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Tekton Flexible Wall Underlay

Tekton Wall Underlay is a synthetic breather-type layer for use as a wall underlay and air barrier under direct and non-direct fixed wall cladding on timber and steel framed buildings.

Key Features
  • Tekton Wall Underlay can be installed as an air barrier to walls that are not lined, such as gable ends
  • Superior water hold out — keeping framing drier while permanent cladding is installed.
  • 50 year durability
  • Can be left exposed for up to 60 days
  • Optimal surfactant resistance — will not lose integrity if exposed to most soaps, detergents, and cleaning chemicals
  • BRANZ Appraised #548 [2013]
  • Can be used as a non-rigid backing material for stucco plaster, and as a slip-layer over rigid backing for stucco plaster
  • Compatible with metal cavity battens
Scope of Use
  • Tekton Wall Underlay can be used in all wind zones up to and including Very High, and with RAB Systems, Extra High
  • Tekton Wall Underlay is fire retardant with a zero flammability index and can be used without restriction on all buildings, however must be separated from fireplaces, heating appliances, flues and chimneys in accordance with the NZBC.
  • Tekton Wall Underlay can be left exposed for up 60 days
Limitations on Use

Tekton Flexible Wall Underlay is a key component of the complete 'Marshall Weatherization System' which is designed for complete (Secondary) building envelope weathertight protection.  Tekton is designed for use with Marshall Innovations' 'Super-Stick' flexible flashing tape (for Window/ Door openings), 'Trade-seals' (for service pentrations), 'Seam Tape' (for wrap joins) + HYDRA (Roof Underlay).

NZS 3604 Wind Zone Extra High suitable
Extra High Wind Zone
NZS 3604 Wind Zone Very High suitable
Very High WInd Zone
Statement of Building Code Compliance
  • Clause B2 — Durability
  • Clause E2 — External Moisture
  • Clause F2 — Hazardous Building Materials
In-Service History

Tekton has been available for use in New Zealand since early 2000s, and has been used in a large variety of projects, including single and mulit-unit residential, townhouses and apartments, healthcare and aged care facilities, and commercial buildings. 

BRANZ Appraised
BRANZ Appraised
BRANZ Appraisal: Tekton Building Wrap

548 [2019]

BRANZ Appraisal: Weatherization System

621 [2020]

Additional Information

Marshall Innovations provide weathertight solutions from below ground to pre-cladding.

Product Enquiries

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