Appraised (BRANZ Appraisal 989) for use: 

• Over rigid wall underlays
• Over rigid roof sarking
• Over roofs and walls of SIP and CLT construction
• Specific Design

Use over Rigid Wall Underlays: 

SOLITEX EXTASANA ADHERO Self-Adhesive Underlay has been appraised for use as a wall underlay over fibre cement and plywood rigid wall underlays on timber and steel framed buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regards to building height and floor plan area; and
• with direct fixed absorbent and non-absorbent wall claddings; or
• with absorbent and non-absorbent wall claddings installed over an 18 mm minimum drained cavity; or,
• with masonry veneer in accordance with NZBC Acceptable Solution E2/AS1 for timber framed buildings or to a specific design for steel framed buildings; and
• situated in NZS 3604 Wind Zones up to and including Extra High

Use over Rigid Roof Sarking:

SOLITEX EXTASANA ADHERO Self-Adhesive Underlay has also been appraised for use as a roof underlay over plywood roof sarking on timber and steel framed buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regards to building height and floor plan area; and
• with roof claddings in accordance with NZBC Acceptable Solution E2/AS1, Paragraphs 8.1 – 8.4; and
• situated in NZS 3604 Wind Zones up to and including Extra High

Use over Roofs and Walls of SIP and CLT Construction:

SOLITEX EXTASANA ADHERO Self-Adhesive Underlay has also been appraised for use as a wall and roof underlay when used on buildings within the following scope: p

• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regards to building height and floor plan area; and
• used on buildings constructed from Structural Insulated Panels (SIPs); or
• used on buildings constructed of Cross Laminated Timber (CLT); and
• with absorbent and non-absorbent wall claddings installed over an 18 mm minimum drained cavity; or,
• with masonry veneer to a specific design for SIP or CLT buildings; and,
• with roof claddings in accordance with NZBC Acceptable Solution E2/AS1, Paragraphs 8.1 - 8.4; and,
• situated in NZS 3604 Wind Zones up to and including Extra High. (Note: CLT and SIP construction systems have not been assessed and are outside the scope of this Appraisal. See also Paragraph 7.12.)

Specific Design:

SOLITEX EXTASANA ADHERO Self-Adhesive Underlay has also been appraised for use over rigid wall underlays or roof sarking on buildings subject to specific weathertightness design. Building designers are responsible for the building design and for the incorporation of SOLITEX EXTASANA ADHERO® Self-Adhesive Underlay into their design in accordance with the declared properties and the instructions of Pro Clima (NZ) Ltd.

• 180 days maximum exposure
• Allow LOSP treatment to flash off prior to install (generally 1 week)

SOLITEX EXTASANA ADHERO Self-Adhesive Underlay, if used, designed, installed and maintained in accordance with the statements and conditions of BRANZ Appraisal 989, will meet, or contribute to meeting the following provisions of the NZBC:

• Clause B2 DURABILITY: Performance B2.3.1 (a), not less than 50 years, B2.3.1 (b), 15 years and B2.3.2. SOLITEX EXTASANA ADHERO Self-Adhesive Underlay meets these requirements. See Paragraphs 9.1 and 9.2. e
• Clause E2 EXTERNAL MOISTURE: Performance E2.3.2. When used as part of the roof or wall cladding system, SOLITEX EXTASANA ADHERO Self-Adhesive Underlay will contribute to meeting this requirement. See Paragraphs 12.1 and 12.2.
• Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1. SOLITEX EXTASANA ADHERO Self-Adhesive Underlay meets this requirement and will not present a health hazard to people.

• Xlam panels pre-finished in the factory with ADHERO (CLT)
• NZSIP panels pre-finished in the factory with ADHERO (SIP)