STANDARD FOR THERMAL INSULATION, POLYSTYRENE BOARDS
1.1 This Standard specifies the requirements for factory made rigid polystyrene insulation in the form of
boards with or without facings or coatings made by moulding of pre-expanded beads (EPS) or extrusion
of polystyrene (XPS). This Standard does not apply to laminated products manufactured with any type of
rigid board facer including fibreboard, perlite board, gypsum board, or oriented strand board.
1.2 The Standard describes product characteristics and includes procedures for testing, evaluation of
conformity, marking and labelling. The Standard covers four types of rigid expanded polystyrene
distinguished on the basis of their material properties. Products manufactured to meet the requirements
of this Standard are intended for use as thermal insulation in building construction and other applications
for temperatures ranging from -54 °C to +75 °C.
NOTE: Recommended practices for verification of quality consistency by the manufacturer and by a third party are
included in Annex C for EPS insulation.
1.3 The performance of systems incorporating rigid polystyrene insulation manufactured in compliance
with this Standard is not addressed in this Standard.
NOTE 1: For more detailed information on product properties, see Subsection 8.1.
NOTE 2: For applications other than the above – e.g., cryogenic, flotation, pipe covering, etc. – consult manufacturers
for specific recommendations and properties.
NOTE 3: This Standard does not purport to address all possible end-use concerns. It is the responsibility of the user
of this Standard to contact the manufacturer regarding design considerations including specific end-use applications.
1.4 Requirements for flat, uncoated EPS thermal insulation boards for use in exterior insulation and finish
systems (EIFS) are addressed in Annex B.
1.5 The testing and evaluation of a product against this Standard may require the use of materials and/or
equipment that could be hazardous. This document does not purport to address all the health and safety
aspects associated with its use. Anyone using this standard has the responsibility to consult the
appropriate authorities and to establish health and safety practices, in conjunction with any existing
applicable regulatory requirements, prior to its use.