SIST EN 13914-2:2016
(Main)Design, preparation and application of external rendering and internal plastering - Part 2: Internal plastering
Design, preparation and application of external rendering and internal plastering - Part 2: Internal plastering
This standard concerns the design considerations and essential principles for internal plastering systems and application of plastering systems. The standard gives in different parts requirements and recommendations for building details, design and materials considerations, the selection of mixes and the application of gypsum plasters; gypsum/lime plasters; premixed lightweight plasters; anhydrite plasters; lime/gypsum; cement and cement/lime based plasters; lime based plasters, silicate plasters, polymer plasters and polymer modified plasters. This standard does not deal with the following: - external finishes; - painting and or preparation; - impregnations; - structural repair of concrete; - fibrous plasterwork
Planung, Zubereitung und Ausführung von Außen- und Innenputzen - Teil 2: Innenputze
Diese Europäische Norm erfasst Überlegungen für die Planung und wesentliche Grundsätze für Innenputzsysteme sowie für die Ausführung von Putzsystemen.
Diese Norm enthält in den einzelnen Abschnitten Anforderungen an und Empfehlungen für bauliche Details, für die bei der Planung und der Auswahl der Materialien anzustellenden Überlegungen, für die Auswahl von Gemischen sowie für das Auftragen von Gipsputz, Gipskalkputz, Fertigleichtputz, Anhydritputz, Putzen auf Kalkgips , Kalk , Zement und Kalkzementbasis sowie Silikatputz, Kunstharzputz und kunstharzmodifiziertem Putz.
Diese Norm gilt nicht für:
- außen liegende Oberflächen;
- Anstriche und/oder ihre Vorbereitung;
- Imprägnierungen;
- die konstruktive Instandsetzung von Beton;
- Putzarbeiten mit Faserbewehrung.
Auf Grund der zahlreichen und unterschiedlichen Stoffe und Praktiken in Europa ist es nicht möglich, zu bestimmten Punkten dieser Norm genügend Einzelheiten anzugeben, um die vollständige Verwendbarkeit dieser Norm in jedem Land sicherzustellen. Anleitungen zur Vervollständigung, nicht jedoch zur Änderung der grundlegenden europäischen Empfehlungen, werden in Dokumentationen angegeben, die von den einzelnen Ländern erstellt werden. Bestimmte Punkte dieser Europäischen Norm, deren grundlegende Empfehlungen der Vervollständigung bedürfen, sind jeweils mit einer auf diesen Abschnitt verweisenden Fußnote versehen.
Conception, préparation et mise en oeuvre des enduits extérieurs et intérieurs - Partie 2: Enduits intérieurs
La présente norme traite des aspects liés à la conception ainsi que des principes essentiels des systèmes d'enduit interne et de la mise en œuvre de ces systèmes.
Les différentes parties de la présente norme spécifient les exigences et recommandations relatives à la construction, à la conception et aux matériaux utilisés, au choix des mélanges et à la mise en œuvre des plâtres pour enduit ; des enduits à base de plâtre/chaux ; des enduits allégés pré-mélangés ; des enduits d'anhydrite ; de la chaux/du plâtre ; des enduits à base de ciment et de ciment/chaux ; des enduits à la chaux, aux silicates, aux polymères et modifiés avec des polymères.
La présente norme ne traite pas :
- des finitions extérieures ;
- de la mise en peinture et/ou de la préparation ;
- des imprégnations ;
- de la remise en état des structures en béton ;
- des ouvrages en staff.
Sous certains aspects, la présente norme ne permet pas d’entrer suffisamment dans le détail pour être pleinement utilisable dans chaque pays en raison de la grande variété de matériaux et de méthodes mis en œuvre en Europe. Des orientations sont alors données dans des documents préparés par chaque pays et viennent compléter mais non remplacer les recommandations européennes de base. Une note de bas de page renvoyant au présent article le signalera aux endroits opportuns de la présente Norme européenne.
