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Wall Underlay (SOLITEX EXTASANA)
Description

SOLITEX EXTASANA is a synthetic flexible wall underlay designed for New Zealand conditions, produced in Germany, and exceeds all of the testing standards of E2/AS1 Table 23. The product consists of a non-porous water resistant film laminated between two layers of spun-bonded polypropylene and is coloured blue on the top surface and grey on the bottom surface.

Complementary Components:

  • TESCON EXTORA is used to seal the overlaps
  • TESCON EXTOSEAL Sill Tape — one piece flexible Sill Tape for window and door openings
  • KAFLEX / ROFLEX Weathertight sealing grommets for cables and pipes that penetrate the membrane
  • ORCON Multi-purpose liquid adhesive for connections to rough and / or porous surfaces

SOLITEX EXTASANA roll sizes 1.50m (54.75sqm) and 2.74m (100sqm) wide and 36.5m long

Key Features
  • High performance monolithic nonporous membrane
  • High water resistance — water column more than 10,000 mm 
  • Low vapour resistance — MVTR lower than 0.75 MNs/g with active humidity transport
  • High durability under all conditions — unaffected by wood preservatives
  • Thermostable — above 100°C
  • UV stabilised — can be exposed to the New Zealand elements for 90 days
  • Air Barrier — can be used as an Air Barrier as per NZS2295:2006 and NZBC E2/AS1 Table 23
  • Surface weight 140 g/m²
Scope of Use

Has been assessed for use as a flexible wall underlay on timber framed buildings within the following scope:

  • the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1; and,
  • with absorbent wall claddings directly fixed to framing; and,
  • with non-metallic, non-absorbent wall claddings directly fixed to frame; and,
  • with absorbent and non-absorbent wall claddings installed over an 18 mm minimum drained cavity; and,
  • with masonry veneer in accordance with NZBC Acceptable Solution E2/AS1; and,
  • situated in NZS 3604:2011 Wind Zones up to, and including ‘Very High’.

Has been assessed for use as a flexible wall underlay on 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 absorbent and non-absorbent wall claddings installed over an 18 mm minimum drained cavity; and,
  • with masonry veneer in accordance with NZBC Acceptable Solution E2/AS1; and,
  • situated in NZS 3604:2011 Wind Zones up to, and including ‘Very High’.

Has been assessed for use as a flexible wall underlay over rigid wall underlays on timber and steel framed buildings within the following scope:

  • the scope limitations of NZBC Acceptable Solution E2/AS1 (August 2011), Paragraph 1.1 with regards to building height and floor plan area; and,
  • with absorbent and non-absorbent wall claddings installed over an 18 mm minimum drained cavity; and,
  • with masonry veneer in accordance with NZBC Acceptable Solution E2/AS1; and,
  • situated in NZS 3604:2011 Wind Zones up to and including ‘Extra High’
Limitations on Use

Product specification and incorporation of the SOLITEX EXTASANA Wall Underlay into the building design shall be carried out by a designer / architect / engineer or a building professional who:

  • Is qualified to design the buildings covered under the 'Scope' of use of this product.
  • Has ready access to the relevant technical specifications, NZBC, Standards, details and other information related to the installation method, including the current version of the Pro Clima NZ Limited Installation Guide for SOLITEX EXTASANA as noted within this Certificate.
NZS 3604 Wind Zone Very High suitable
Very High Wind Zone
Statement of Building Code Compliance

If used, designed, installed and maintained in accordance with the statements and conditions of the Installation Guide and the Codemark Certificate, 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. meets these requirements.
  • Clause E2 EXTERNAL MOISTURE: Performance E2.3.2. When used as part of the cladding system, will contribute to meeting this requirement.
  • Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1. Meets this requirement and will not present a health hazard to people.
In-Service History

Used in:

  • Te Uru Taumatua — Living Building Challenge 
  • Unitec, Weltec and Toi Ohomai student-built homes
  • Habitat for Humanity
  • Housing New Zealand
Other Performance Attributes
  • Water column: > 10,000 mm
  • UV stability and outdoor exposure: 90 days
  • Temperature resistance: -40 °C to +100 °C
  • Air Barrier - can be used as an Air Barrier as per NZS2295:2006 and NZBC E2/AS1 Table 23
  • Membrane: monolithic TEEE film, waterproof, non-porous, diffusion open MVTR-value: < 0.75 MNs/g
B2 Durability compliant
Durability
E2 External Moisture compliant
External Moisture
F2 Hazardous Building Materials compliant
Hazardous Building Materials
CodeMark
CodeMark
Literature
Product Assurance
CodeMark Certificate
Installation Instructions
Material Safety Data Sheet
Specification Clause (Masterspec)
Other Literature
Certificate of Installation
NZ Study on Airtightness and Moisture Management
Overview: TDS, install, accessories
Price List
Red List Free Product List
Request a visit from a Pro Clima Technical Expert
CAD/PDF Details
W1131 Skillion Eave Detail
W3111 Wall Timber Framing Detail Typical vertical 90mm wall section with 45mm service cavity
W4211 Door / Window Joinery Aluminium Head Detail Typical vertical 90mm wall - Window head detail with 45mm service cavity
W4211 Door / Window Joinery Aluminium Head Detail Typical vertical 90mm wall - Window head detail with 45mm service cavity
W4221 Door / Window Joinery Aluminium Jamb Detail Typical vertical 90mm wall - Window jamb detail with 45mm service cavity
W4222 Door / Window Joinery Aluminium Jamb Detail Typical vertical 140mm wall - Window jamb detal, Direct fixing
W4231 Door / Window Joinery Aluminium Sill Detail Typical vertical 90mm wall - Window sill detail with 45mm service cavity
W4232 Door / Window Joinery Aluminium Sill Detail Typical vertical 140mm wall - Window sill detail, Direct fixing
W1311 Warm Roof Detail Barge - Plattformframing
W1312 Warm Roof Detail Parapet - Balloonframing

Pro Clima are a leading manufacturer of air and weather tightness patented building systems, providing healthy, energy efficient and sustainable environments.

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