Technical Statement
Product Description
Scope of use
Viking Bitculad4 DPM Membrane has been appraised as a DPM for use:
- On buildings subject to non-specific design under floor slabs complying with NZS 3604 and behind concrete masonry basement walls and under floor slabs complying with NZS 4229; and,
- On buildings subject to specific design with substrates of in situ or precast concrete complying with NZS 3101 or concrete masonry complying with NZS 4230; and,
- Where subsoil drainage and free draining granular backfill has been placed behind basement walls.
Viking Bituclad4 DPM Membranes must be adequately protected against damage during backfill and in service.
New Zealand Building Code (NZBC)
The product will, if employed in accordance with the supplier's installation and maintenance requirements, assist with meeting the following provisions of the building code:
- Clause B1 Structure: Performance B1.3.1
- Clause B2 Durability: Performance B2.3.1, B2.3.1(a), B2.3.2, B2.3.2(a)
- Clause E2 External moisture: Performance E2.3.3
- Clause F2 Hazardous building materials: Performance F2.3.1
Supporting evidence
The product has and can make available the following additional evidence to support the above statements:
Product Criteria
Design requirements
Product specification and incorporation of Viking Bituclad4 Membranes into the building design shall be carried out by a designer/architect/engineer or a building professional who:
- Is qualified to design the buildings covered under the 'Scope' of use of this product.
- Has ready access to the technical specifications including installation details and standards referenced in the BRANZ Appraisal No. 864 (2014) where the design limitations are outlined for the scope of this PTS.
Accessories in the Viking Bituclad4 system include bituminous primer (20L), bituminous gum, protection boards and drainage boards. Click here to read more about Bituclad4's accessories.
Installation requirements
- Installation shall be carried out by a Viking Roofspec trained and licensed installer.
- Installation shall be undertaken in accordance with all relevant technical information related to the selected installation method, including information contained within the BRANZ Appraisal No. 864 (2014).
- Long term properties of the material may be affected by contact with petroleum-based products such as oils, greases and solvents.
Maintenance requirements
- Annual inspections must be made of the membrane's top edge seal and protection, the backfill capping, and the drainage pipe to ensure all are functioning as originally designed.
- If required, the drainage pipe must be cleared to remove any sediment or silt build-up. The slope of the backfill capping must be maintained at all times.
Warrantees
The Viking Bituclad4 system is backed by a 20-year product warranty.
Quality Assurance
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ISO 9001 (Quality Management) |
Relationships
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Member of New Zealand Green Building Council |
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BRANZ
864 |
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Date last validated:
04 May 2016 |
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Date last updated:
04 May 2016 |