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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

News from Marshall Innovations

Marshall Innovations Weatherization System Simplifies the Design Process
Exterior Cladding System Design for Weathertight Medium Density Housing
Tekton High Performance Flexible Wall Underlay and Air Barrier
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