BS 4841-4:2006

Foreword
1 Scope
2 Normative references
3 Terms, symbols and definitions
4 Construction and composition
5 Requirements
6 Designation
7 Marking
Annexes
Annex A (informative) Method for the determination of areas
        of unbonded facings
Annex B (informative) Information for users and designers
Annex C (informative) Reaction to fire performance of
        PIR and PUR products and recommendations
        regarding their use
Annex D (informative) Information on the installation of
        roofboards into single-ply roofs
Bibliography

Defines requirements for polyisocyanurate (PIR) and polyurethane (PUR) cored thermally insulated laminated boards (roofboards) with auto-adhesively or separately bonded flexible and/or rigid facings, for use in roofs under non-bituminous single-ply roofing membranes.

This British Standard specifies requirements for polyisocyanurate (PIR) and polyurethane (PUR) cored thermally insulated laminated boards (roofboards) with auto-adhesively or separately bonded flexible and/or rigid facings, for use in roofs under non-bituminous single-ply roofing membranes. This specification is also applicable to roofboards with OSB or plywood facings bonded in place after the initial product has been created (see Clause 4).

NOTE 1 Additional information for the guidance of users, installers and designers is given in informative Annexes A, B, C, and D to this standard.

NOTE 2 Because of the changes introduced into this standard, products conforming to this standard will also conform to BS EN 13165:2001 (including amendments 1 and 2).