EN 336, Structural timber — Sizes, permitted deviations EN 338, Structural timber — Strength classes EN 1995-1-1, Eurocode 5 — Design of timber structures EN 12114, Thermal performanc
General
The required number of plasterboards to determine the compliance with specification should be sampled from a delivery consignment of boards
The appropriate consignment size should be agreed between representatives of any involved parties who should have the opportunity to be present at the time of sampling.
Sampling procedure
Random sampling
Whenever practically possible, the random sampling method should be used, in which every plasterboard in the consignment has an equal chance of being selected for the sample
Three boards of each type should be selected from positions throughout the consignment without any consideration given to the condition or quality of the selected boards.
Representative sampling
When random sampling is not feasible, such as when boards are stacked in a way that limits access to only a few, a representative sampling method should be employed.
The consignment must be divided into a minimum of three equal sections, whether real or imaginary From each section, a board should be randomly selected to obtain the necessary number of samples as specified in section 5.1.
To access the boards within the stacks for sampling, it is essential to remove certain sections of the stack or stacks.
7) In practice, random sampling is normally only convenient either when the boards forming the consignment are being moved in a loose (unpacked) form from one place to another or when they have been split into a large number of small stacks awaiting installation
A.2.2.3 Sampling from a consignment formed of banded or wrapped packs
To ensure a thorough sampling process, randomly select a minimum of three packs from the consignment Remove the packaging from each selected pack and randomly sample one board from within each pack, focusing solely on obtaining the required number of samples without regard to the condition or quality of the boards.
! Conditions for reaction to fire classification of gypsum plasterboards without further testing
[This annex reproduces conditions set out in Commission Decision 2006/673/EC If Commission Decision is amended, then the amended conditions apply.]
Introduction
Boards complying with the limits given in the table below are classified in the Euroclass shown for the end use applications stated
Table B.1 — Classes of reaction to fire performance of gypsum plasterboards
G ≤ 220 Any wood-based product with density ≥ 400 kg/m 3 or any product of at least class A2-s1, d0
G ≤ 220 Any wood-based product with density ≥ 400 kg/m 3 or any product of at least class A2-s1, d0 or any insulating product of at least class E-d2 mounted according to method 1
220 < G ≤ 320 B-s1, d0 a Determined according to EN ISO 536 and with no more than 5 % organic additive content b Classes as provided for in Table 1 of the Annex to Commission Decision 2000/147/EC.
End use application
General
The gypsum plasterboards shall be mounted and fixed using one of the three following methods
B.1.2 (Method 1) Mechanically fixed to a supporting substructure
Gypsum boards, particularly the outermost layer in multi-layer systems, must be securely attached to a metal substructure as specified in EN 14195, or to a timber substructure in compliance with EN 336 and EN 1995-1-1.
The maximum span between supporting members in a substructure that provides support in only one direction must not exceed 50 times the thickness of the gypsum boards.
When the substructure includes supporting members in two directions, the maximum span in either direction shall not exceed a dimension equal to 100 times the thickness of the gypsum boards
Mechanical fixings, including screws, staples, or nails, must be installed through the thickness of gypsum boards into the substructure, with spacing not exceeding 300 mm along the length of each supporting member.
Gypsum boards may be installed over an air space or insulating material, with specific substrate requirements based on thickness and density For gypsum boards with a nominal thickness of 6.5 mm to 9.5 mm, the substrate must be a wood-based product with a density of at least 400 kg/m³ or a product classified as A2-s1, d0, with a core density of at least 800 kg/m³ For boards with a nominal thickness of 9.5 mm or greater, the substrate must also be a wood-based product with a minimum density of 400 kg/m³ or a product of at least class A2-s1, d0, but with a core density of at least 600 kg/m³ Additionally, any insulating material used must meet at least class E-d2 standards for gypsum boards of 9.5 mm nominal thickness or more.
Each joint between adjacent gypsum boards must maintain a gap width of 4 mm or less This requirement is applicable to all joints, irrespective of whether they are directly supported by a substructure or filled with jointing material.
