Manufactured using a single layer of black polyethylene, Supercourse 500 is tough, high-impact and tear-resistant. It is a suitable moisture impermeable alternative to bituminous DPC.
Scope of use
- Supercourse 500 is intended for use as a damp-proof course separating timber and wood-based products and metal from concrete, masonry elements or clay bricks.
- Can also be used to separate timber jack studs or bearers from concrete or timber piles.
- Supercourse 500 can be used as a concealed flashing in masonry veneer walls.
- Unaffected by LOSP or other solvent-based treated timber. However, LOSP or other solvent-based treated timber must have sufficient time for the solvent chemicals to flash off in a well-ventilated area. Recommended minimum 7 days.
- Maximum weather or UV exposure in 30 days.
- Supercourse 500 is NOT a window flashing tape and NOT a thermal break product.
When Supercourse 500 is used and installed as a damp-proof course and/or concealed flashing behind masonry veneer walls, the product will meet or contribute to meeting the following provisions of the NZBC:
- Clause B2 Durability: Performance B2.3.1 (a), 50 years and B.2.3.2.
- Clause E2 External Moisture: Performance E2.3.2 and E2.3.3. When used as flashing as part of a masonry veneer cladding system, Supercourse 500 will contribute to meeting the requirement of E2.3.2. When used as a damp-proof course, Supercourse 500 will meet the requirements of E2.3.3.
- Clause F2 Hazardous Building Materials: Performancee F2.3.1. Supercourse 500 meets this requirement and will not present a health hazard to people.
More details can be found in Supercourse 500 BRANZ Appraisal 329 (2022).
Supercourse 500 is expected to have a serviceable life in excess of 50 years when it is:
- Installed in accordance with Thermakraft's literature and BRANZ Appraisal.
- Not over exposed to the weather or UV (not more than 30 days).
- Never exposed to chemicals or solvents that will degrade or affect polyethylene material.