Central Fire Station
Standard Flat Roof System

Wellington Fire Station Roof

ArchitectDLA Architects
ContractorHawkins Construction
Size900m2
Specification2X10mm of roofing with Solar reflective coating
Year2014

Scope

The New Zealand fire service were looking for a Hard wearing foot trafficable membrane that was able to withstand firemen carrying out training drills on the roof of the fire station. The existing roof had limited fall so therefore once again mastic asphalt was chosen due to its monolithic capabilities that would not impede water flow like sheet membranes. Also sheet membranes are not trafficable like mastic asphalt.

Solution

Pacoflex Mastic Asphalt was then selected for the re-roofing of the Historic Wellington Fire station roof. The solution was to have 2 layers of mastic asphalt roofing grade totalling 25mm thick. The first layer would be laid at 10mm thick. The second layer would be laid at 15mm thick, this layer would have an added 3mm course aggregate at 15mm-20mm thick. The addition of aggregate therefore increases the stability of the membrane for foot traffic. On completion the installation the roof would be coated in Purflect solar reflective paint.

Asphaltech and their qualified tradesmen were intrusted to carry out the installation of the mastic asphalt to 900m2 of the roof, detailing complex shapes and advising on design throughout the project.

"George Griffiths personally supervises his small team, who all work to highly professional standards ensuring that the exacting detailing required by the Museum's heritage architects is always met or exceeded. "
JOHN GLEN, Auckland Museum Facilities Manager // AUCKLAND WAR MEMORIAL MUSEUM
"Mastic asphalt has a long life span of 60 years (source RICS). Fully recyclable, it has a low impact on the environment. Benefits of mastic asphalt are its durable, waterproof, voidless and self compacting."
Pure Asphalt Company Limited – UK