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300mm x 30m Supercourse 500 DPC

  • Pack Quantity: 6
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Supercourse 500 is a general damp-proof course (DPC) used to prevent moisture transfer between building materials. It is also used as a concealed flashing for masonry veneer cladding.

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.


Attribute 1 300mm