The Thermakraft One Wrap System is used behind wall cladding systems and around framed joinery openings as a secondary weather resistant barrier for walls.

System has been appraised for use a s flexible wall underlay system:

• On timber and steel framed buildings 
• Over rigid wall underlays on timber and steel framed buildings

See BRANZ appraisal for full scope

In the opinion of BRANZ, The Thermakraft One Wrap System, if designed, used, installed, and maintained in accordance with the statements and conditions of the Appraisal, will meet, or contribute to meeting the following provisions of the NZBC:

• B2 Durability: Performance B2.3.1 (a), not less than 50 years, B2.3.1 (b), 15 years and B2.3.2. the Thermakraft One Wrap System meets these requirements.
• E2 External Moisture: Performance E2.3.2. When used as part of the cladding system, Thermakraft One Wrap System will contribute to meeting this requirement.
• F2 Hazardous Building Materials: Performance F2.3.1. The Thermakraft One Warp System meets this requirement and will not present a health hazard to people.