In situations (a) and (b), any joint between adjacent gypsum boards that lacks direct support from a substructure supporting member and has a gap width greater than 1 mm must be completely filled with the specified jointing material.
EN 13963 (the other joints may remain unfilled)
In case (c) all joints between adjoining gypsum boards shall be fully filled with a jointing material as specified in
B.1.3 (Method 2) Mechanically fixed to a solid wood-based substrate
The gypsum boards shall be mechanically fixed to a solid wood-based substrate with density ≥ 400 kg/m 3
There shall be no cavity between the gypsum boards and the substrate
The mechanical fixings shall be screws, staples or nails The distance between the mechanical fixings shall correspond to the rules given above for method 1
Each joint between adjoining gypsum boards shall have a gap width ≤ 4 mm and may remain unfilled
B.1.4 (Method 3) Mechanically fixed or bonded to a solid substrate (dry lining system)
The gypsum boards shall be fixed directly to a solid substrate with a reaction to fire classification of at least class A2-s1, d0
Gypsum boards can be attached to a solid substrate either by using screws or nails that penetrate through the thickness of the boards, or by adhering them with "dabs" of gypsum-based adhesive as specified.
In either case the screw or nail fixings or the adhesive “dabs” shall be positioned at maximum 600 mm vertical and horizontal centres
All joints between adjoining gypsum boards may remain unfilled."
Mounting and fixing in the test according to EN 13823 (SBI test)
Introduction
If the conditions outlined in Annex B, such as board thickness, gypsum core, and paper grammage, are not met, or if regulations necessitate testing the fire reaction behavior of gypsum plasterboard assemblies on substrates below Class A2-s1,d0, specific mounting and fixing rules must be followed.
General applications
Gypsum plasterboards should be installed using a specific method that ensures optimal performance under demanding conditions This classification is applicable to all end-use applications, and the results obtained for a particular board thickness are also valid for thicker boards.
The boards shall be mechanically fixed to a metal sub-structure (made from components detailed in EN 14195) as shown in Figures C.1a to C.1c
The structure shall be vertical steel studs with a web width of 70 mm to 80 mm and a metal thickness of 0,5 mm to 0,6 mm positioned as shown in Figure C.1b
The mechanical fixings will consist of screws, which are to be installed through the thickness of the boards into the sub-structure at centers of (300 ± 30) mm along the length of each supporting member.
Both vertical and horizontal joints shall be included positioned as shown in Figure C.1a All joints between adjoining boards shall be butted and unfilled
The cavity behind the boards created by the sub-structure must be filled with non-fire resistant treated polyurethane (PUR) with a density of (35 ± 5) kg/m³ The required thickness of the insulation should be 10 mm to 15 mm less than the width of the web.
An 40 mm air gap shall be left between the PUR and the calcium silicate boards
Figure C.1 a) — Joints Figure C.1 b) — Sub-structure
Figure C.1 — Mounting and fixing of plasterboard to a metal sub-structure"
Limited applications regarding joint filling
Gypsum plasterboards must be installed and secured, with cavities filled as outlined in section C.1 Additionally, the joints should be treated using jointing materials that meet the standards of EN 13963.
The findings are applicable to all end-use applications, provided that the joints are treated with jointing materials that meet the EN 13963 standard Additionally, the results for a specific board thickness are valid for all thicker boards.
Limited applications regarding wood based substrates"
Gypsum plasterboards must be installed using a specific method, applicable to wood-based substrates with a minimum density of 350 kg/m³, as well as Class A1 and A2 substrates The findings for a particular board thickness are valid for all thicker boards The boards should be mechanically attached to a continuous timber background that is 15 to 20 mm thick (± 2 mm) and has a density of 350 ± 50 kg/m³.
The mechanical fixings shall be screws, which shall be fixed through the thickness of the boards into the substrate at 300 mm ± 30 mm centres around all perimeters of the boards
Both vertical and horizontal joints shall be included positioned as shown in Figure C.1a All joints between adjoining boards shall be butted and unfilled
Figure C.2 – Plasterboard fixing in wood based substrates
Clauses of this European Standard addressing provisions of EU
ZA.1 Scope and relevant characteristics
This European Standard has been prepared under a Mandate M/106 “Gypsum products” given to CEN by the European Commission and European Free Trade Association
The Clauses of this European Standard, shown in Table ZA.1 below, meet the requirements of the Mandate given under EU Construction Products Directive (89/106/EEC)
Adhering to these Clauses suggests that the plasterboards specified in this Annex are suitable for their intended applications, as indicated by the accompanying CE marking information.
