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BSI PAS 670:2021

Magnesium oxide-based boards for use in buildings. Specification
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BSI PAS 670:2021

Magnesium oxide-based boards for use in buildings. Specification

PUBLISH DATE 2021
PAGES 12
BSI PAS 670:2021

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:

  1. dimensions and tolerances (see Clause 7);

  2. physical requirements and characteristics (see Clause 8);

  3. durability (see Clause 9);

  4. release of dangerous substances (see Clause 10);

  5. moisture movement (see Clause 11);

  6. reaction to fire (see Clause 12);

  7. performance in a humid environment (see Clause 13);

  8. verification of quality management system (QMS), factory production control (FPC) and consignment inspection (see Clause 14); and

  9. 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.

SDO BSI: British Standards Institution
Document Number 670
Publication Date Sept. 30, 2021
Language en - English
Page Count 12
Revision Level
Supercedes
Committee ZZ/2
Publish Date Document Id Type View
Sept. 30, 2021 PAS 670:2021 Revision