Johns Manville is widely recognised as one of the world’s foremost suppliers of single ply roofing membrane, Allco has selected the JM TPO for our Cold Roof solution due to its superior UV and Ozone resistance and its impressive environmental credentials. It is a lightweight and cost effective solution that lends itself to most flat roof applications including commercial and residential projects. With warranties from 15-25 years make, your next roof a JM cool roof.
SCOPE OF USE & LIMITATIONS
Allco supply the JM TPO Cool Roof Solution for use within the following
Scope:Designed, specified and installed in accordance with all Allco documentation.
In wind zones:
• Up to and including Extra High as defined by NZS-3604:2011.
• Where specifically designed up to (ULS) 3.0kPa.
In all climate zones as defined by NZS-3604:2011.
On new buildings that have been designed and constructed to comply with the NZ Building Code (NZBC), particularly B1 (structure) as it relates to the construction of the substrate and substrate framing and E2.3.1 (surface water run off) as it relates to the shedding of water. On existing buildings where the designer and applicator have ascertained that the existing building is suitable for the intended building work.
On the following substrates that incorporate a slope between 1.150 (1:50) 2.30 - 1.150 (1:25), or gutters at with a 0.5° (1:100) fall:
• H3.2, CCA treated structural plywood
• In situ reinforced concrete
• Pre-fabricated concrete panels
In conjunction with a drainage system, providing the rainwater flows to
An outlet that complies with the NZBC
B1 Structure (complies with)
B1.3.3 (a), (b), (c), (e),
(f), (g), (h), (I), (m), (o),
(p) & (q)
B1.3.4 (b), (c), (d), (e)
B2 Durability (complies with)
B2.3.1 (b), 15 years
E2 External Moisture (contributes to)
E2.3.7 (b) & (c)
Building Materials (complies with)
The JM TPO Cool Roof Solution is a system that must be designed and
installed specific to the building project. The design of the system requires
the selection of all components applicable to the project.