WARNING — Other requirements and other EU Directives, not affecting the fitness for intended use(s), may be applicable to the plasterboards falling within the scope of this European Standard
In addition to the specific clauses regarding regulated substances in this standard, other applicable requirements may exist for the products covered, including transposed European legislation and national laws Compliance with these additional requirements is essential to meet the provisions of the EU Construction Products Directive whenever they are relevant.
NOTE 2 An informative database of European and national provisions on regulated substances is available at the
Construction web site on EUROPA (accessed through
! http://ec.europa.eu/enterprise/construction/internal/dangsub/dangmain_en.htm ")
This Annex aligns with Clause 1 of the standard concerning the covered products and outlines the conditions for CE marking of gypsum plasterboards for specified uses, referencing the applicable Clauses in Table ZA.1.
Table ZA.1 — Scope and requirement Clauses relevant for CE marking Product: Gypsum plasterboards
Intended use(s): General building construction (see Clause 1)
Essential characteristics from the Mandate
Requirements Clause in this European standard
Mandated level and/or class
Shear strength (for stiffening timber framed external walls and timber roof truss structures)
Reaction to fire (for exposed situations) 4.2.1 A1 to F A1 to F
Water vapour permeability (for moisture diffusion control)
*Impact resistance (in end use conditions)
Performance declared is for the system of which the product is a part
*Direct airborne sound insulation (in end use conditions)
− dB Performance declared is for the system of which the product is a part
*Acoustic absorption (in end use conditions)
− dimensionless Performance declared is for the system of which the product is a part
− Expressed as thermal conductivity in W/(m.K)
*Note These characteristics are system dependent and will be provided in producer's literature based upon intended use
In Member States without regulatory requirements for a specific characteristic related to a product's intended use, producers are not required to assess or declare the performance of their products concerning that characteristic Consequently, they may utilize the "No Performance Determined" (NPD) option in the information accompanying the CE marking.
The NPD option may not be used, however, where the characteristic is subject to a threshold level
ZA.2 Attestation and declaration of conformity of gypsum plasterboards
The attestation system for the conformity of gypsum plasterboards is outlined in Table ZA.2, as per the Commission Decision 95/467/EC and Annex III of Mandate M/106 "Gypsum products," detailing the intended uses and applicable levels or classes.
The fire performance of paper remains consistent throughout the production process, as it is not subject to change Regular monitoring of the paper's weight per unit area ensures compliance, making only Attestation of Conformity systems 3 and 4 relevant.
Table ZA.2 — Systems of attestation of conformity (AoC)
Product Intended use Characteristics AoC system
In all uses subjected to reaction to fire requirements
For stiffening timber framed wind load bearing walls or timber roof structures
For situations and uses not mentioned above
All 4 a For products complying with the Commission Decision 2003/43/EC as amended (see section 5.2.1) system 4 applies
System 3: See Directive 89/106/EEC (CPD) Annex III.2.(ii), Second possibility
System 4: See Directive 89/106/EEC (CPD) Annex III.2.(ii), Third possibility
The distribution of responsibilities between the producer and the Approved Body is detailed in Tables ZA.3a, ZA.3b, and ZA.3c, corresponding to the specified intended uses For products with multiple intended uses, it is essential to consult the tables together for comprehensive understanding.