Projektiranje, priprava in uporaba zunanjih in notranjih ometov - 2. del: Notranji ometi
Ta standard obravnava smernice za projektiranje in osnovna načela za sisteme notranjih ometov ter njihovo uporabo. Standard v različnih delih podaja zahteve in priporočila za podrobnosti glede gradnje, projektiranja in materialov, izbiro mešanic in uporabo ometov iz mavca; omete iz mavca/apna; vnaprej zmešane lahke omete; anhidridne omete; apno/mavec; cement in omete na osnovi cementa/apna; omete na osnovi apna, silikatne omete; polimerne omete in omete, spremenjene s polimeri. Ta standard ne obravnava naslednjega:
– zunanje obloge:
– barvanje in/ali priprava;
– impregnacija;
– popravilo betonskih konstrukcij;
– obdelava z vlakneno sadro.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Projektiranje, priprava in uporaba zunanjih in notranjih ometov - 2. del: Notranji ometiPlanung, Zubereitung und Ausführung von Außen- und Innenputzen - Teil 2: InnenputzeConception, préparation et mise en oeuvre des enduits extérieurs et intérieurs - Partie 2: Enduits intérieursDesign, preparation and application of external rendering and internal plastering - Part 2: Internal plastering91.100.10Cement. Mavec. Apno. MaltaCement. Gypsum. Lime. MortarICS:Ta slovenski standard je istoveten z:EN 13914-2:2016SIST EN 13914-2:2016en,fr,de01-junij-2016SIST EN 13914-2:2016SLOVENSKI
STANDARDSIST EN 13914-2:20051DGRPHãþD
SIST EN 13914-2:2016
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13914-2
March
t r s x ICS
{ sä s r rä s r Supersedes EN
s u { s væ tã t r r wEnglish Version
Designá preparation and application of external rendering and internal plastering æ Part
tã Internal plastering Conceptioná prßparation et mise en oeuvre des enduits extßrieurs et intßrieurs æ Partie
tã Enduits intßrieurs
Planungá Zubereitung und Ausführung von Außenæ und Innenputzen æ Teil
tã Innenputze This European Standard was approved by CEN on
t January
t r s xä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey andUnited Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
9
t r s x CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s u { s væ tã t r s x ESIST EN 13914-2:2016
EN 13914-2:2016 (E) 2 Contents Page European foreword . 3 1 Scope . 4 2 Normative references . 4 3 Terms and definitions . 5 4 Materials and accessories . 9 4.1 General . 9 4.2 Factory-made and semi-finished factory-made plasters — properties . 9 4.3 Materials for site-made plasters . 10 4.4 Water . 10 4.5 Reinforcement, carriers and beads . 11 4.6 Fixings . 12 4.7 Substructures . 12 5 Essential principles and building programme . 12 5.1 Essential principles . 12 5.2 Building programme . 13 6 Design . 13 6.1 General . 13 6.2 Factors influencing the plastering system . 13 6.3 Durability . 17 6.4 Thermal insulation . 18 6.5 Acoustic properties . 19 6.6 Plasters with enhanced resistance to soluble salts . 19 6.7 Plasters with enhanced protection from x-ray radiation . 19 6.8 Plastering system for decorative finish . 19 6.9 Thickness of plaster coats on walls and ceilings . 19 6.10 Types and standards of plaster finish. 21 6.11 Air tightness . 23 7 Preparation and application of plasters . 24 7.1 Storage . 24 7.2 Cleanliness and protection of the works . 24 7.3 Considerations by the designer for application matters . 24 7.4 Considerations by the applicator . 25 8 Maintenance and repair (other than restoration) . 27 8.1 General . 27 8.2 Inspection . 27 8.3 Efflorescence . 27 8.4 Repairs to cracks . 27 Annex A (normative)
Design considerations for work and acceptance of smooth plaster finishes under aspects of lighting . 29 Annex B (informative)
Methods of minimizing the occurrence of cracks . 31 Annex C (informative)
Fixing applied backgrounds . 32 Annex D (informative)
Restoration of plasters . 35 Bibliography . 37 SIST EN 13914-2:2016
EN 13914-2:2016 (E) 3
European foreword This document (EN 13914-2:2016) 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 standard, 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 rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 13914-2:2005. The initial draft of this document was prepared by the European section of International Union of Contractors of Plastering, Dry Lining, Stucco and Related Activities (UIEP) at the request of the CEN Technical Sector Board (Resolution No.BTS1/56/1991). It has been revised by CEN/TC 125/WG 5 in conjunction with experts of CEN/TC 241. Relevant data are summarized in a series of tables. This part of EN 13914 applies to the design of plaster made of mortars containing inorganic and organic binders and mineral aggregate1) which is applied to internal vertical and soffit surfaces of structures. As this standard 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 able 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 herein to any specific party. Such responsibility is a matter for other documentation associated with the work, e.g. the contract. It has been assumed in the drafting of this document that the application of its provisions is entrusted to appropriately qualified and experienced persons, for whose guidance it has been prepared. The content of CEN Technical Reports containing guidance relating to the design, preparation and application of plaster and plastering systems for gypsum (CEN/TR 15124), cement and/or lime (CEN/TR 15125) and polymer plasters (CEN/TR 15123) has been included. 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, 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.
