Masons VHP Maxi Roof Underlay

Product Description

VHP Maxi Roofing Underlay is a 220gsm premium roofing underlay. It is fire retardant, very high performance and highly breathable.

Manufactured from synthetic multi-laminate spun-bonded, non-woven polypropylene membranes it has the following benefits:

• Premium performance and fire retardant
• Assists in moisture control - deflects water and air both during construction and as part of the finished roof
• Affordable
• Self-supporting and very strong
• Highly breathable - transforms water vapour at higher rates than bitumen impregnated paper
• Temporary weather protection - UV resistance for 21 days
• Codemark Certified 

Intended Use

Masons Roof Underlays are for use as a self-supporting roofing underlay

NZ Building Code Provisions

• B2 Durability: B2.3.1(a), B2.3.2 
• C3 Fire affecting areas beyond the fire source: C3.4(c) 
• E2 External moisture: E2.3.1; E2.3.2 (Contributes to) 
• F2 Hazardous building materials: F2.3.1