Table ZA.3a — Assignment of evaluation of conformity tasks for gypsum plasterboards intended to be used where they are subject to reaction to fire requirements : Systems 3 and 4
Tasks Content of the task Clauses of this standard to apply
All relevant characteristics of Table ZA.1
Reaction to fire is ensured by controlling:
— the thickness of the board;
— the grammage and organic additive content of the paper liner;
— the density of the board;
— the reaction to fire of the core by controlling the organic additive of the core
Water vapour permeability a Flexural strength
Those relevant characteristics of Table ZA.1 not tested by the approved body
Reaction to fire is determined by testing according to the requirements of the CWFT decision:
— the thickness of the board;
— the grammage and organic additive content of the paper liner;
— the density of the board;
— the reaction to fire of the core
Water vapour permeability a Flexural strength
Thermal resistance d Tasks for the approved body c
Testing for fire reaction may be unnecessary if the design value is utilized; however, this does not apply to type E products Additionally, products that do not meet the CWFT requirements outlined in Commission Decision 94/611/EC or 2006/673 EC, as amended, are affected It is important to note that this applies only to System 3 products, and testing is not required if the design value is employed.
Table ZA.3b — Assignment of evaluation of conformity tasks for gypsum plasterboards intended for stiffening timber framed wind load bearing walls or timber roof truss structures : System 3
Tasks Content of the task Clauses of this standard to apply
All relevant characteristics of Table ZA.1
Water vapour permeability a Flexural strength Thermal resistance b
Those relevant characteristics of Table ZA.1 not tested by the approved body
Water vapour permeability a Flexural strength Thermal resistance b
Tasks for the approved body
(ITT) Shear strength a Not necessary if design value is used; for type E, design value cannot be used b Not necessary if design value is used
Table ZA.3c — Assignment of evaluation of conformity tasks for gypsum plasterboards intended to be used in situations not mentioned above : System 4
Tasks Content of the task Clauses of this standard to apply
As ZA.1 Water vapour permeability a
As ZA.1 Water vapour permeability a
Flexural strength Thermal resistance b a Not necessary if design value is used; for type E, design value cannot be used b Not necessary if design value is used
Upon meeting the conditions outlined in this Annex for products under system 3, the producer or their authorized representative in the EEA must prepare and maintain an EC declaration of conformity This declaration allows the producer to affix the CE marking and must include specific information as required.
name and address of the producer, or his authorised representative established in the EEA;
description of the product (type, identification, intended use, etc.) and a copy of the information accompanying the CE marking;
provisions to which the product conforms (i.e Annex ZA of this document);
particular conditions applicable to the use of the product (e.g provisions for use under certain conditions);
name and address of the approved body;
name of, and position held by, the person empowered to sign the declaration on behalf of the producer or of his authorised representative
Upon achieving compliance with this Annex for products under system 4, the producer or their agent based in the EEA must prepare and maintain an EC Declaration of Conformity This declaration authorizes the producer to affix the CE marking and must include specific details as outlined in the regulations.
name and address of the producer, or his authorised representative established in the EEA;
description of the product (type, identification, intended use, etc.) and a copy of the information accompanying the CE marking;
provisions to which the product conforms (i.e Annex ZA of this document);
particular conditions applicable to the use of the product (e.g provisions for use under certain conditions);
name of, and position held by, the person empowered to sign the declaration on behalf of the producer or of his authorised representative
To prevent information duplication between the declaration and certificate, it is essential to cross-reference the documents when one provides more details than the other.
The declaration and certificate must be submitted in the official language(s) of the EU Member State where the product will be utilized.
ZA.3 CE marking and labelling
The producer or their authorized representative within the EEA is responsible for affixing the CE marking, which must comply with Directive 93/68/EC This marking should be displayed on the plasterboard, or if not feasible, on the accompanying label, packaging, or commercial documents such as a delivery note Additionally, specific information must accompany the CE marking symbol.
name or identifying mark and registered address of the producer;
the last two digits of the year in which the marking is affixed;
description of the product: generic name, material, dimensions and intended use;
information on those relevant essential characteristics listed in Table ZA.1 which are to be declared presented as:
declared values and, where relevant, level or class (including "pass" for pass/fail requirements where necessary) to declare for each essential characteristic as indicated in "Notes" in Table ZA.1;
"no performance determined" for characteristics where this is relevant;
A standard designation serves as an alternative that highlights some or all relevant characteristics If the designation only addresses certain characteristics, it must be accompanied by declared values for the remaining characteristics.