1) The aggregate can be omitted from mortars made from gypsum plaster or anhydrite binders. SIST EN 13914-2:2016
EN 13914-2:2016 (E) 4 1 Scope This European Standard deals with the design considerations and essential principles for internal plastering systems and application of plastering systems. The different parts of the EN 13914 series of standards specify requirements and recommendations for detailing, design and material considerations, the selection of mixes and the application of gypsum plasters, gypsum/lime plasters, lightweight plasters, lime/gypsum-, cement- and cement/lime-based plasters, lime-based plasters, clay plasters, silicate plasters, organic plasters, polymer-modified plasters, etc. This standard does not deal with the following: — external finishes; — painting and/or preparation; — impregnations; — structural repair of concrete; — prefabricated fibre-reinforced plaster elements. Owing to the many and 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. Such guidance to complement, but not alter, any basic European recommendations is given in documentation prepared by each country. Aspects of this European Standard, the basic recommendations of which may need to be complemented, are indicated where they occur by a footnote referencing this clause. 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 (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 EN 998-1:2010, Specification for mortar for masonry — Part 1: Rendering and plastering mortar EN 1008, 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 10088-1, Stainless steels — Part 1: List of stainless steels EN 10244-1, Steel wire and wire products — Non-ferrous metallic coatings on steel wire — Part 1: General principles EN 10244-2, Steel wire and wire products — Non-ferrous metallic coatings on steel wire — Part 2: Zinc or zinc alloy coatings SIST EN 13914-2:2016
EN 13914-2:2016 (E) 5 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 13055-1, Lightweight aggregates — Part 1: Lightweight aggregates for concrete, mortar and grout EN 13139, Aggregates for mortar EN 13279-1, Gypsum binders and gypsum plasters — Part 1: Definitions and requirements EN 13658-1, Metal lath and beads — Definitions, requirements and test methods — Part 1: Internal plastering EN 13914-1:2016, Design, preparation and application of external rendering and internal plastering — Part 1: External rendering EN 15824, Specifications for external renders and internal plasters based on organic binders EN ISO 16120-2, Non-alloy steel wire rod for conversion to wire — Part 2: Specific requirements for general-purpose wire rod (ISO 16120-2) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 998-1, EN 13279-1, EN 13914-1, EN 13658-1, EN 15824 and the following apply. 3.1 plaster (noun) mixture of different materials (binders, additives, admixtures, water, aggregates) to obtain a surface finish which is applied internally to walls and ceilings 3.2 plastering (verb) application of plaster 3.3 gypsum plaster all kinds of gypsum building plaster, gypsum based building plaster and gypsum-lime building plaster used in buildings [SOURCE: EN 13279-1:2008, 3.2] 3.4 mineral based plaster plaster with one or more inorganic binders 3.5 organic plaster factory made plaster with one or more organic binders in paste or powder form SIST EN 13914-2:2016
EN 13914-2:2016 (E) 6 3.6 designed plaster plaster whose composition and manufacturing method is chosen by the producer in order to achieve specified properties (performance concept) [SOURCE: EN 998-1:2010, 3.3.1, modified] 3.7 prescribed plaster plaster made in pre-determined proportions, the properties of which are assumed from the stated proportion of the constituents (recipe concept) [SOURCE: EN 998-1:2010, 3.3.2, modified] 3.8 plaster coat obtained by application of one or more layers with one or more mixes of the same product 3.9 plaster layer layer produced by the application of the same plaster in one or more operations, "fresh on fresh" 3.10 plaster system plaster coat or sequence of plaster coats to be applied to a background, including the possible use of a support and/or reinforcement and/or pre-treatment 3.11 site made plaster plaster batched and mixed on site 3.12 one coat