BS 4841-3:1994

Committees responsible
Foreword
Specification
1. Scope
2. References
3. Definition
4. Construction and composition
5. Designation
6. Properties
7. Dimensions
8. Marking
Annexes
A. (normative) Method for the determination of areas
    of unbonded reinforcing facings
B. (normative) Method for the determination of
    dimensional stability in built-up roofing: roll and
    pour test
C. (normative) Method for the determination of
    dimensional stability in built-up roofing:
    temperature cycling test
D. (normative) Method for the determination of
    delamination strength in built-up roofing
E. (informative) Information for users and designers
F. (normative) Method for the determination of cohesive
    strength of roofboards
G. (informative) Burning characteristics of PUR and
    PIR foams and recommendations regarding their use
H. (informative) Information on the installation of
    roofboards into built-up roofs
Tables
1. Designation codes for thermal conductivity
2. Additional properties
3. Dimensional tolerances for lengths, widths and
    diagonals
4. Thickness tolerances
D.1 Stressing rates for method 2
E.1 Relationships between roofboard thickness and metal
    deck trough openings
Figures
A.1 Determination of area(s) of unbonded facings: cutting
    and marking of the test specimen
B.1 Marking pattern for test specimens used in the method
    described in annex B
D.1 Typical experimental arrangement for the delamination
    test: high rate of loading
List of references

Specifies requirements for the composition, construction, dimensional tolerances, designation, and physical properties of two types of polyurethane (PUR) and polyisocyanurate (PIR) foam cored thermally insulating laminated board (roofboards) with auto adhesively bonded reinforcing facings and cores not less than 20 mm thick, for use in roofs under built up bituminized felt roofing materials. Coverage includes designation and marking. Also includes annexes, tables and diagrams.