Flat Roof

Where Asphaltech mastic asphalt is required as a roofing surface only with little or no traffic, it is laid in two coats to a nominal thickness of 20mm. The first coat is laid to a thickness of 10mm and the second coat 10mm. It is applied in a liquid form and spread out to form and homogeneous surface which whilst liquid can be formed to any shape or surface as required. It can then be protected by a solar reflective UV resistant paint.

  1. Solar paint colours (white, grey, green) 0.4kg/m2
  2. Asphaltech mastic asphalt 20mm thick (2X10mm coats) 42.92Kg/m2
  3. Separation layer 3mm thick 1.9kg/m2
  4. Concrete deck
20 Year System Guarantee

Mastic Asphalt is the ultimate flat roofing system and has been used extensively over hundreds of years. It has stood the test of time, protecting many of New Zealand’s most prestigious buildings.

Pacoflex Mastic Asphalt is recognized for its durability and effectiveness as a waterproofing system. It is suitable for potable water use and can be finished in a range of colours.

  • Monolithic, an aesthetic seamless finish
  • Unbonded, allowing movement between structure and materials
  • Can be laid at falls lower than 1.80
  • A properly designed & installed mastic asphalt system will last 60 years
  • Traditional mastic asphalt but with added polymers to improve flexibility & durability
  • With 20 years warranty for supply and installation
  • All in accordance with ISO 9001:2008

Mastic Asphalt Systems

Flat Roof

Cast concrete up stand detail

With over 100 years of use in New Zealand the Asphaltech Mastic Asphalt System It has stood the test of time, protecting many of New Zealand’s prestigious buildings.

The Asphaltech Polymer Modified Mastic Asphalt (asphalt composed of suitable graded mineral matter and asphaltic cement in such proportions as to form a cohesive, impermeable mass) is recognised for its durability and effectiveness as a waterproofing system.

The Asphaltech Mastic Asphalt System gained CodeMark certification in March 2018, making it NZ’s first zero-degree CodeMark certified system for inverted, flat roof and podium deck roofs. The CodeMark certification gives designers assurance that the system can be used where the minimum gradient of the substrate structure can be if required completely flat (less than 1:80), including nominally zero pitch. It is suitable for potable water use and can be if desired, finished in a range of architectural colours.

Flat Roof Systems Overview Video

Flat Roof System

Victoria St West Auckland

Victoria St West Auckland