plaster plaster applied in one coat which fulfils all the functions of a plastering system 3.13 thin coat 1 mm to 6 mm plaster coat applied to a surface 3.14 skim/filler coat 0,1 mm to 5 mm plaster coat applied to a surface 3.15 reinforcement material incorporated within a plaster coat to improve resistance to cracking (e.g. welded wire mesh, glass fibre mesh, fibres) [SOURCE: EN 13914-1:2016, 3.17, modified] 3.16 reinforcing coat polymer modified, mineral or organic plaster layer with a mesh embedded into it and applied over an undercoat or defective background which contributes to the minimising of cracks SIST EN 13914-2:2016
EN 13914-2:2016 (E) 7 [SOURCE: EN 13914-1:2016, 3.18, modified] 3.17 final coat last coat, decorative or not, of a plaster system [SOURCE: EN 13914-1:2016, 3.19, modified] 3.18 background surface of a construction element to which a plaster or a plaster system is to be applied [SOURCE: EN 13914-1:2016, 3.22, modified] 3.19 preparatory treatment actions to be taken on backgrounds with devices, machines and/or tools, to remove dust and unstable or deleterious material e.g. efflorescence [SOURCE: EN 13914-1:2016, 3.23] 3.20 key property of a background or plaster coat which allows the bonding of a plaster without the need for a pre-treatment or carrier [SOURCE: EN 13914-1:2016, 3.24, modified] 3.21 pre-treatment application of a material on the background to improve the application properties of the plaster (e.g. spatterdash, primer, bonding agent) [SOURCE: EN 13914-1:2016, 3.25, modified] 3.22 bond mechanical and/or chemical adhesion between the plaster and the background [SOURCE: EN 13914-1:2016, 3.26, modified] 3.23 bonding agent proprietary material used to provide or improve adhesion of the plaster or plaster system to the background where necessary [SOURCE: EN 13914-1:2016, 3.27, modified] 3.24 primer material for pre-treatment of the background Note 1 to entry: For example primers can be used to reduce suction or to stabilize the surface of the background. SIST EN 13914-2:2016
EN 13914-2:2016 (E) 8 [SOURCE: EN 13914-1:2016, 3.28] 3.25 spatterdash technique for pre-treatment characterized by brushing, throwing or spraying of site or factory made mortar onto a background to improve its bonding properties and/or to regulate the suction of the background [SOURCE: EN 13914-1:2016, 3.29] 3.26 dubbing out process of filling large localized irregularities in the background, such as hollows, prior to the application of a plaster coat [SOURCE: EN 13914-1:2016, 3.30, modified] 3.27 carrier product attached to the background to which a plaster is applied so that the plaster system is largely independent of the background (e.g. lathing) [SOURCE: EN 13914-1:2016, 3.31, modified] 3.28 crazing network of short, irregular and very fine cracks up to approximately 0,2 mm in width Note 1 to entry: Hairline cracks do not impair the function of the plaster and are therefore acceptable to a limited extent. [SOURCE: EN 13914-1:2016, 3.33, modified] 3.29 depth gauge band of plaster or bead used in setting out for a required thickness or evenness [SOURCE: EN 13914-1:2016, 3.34, modified] 3.30 drying time necessary hardening- and drying- time until the next layer or coating can be applied [SOURCE: EN 13914-1:2016, 3.35] 3.31 lining temporary frame for plastering up to 3.32 efflorescence formation of salts on a surface during drying caused by the presence of soluble substances [SOURCE: EN 13914-1:2016, 3.34] SIST EN 13914-2:2016
EN 13914-2:2016 (E) 9 4 Materials and accessories 4.1 General Plasters can be produced entirely in the factory, partly in the factory (semi-finished) or on site. 4.2 Factory-made and semi-finished factory-made plasters — properties 4.2.1 General Factory-made and semi-finished factory-made plasters shall comply with the requirements of EN 998-1, EN 13279-1 or EN 15824 for those parts of the process either wholly or partly carried out in the factory, unless otherwise specified by the manufacturer. For those parts of the process for semi-finished factory-made plasters completed on site, only materials permitted by the manufacturer shall be used. No addition of any material is permitted for wet ready-to-use plasters. Unless otherwise specified by