Strataflex is designed for internal and external waterproofing applications under a variety of floor finishes in residential, commercial, and public buildings. It is suitable for use in wet areas such as bathrooms, showers, laundries, and kitchens, as well as exterior decks, balconies, and podiums when protected by an appropriate trafficable finish.

The membrane is compatible with a wide range of stable substrates including in‑situ and precast concrete, plywood, cement board, gypsum underlay, lightweight concrete, terrazzo, and existing ceramic tile. It functions as both a waterproofing layer and a crack isolation membrane, bridging existing substrate cracks up to 3 mm and preventing reflective cracking in the finished surface.

Strataflex resists moisture vapour transmission (MVT) and is suitable for projects where substrate moisture control is critical, such as ground‑floor slabs, suspended concrete floors, and environments subject to high humidity. It allows same‑day installation of tile or other floor coverings, supporting rapid project turnaround.

When installed in accordance with NAC installation instructions and BRANZ Appraisal 519, Strataflex meets the requirements of NZBC Clause E2 External Moisture, Clause E3 Internal Moisture, and Clause B2 Durability, delivering long‑term waterproofing performance across all New Zealand climate zones.

• Strataflex must be installed in accordance with NAC installation instructions and BRANZ Appraisal 519 to achieve NZBC compliance.
• Not designed for permanent UV exposure, and must be covered by a suitable floor or deck finish such as tile, stone, vinyl, or timber.
• Not suitable for substrates with active structural movement beyond its 3 mm crack‑bridging capacity.
• Must not be applied over contaminated, oily, or dusty substrates, all surfaces must be clean, dry, stable, and properly primed with NAC Primer.
• Incompatible with unreinforced timber, particle board, or dimensionally unstable substrates without additional preparation or underlayment.
• Not intended for use in areas subject to continuous negative hydrostatic pressure without additional waterproofing design.
• Requires proper detailing at junctions, penetrations, and perimeters using compatible sealants and accessories to maintain a continuous waterproof barrier.
• Installation temperatures must be within manufacturer’s specified range to achieve optimal bond strength and seam performance.

Strataflex Waterproofing Sheet Membrane is BRANZ Appraised (Certificate No. 519, 2024) as an internal and external waterproofing system, meeting the performance requirements of the New Zealand Building Code (NZBC). When installed in accordance with NAC installation instructions and the scope of BRANZ Appraisal 519, Strataflex complies with:

• NZBC Clause E2 External Moisture – provides a continuous watertight barrier beneath tiled, stone, vinyl, timber, and other flooring finishes in exterior wet areas such as balconies, decks, and podiums
• NZBC Clause E3 Internal Moisture – prevents water penetration in interior wet areas such as bathrooms, laundries, and kitchens
• NZBC Clause B2 Durability – delivers a minimum 15‑year service life in wet area applications when protected by an appropriate floor or deck covering
• NZBC Clause F2 Hazardous Building Materials – safe for use in occupied spaces as it is solvent‑free and low VOC

Strataflex also functions as a crack isolation membrane, bridging existing cracks in the substrate up to 3 mm, and provides moisture vapour transmission (MVT) resistance to protect floor finishes from moisture‑related damage.

Strataflex Waterproofing Sheet Membrane has been widely used in the New Zealand market and has been tested and is compatible with Technokolla tiling, flooring and waterproofing systems. It is trusted by architects, waterproofing contractors, and tilers for use in both residential and commercial projects where long‑term moisture protection and crack isolation are critical.

The system has been successfully installed in apartments, bathrooms, kitchens, commercial kitchens, shopping malls, hospitality venues, and high‑traffic public facilities. Internationally, Strataflex has a proven track record across North America, Europe, and Australasia in projects ranging from multi‑storey developments and retail fit‑outs to luxury resorts and large‑scale waterproofing upgrades.

Its BRANZ Appraisal (No. 519, 2024) provides assurance to councils and building certifiers, ensuring it is widely accepted for PS3 sign‑off in projects requiring NZBC E2/E3 compliance. The product’s ability to deliver same‑day tile installation, combined with permanent adhesion and crack isolation performance, has made it a preferred choice in fast‑track construction and refurbishment projects.

Strataflex functions as both a waterproofing barrier and a crack isolation membrane, bridging substrate cracks up to 3 mm to prevent reflective cracking in finished surfaces. Its elastomeric composition allows it to accommodate thermal movement and substrate deflection without loss of adhesion or waterproofing integrity.

The membrane provides moisture vapour transmission (MVT) resistance, protecting floor coverings such as tile, stone, vinyl, timber, and laminate from moisture‑related damage. Its self‑adhering design creates a continuous, fully bonded installation that eliminates water migration between the membrane and substrate.

Strataflex’s 50 mm (2”) double‑stick lap joint creates a redundant waterproof seal at all seams, enhancing system durability in high‑moisture and high‑traffic environments. Once installed, it allows same‑day tile or floor covering application, reducing project timelines and labour costs.

It is solvent‑free and low‑VOC, making it safe for use in enclosed or sensitive environments such as schools, hospitals, and aged‑care facilities. The membrane’s high tensile strength and puncture resistance make it suitable for areas subject to regular load impacts, wheeled traffic, or heavy equipment.