MAXI PLUS Roof Underlay is a medium duty, tri-laminate underlay comprising outer nonwoven
layers and a central functional membrane. It is coloured blue on the front and white
on the back and is supplied in rolls of 45 m2, 1.45 m wide x 31.03 m long.
Maxi plus roof underlay is categorised in accordance with AS/NZS 4200.1 as follows:
Duty classification: Medium duty
Emittance classification: Non reflective
Conductivity: Electrically non-conductive
Water control classification: Water barrier
Vapour control classification: Vapour permeability Class 4 vapour permeable
Flammability classification: Low flammability