Underlay Suitability
Underlay Suitability
Underlay Suitability
| Roof Underlay (R1, R2) | Wall Underlay (W2, W4) | |
| Absorbency g/m2 Permeability g/m2/day Vapour transmission resistance (1/p) pH Water resistance mm head Max length m Side and end laps mm | 140 36 ≥13MNs/g 5.5.-.8.0 > or = 100mm 10/7(FR)* 150 | 100 26 ≥5MNs/g 5.5.-.8.0 > or = 20mm** 10/7(FR)** 100 |
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Clause Number:
11.5.1A
/cop/roof-ventilation/underlay#types-underlay+underlay-suitability
Revision Category:
0 - Clause Removed
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