VHP Maxi Roof Underlay Top Performance, Fire Retardant, Self Supporting

20％ discount for purchasing 36 rolls （1 pallet）

VHP Maxi Roof Underlay is the Top Performance, Fire Retardant, Self Supporting roofing paper

1. run vertically with support for roof pitches less than 10°, provided that support is provided where the span is greater than 1200mm, and
   c) protected from sunlight within 21 days of installation (30 days for UNI FR).

Health and Safety

The compliance with any manufacturer’s installation instructions, maintenance, OH & S statements, MSDS’s and other Health and Safety declarations will provide the necessary Health and Safety Information pertaining to the product. 

Supporting Info

VHP Maxi underlay is a 220 gsm tri-laminated sheet consisting of two outer non-woven layers which are white and a middle synthetic membrane which is dark grey. Both sides of the sheet have a fine embossing pattern. The sheet is 1.45 m wide and is labelled VHP Maxi Roof Underlay. 

Supporting Information about the Intended Use

Further details regarding the use of the product can be found in Masons Roof Underlay Installation Instructions Version 1.0, Jan 2021

Supporting Documentation for Certification:

1. Acceptable Solutions and Verification Methods For New Zealand Building Code Clause B2 Durability (Amendment 12), 28 November 2019 
2. C/AS1 VM1 Protection from fire Amendment 3
3. C/AS2 Acceptable Solution for Buildings other than Risk Group SH for New Zealand Building Code Clauses C1-C6 Protection from Fire, 1st edition, 27 June 2019
4. Acceptable Solutions and Verification Methods For New Zealand Building Code Clause E2 External moisture 3rd edition (Amendment 9), 27 June 2019
5. Acceptable Solutions and Verification Methods For New Zealand Building Code Clause F2 Hazardous Building Materials (Amendment 3), 1 January 2017
6. SCION Report QT8080A “Evaluation of Uni FR FAB to NZS 2295”, February 2020
7. SCION Report QT8222VHPM “Evaluation of Roof VHP Maxi to NZS 2295”, July 2020
8. SCION Report QT8222VHPS “Evaluation of Roof VHP Strong to NZS 2295”, July 2020
9. SCION Report QT8222VHPU “Evaluation of Roof VHP Ultra to NZS 2295”, July 2020
10. L H Boulton Report 201265 “Assessment of Masons Roofing Underlays for Buildings”, 21 October 2020
11. Masons Roof Underlay Installation Instructions Version 1.0, Jan 2021
12. NZS 2295 2295:2006 Pliable, permeable building underlays
13. NZ Metal Roof and Wall Cladding Code of Practice version 3.0