Description

Solitex Extasana Wall Underlay is a flexible synthetic wall underlay for use under direct fixed and non-direct fixed wall cladding on timber and steel framed buildings.

The product consists of a non-porous water resistant film laminated between two layers of non woven spun-bonded polypropylene and is coloured blue on the top surface and grey on the bottom surface.

Scope

1. Solitex Extasana Wall Underlay use is certified as flexible wall underlay for buildings:

• a. within the scope limitations of
  • i. NZBC Acceptable Solution E2/AS1, Third Edition including amendment 10 (5 November 2020), Paragraph 1.1 for timber-framed buildings; or,
  • ii. NASH Building Envelope Solutions, Paragraph 1.1 for steel-framed buildings; and,
• b. with absorbent or non-absorbent wall claddings either direct fixed or installed over an 18 mm minimum drained cavity; or,
• c. with masonry veneer in accordance with
  • i. NZBC Acceptable Solution E2/AS1 Third Edition including amendment 10 (5 November 2020) for timber-framed buildings or
  • ii. NASH Building Envelope Solutions for steel-framed buildings; and,
• d. situated in
  • i. NZS 3604;2011 and NASH Standard Part 2 Wind Zones up to, and including, Very High; or,
  • ii. NZS 3604:2011 and NASH Standard Part 2 Wind Zones up to, and including, Extra High when used
    • 1. over an 18 mm minimum drained cavity; and,
    • 2. over a rigid wall underlay in accordance with NZBC Acceptable Solution E2/AS1 Third Edition including amendment 10 (5 November 2020) or NASH Building Envelope Solutions Paragraph 9.1.7.2.

2. Solitex Extasana Wall Underlay must be installed in accordance with :

a. For timber framed buildings: SOLITEX EXTASANA® Application Guide – Timber Frame; Dated 20/04/2022 or for metal framed buildings: SOLITEX EXTASANA® Application & Fixing Guide – Light. Steel Frame; Dated 27/01/2023

3. Timber and Steel Framing: Studs must be provided at maximum 600 mm centres. Dwangs must be fitted flush between the studs at maximum 1200 mm centres.

4. Solitex Extasana Wall Underlay must not be exposed to the weather or ultraviolet light for a total of more than 180 days before being covered by the wall cladding