the manufacturer, no addition, other than water in the recommended proportions, shall be added to dry factory-made plasters. Only materials conforming to the requirements of 4.3 should be used. 4.2.2 Gypsum plasters For mixtures based on gypsum or gypsum and lime, factory-made and semi-finished factory-made plasters shall conform to EN 13279-1 for those parts of the process either wholly or partly carried out in the factory. Gypsum plaster can be used in all areas. However, they should not be used under conditions which are persistently damp after the plasters have set as this causes weakening and disintegration. Gypsum undercoats should be sufficiently roughened to provide a key for subsequent coats. For multi-coat gypsum plaster systems, it is not necessary to ensure that thorough drying of one-coat has taken place before application of the following coat, but sufficient strength should have developed. 4.2.3 Lime, cement and lime/cement plasters For mixtures based on cement and/or lime, factory-made and semi-finished factory-made plasters shall conform to EN 998-1 for those parts of the process either wholly or partly carried out in the factory. For those parts of the process for semi-finished factory-made plasters completed on site, the materials should conform to the recommendations of 4.3. Depending on the materials of the plaster mix shrinkage may take place during the drying out process. Cement and/or lime undercoats should be sufficiently roughened to provide a key for subsequent coats. Each undercoat should be allowed to harden before applying the subsequent coat. These plasters can also be polymer-modified. 4.2.4 Plasters based on organic binders These plasters harden essentially by physical drying; they shall comply with EN 15824. The adhesion to different dry backgrounds including paints is usually sufficient. 4.2.5 Silicate plasters Silicate plasters contain silicate and resin as binders. They shall conform to EN 15824. These plasters harden chemically and by physical drying. 4.2.6 Clay plasters Clay plaster is manufactured using clay and, if required, mineral additives and fibre reinforcement. Clay plasters can have different strength characteristics depending on the manufacturer and raw materials. SIST EN 13914-2:2016
EN 13914-2:2016 (E) 10 They need to be used in accordance with the manufacturer's recommendation or with any relevant national regulations. 4.3 Materials for site-made plasters 4.3.1 General Constituent materials with established suitability shall be used, as detailed in 4.3.2 to 4.3.5. Mix proportions, if applicable, are given in national standards. 4.3.2 Mineral binders Mineral binders with established suitability shall be used. Binders shall conform to the relevant standards listed in Table 1. Table 1 — Mineral binders Material Standard Remarks Common cements EN 197-1 Not all types will be suitable for each and every applicationa
Masonry cements EN 413-1 Building lime EN 459-1 Gypsum binder EN 13279-1 a Refer to final paragraph of Clause 1 for further information. 4.3.3 Aggregates Aggregates shall conform to EN 13139 for dense aggregates or EN 13055-1 for light aggregates, as appropriate. 4.3.4 Admixtures for cement- and/or lime-based plasters The admixtures used should conform to EN 934-3. However, admixtures falling outside the scope of EN 934-3 can be used in accordance with the manufacturer's instructions. 4.3.5 Colouring agents Colouring agents (e.g. inorganic and organic pigments or pigment preparations, dyes, natural minerals) should not have any influence on the behaviour of the fresh or hardened render. They shall be stable, unaffected by alkalinity or exposure to light and shall not easily be leached out by water. The use of colouring agents on the construction site shall always be subject to prior tests. Pigments shall conform to EN 12878. A uniform shade of the finishing coat is not generally ensured. 4.3.6 Fibres Natural and synthetic fibres, that do not affect the chemical or physical stability of the plaster, may be used either added on site or in premixed or factory made plasters. Fibres shall be dry, clean and free from oil or grease. 4.4 Water Water used for plasters shall fulfil the requirements of EN 1008. Drinking or potable water is suitable. SIST EN 13914-2:2016
