Auckland College Gets Long-Lasting Waterproof Finish with Viking Bituclad

The Challenge

A new block of classes was being built at a learning institution in Auckland. The institution was seeking a watertight roofing system to protect its 3,000m² footprint.

The Solution

The architect had extensive experience using Viking Bituclad on previous projects and was confident in specifying the two-layer membrane torch-on for this project as well. Not only was it a membrane the architect had faith in, but the comfort of its accompanying BRANZ Appraisal, CodeMark Certificate and substantial product warranty provided added assurance and weight to his decision.

The system consists of a 3mm thick base sheet and 4mm thick mineral-chip cap sheet, which gives the membrane protection from UV. With both layers of the membrane being torched on, the bitumen can be carefully 'bled' into difficult areas and roof penetrations; areas susceptible to leaks. Viking Bituclad’s waterproofing integrity is further enhanced by its ability to safeguard the building from puncturing, rot and ozone.

Like any building material, the product can only function as well as it has been installed. Only Viking Approved Applicators are permitted to install Viking’s solutions, so this roof was installed by a skilled torch-on applicator with vast experience.

The Result

The use of a Viking Approved Applicator provided assurance that the college received a quality installation they could ensure was watertight. Giving further peace of mind to the college was the fact that Viking Bituclad is protected by a 20-year product warranty. In the unlikely event of a product quality issue, the college could confidently call upon Viking Roofspec to put it right.

Note: Viking Bituclad has now been replaced with three fit for purpose solutions: Viking GM Lybra, Gemini and Phoenix Super.

Viking Gemini APP TorchOn Membrane

Viking Roofspec

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Viking Gemini APP is a robust and versatile membrane system ideally suited to New Zealand's North Island (except the Central Volcanic Plateau) and the Pacific Islands.

NZ-Owned Business

Viking Gemini APP is suited to tricky / confined roofs where it can be 'bled' in to vulnerable areas such as tight corners and awkward areas susceptible to leaks such as roof penetrations, internal corners and gutter junctions.

It is suitable for low-slope roofs (flat or curved), gutters and parapets, waterproofing beneath a floating deck, inland and coastal conditions, commercial and residential buildings.

Viking Gemini APP Waterproofing Membrane has been assessed as a roof waterproofing membrane on buildings within the following scope:

The scope limitations of NZS 3604:2011 and NZBC Acceptable Solution E2/AS1, Paragraph 1.1; or,
The scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regards to building height and floor plan area when subject to specific structural design; and,
Situated in NZS 3604:2011 Wind Zones, up to and including Extra High; and,
With substrates of plywood or suspended concrete slab; and,
With a minimum fall for roofs of 1:30 (2 degrees)

Viking Gemini APP Waterproofing Membrane has also been assessed for use as a roof waterproofing membrane on buildings within the following scope:

Subject to specific structural and weathertightness design situated in wind pressures up to a maximum design differential ultimate limit state (ULS) of 6 kPa: and,
With substrates of plywood or suspended concrete slab

Clause B1 STRUCTURE: Performance B1.3.1 and B1.3.4 (b) (c) (d) (e) for the relevant physical conditions of B1.3.3 (p). Viking GM Gemini A.P.P Waterproofing Membranes meet this requirement.
Clause B2 DURABILITY: Performance B2.3.1 (b), 15 years. Viking GM Gemini A.P.P Waterproofing Membrane meet this requirement.
Clause E2 EXTERNAL MOISTURE: Performance E2.3.1, E2.3.2 and E2.3.7 (b) and (c). Viking GM Gemini A.P.P Waterproofing Membrane meets these requirements.
Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1. Viking GM Gemini A.P.P Waterproofing Membrane meets this requirement and will not present a health hazard to people.

Structure

Durability

External Moisture

Hazardous Building Materials

BRANZ Appraised

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