SOLITEX EXTASANA ADHERO® Self-Adhesive Underlay
- Appraisal number 989 (2023)
- Valid from
- Information provider
- BRANZ Limited
- Information type
- BRANZ Appraisal
SOLITEX EXTASANA ADHERO® is a self-adhesive, synthetic underlay for use over rigid wall underlays.
Use over E2/AS1 or NASH Building Envelope Solutions Rigid Wall Underlays
1. SOLITEX EXTASANA ADHERO® has been appraised for use as a flexible wall underlay when installed over fibre cement or plywood rigid wall underlays in accordance with NZBC Acceptable Solution E2/AS1 or NASH Building Envelope Solutions Paragraph 184.108.40.206 and when used on buildings within the following scope:
- the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 for timber-framed buildings; or,
- the scope limitations of NASH Building Envelope Solutions, Paragraph 1.1 for steel-framed buildings; and,
- with a risk score of 0-20, calculated in accordance with NZBC Acceptable Solution E2/AS1 or NASH Building Envelope Solutions, Table 2; and,
- with absorbent and non-absorbent direct fix wall claddings or 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 NASH Building Envelope Solutions for steel-framed buildings; and,
- situated in NZS 3604 Wind Zones up to, and including, Extra High.
Proprietary Rigid Wall Underlays
2. SOLITEX EXTASANA ADHERO® Self-Adhesive Underlay has also been appraised for use as a flexible underlay when used over proprietary rigid wall underlays. See Paragraphs 2.3 and 2.4 for substrates covered by this Appraisal. Also refer to the relevant BRANZ Appraisal for scope limitations and to the system proprietor to confirm the suitability of SOLITEX EXTASANA ADHERO® with their system.
3. SOLITEX EXTASANA ADHERO® may be used over the following proprietary rigid wall underlay systems:
- 4.5 mm HomeRAB™ Pre Cladding and 6 and 9 mm RAB™ Board – refer BRANZ Appraisal No. 611.
- Ecoply Barrier® - refer BRANZ Appraisal No. 827.
- 10 and 13 mm GIB Weatherline® - refer BRANZ Appraisal No. 1048.
4. Pro Clima NZ Ltd offer SOLITEX EXTASANA ADHERO® as a flexible roof and wall underlay for use over other construction types and substrates. (Note: This aspect has not been assessed and is outside the scope of this Appraisal. Refer to Pro Clima NZ Ltd for further information)
5. Designers are responsible for confirming the suitability of SOLITEX EXTASANA ADHERO® for their specific design when used on other construction types or buildings outside the scope of this Appraisal. (Note: These have not been assessed and are outside the scope of this Appraisal).