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Magnesium oxide-based boards for use in buildings. Specification
This PAS specifies requirements for flat sheet building boards manufactured using *magnesium oxychloride* or *magnesium oxysulfate* for the purpose of partitioning or internal and external lining of buildings, including the following characteristics:
Dimensions and tolerances (see Clause 7);
Physical requirements and characteristics (see Clause 8);
Durability (see Clause 9);
Release of dangerous substances (see Clause 10);
Moisture movement (see Clause 11);
Reaction to fire (see Clause 12);
Performance in a humid environment (see Clause 13);
Verification of quality management system (QMS), factory production control (FPC) and consignment inspection (see Clause 14); and
Product traceability (see Clause 15).
This PAS is intended for use by **manufacturers**, **distributors** and **third-party verifiers**, and sets out the requirements for how boards should be tested and verified as fit for purpose.
The PAS is *not* an installation guide.
The PAS is *not* applicable to the use of boards as *flooring*, *sarking* and *roofing*.
The PAS is *not* applicable to specific applications for which additional testing is required to demonstrate fitness for intended purpose, e.g. use of boards for racking resistance and as direct render substrates.
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