EN 13914-2:2016 (E) 11 4.5 Reinforcement, carriers and beads Reinforcement, carriers and beads should conform to the recommendations given in Table 2. Plastic beads may be used if they comply with the manufacturer's recommendation. Table 2 — Materials for reinforcement, carriers and beads Product Material Related Standards Remarks Reinforcement Glass fibre mesh EN 13496 Alkali-resistant glass fibre mesh can be used for all types of plaster. The use of non-alkali-resistant glass fibre mesh is not suitable for products containing cement and/or lime. The minimum mesh size to be used should correspond to the type of plaster used (e.g. 4 mm x 4 mm). For plasters with a grain size of less than 1 mm the mesh size should be not less than 2,5 mm x 2,5 mm. Expanded metal (stainless steel or zinc-coated steel) plain or profiled welded wire mesh (stainless steel or zinc coated) EN 13658-1 Stainless steel in accordance to EN 10088-1 (austenitic steel) Zinc-coated steel in accordance with EN ISO 16120-2 and EN 10346 The square mesh should be not less than 12 mm and not more than 50 mm with wires not less than 0,9 mm. Where the aggregate grain size exceeds 3 mm the use of a mesh larger than 15 mm should be considered. Carrier Profiled wire lath (stainless steel or zinc-coated steel) EN 13658-1 Profiled wire lath - in longitudinal direction or evenly distributed indentations to provide rigidity and easy fixing to the background Stainless steel clay lath
Expanded metal (stainless steel or zinc-coated steel) Stainless steel in accordance with EN 10088-1 (austenitic steel) Zinc-coated steel in accordance with EN ISO 16120-2 and EN 10346 Profiled welded wire mesh (stainless steel or zinc-coated)
Beads (e.g. corner beads) Stainless steel and zinc coated steel EN 13658-1 Stainless steel in accordance with EN 10088-1 (austenitic steel) Zinc-coated steel in accordance with EN ISO 16120-2 and EN 10346 Plastic and plastic coated steel products
Other products and/or techniques may be used and defined at national level.a a Refer to final paragraph of Clause 1 for further information. SIST EN 13914-2:2016
EN 13914-2:2016 (E) 12 Metal lathing, reinforcement and beads of whatever type shall be suitable for internal use. Careful consideration should be given to the choice of the material for its use in typical applications in wet areas, e.g. commercial kitchens. Products made of special alloys such as coated zinc alloy shall be in accordance with EN 10346. 4.6 Fixings Consideration should be given to the corrosion resistance of beads fixed with mortar. It is recommended that mortar systems be used with the same binder system and not to mix e.g. gypsum with cement. If the beads, lathing or reinforcement are mechanically fixed with nails, screws or staples, attention shall be given to the compatibility of the fixing with the bead, lathing or reinforcement. The fixings shall be in accordance with EN 10088-1 (austenitic steel) if stainless steel is used and with EN ISO 16120-2, EN 10346, EN 10244-1 and EN 10244-2 if zinc-coated steel is used. 4.7 Substructures Substructures may consist of galvanized steel, stainless steel or timber. The carrier is fixed to the substructure in order to receive the plaster. Substructures shall be of sufficient strength so that the carrier and the plaster applied to the carrier are both held rigidly. 5 Essential principles and building programme 5.1 Essential principles The design shall include drawings and specifications, e.g. quantities, prepared in detail to afford proper guidance in the preparation of estimates and the execution of the work. Prior to the commencement of the contract there should be an exchange of information between all parties concerned. When preparing plastering details the designer shall take into account the following points: a) nature and condition of the background, including any necessary preparatory treatment or pre-treatment; b) functional requirements; c) type of plaster and other materials to be used in the plastering system. It is recommended that these materials should conform to the appropriate documents where available and where not availa
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