of water and further mixing or wet render which is supplied ready to use. SOURCE: EN 998-1:2010, 3.4.1, modified 3.4 prebatched render mortar whose constituents are wholly batched in a factory, supplied to the building site and mixed there in accordance with the manufacturers specification and conditions S
