This system is suitable for external floor tile installations in both residential and commercial projects. It is recommended for use on balconies, patios, terraces, façades, and other outdoor hardscape areas.

Compatible with a wide range of tile types, including ceramic and porcelain.

Rasolastik Waterproofing Membranes have been BRANZ Appraised for use as waterproofing membranes in the following applications:

• Buildings within the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1
• Timber-framed structures designed and constructed in accordance with the NZ Building Code (NZBC)
• Substrates including plywood and fibre cement compressed sheet
• Decks with a maximum area of 40m²

Rasolastik Waterproofing Membranes are also approved for use as waterproofing membranes over external reinforced concrete pedestrian decks and balconies for buildings within the following scope:

• Up to 3 storeys high, with a maximum height from ground to eaves of 10 metres
• Floor plan areas limited only by seismic and structural control joints
• Reinforced concrete designed and constructed in accordance with the NZBC

For full details on scope, limitations, and compliance, refer to BRANZ Appraisal 541.

• A minimum grout joint width of 4 mm is recommended to accommodate movement and ensure proper sealing.
• Expansion joints must be installed at intervals of no more than 9 m² to manage thermal and structural movement.
• Waterproofing membranes must be applied only by Surtec (Trade Supplies Ltd) approved and trained applicators to ensure system integrity and compliance.

For full details on limitations and compliance requirements, refer to BRANZ Appraisal 541.

In the opinion of BRANZ, TECHNOKOLLA Rasolastik Exterior Waterproofing Membranes, when designed, installed, used, and maintained in accordance with the statements and conditions of BRANZ Appraisal No. 541, will meet the following provisions of the New Zealand Building Code (NZBC):

• Clause B2 Durability — Performance B2.3.1(b): 15 years
  TECHNOKOLLA Rasolastik Exterior Waterproofing Membranes comply with this requirement.
• Clause E2 External Moisture — Performance E2.3.1 and E2.3.2
  Decks and balconies incorporating TECHNOKOLLA Rasolastik Exterior Waterproofing Membranes comply with these requirements.
• Clause F2 Hazardous Building Materials — Performance F2.3.1
  TECHNOKOLLA Rasolastik Exterior Waterproofing Membranes meet this requirement as they are not classified as hazardous building materials.

Refer to BRANZ Appraisal 541 for the full scope of use, limitations, and compliance conditions related to external wet area applications.

Technokolla was founded in 1995 in Sassuolo, Italy, and has been supplying its waterproofing & tiling systems internationally since the late 1990s, including New Zealand.

Notable projects include:

• JW Marriott, Auckland
• Novotel Christchurch
• Albany Lakes, mixed use development, Auckland
• Milford Apartments, Auckland
• Metlifecare, Auckland
• Loxley Apartments, Auckland
• Rarotongan Resort, Rarotonga, Cook Islands

• BRANZ Appraised — Assessed and approved under BRANZ Appraisal No. 541 for external waterproofing applications including decks, balconies, and terraces.
• Tested and compliant with the following standards:
  • EN 14891 (waterproofing membranes under tile finishes)
  • EN 12004 (tile adhesives)
  • EN 13888 (grouts)
  • EN 13813 (screeds and self-levelling compounds)
• Service Life — Minimum 15-year service life when installed and maintained in accordance with Technokolla system guidelines and NZ Building Code requirements.
• Low VOC & Indoor Air Quality — Products used in the system are formulated with very low VOC emissions and have achieved the EUROFINS Indoor Air Comfort GOLD A+ rating, meeting leading international standards for healthy indoor environments.
• UV and Weather Resistance — Exterior-grade membranes engineered for long-term exposure to New Zealand’s harsh weather conditions, including UV.
• Movement Accommodation — Low-modulus, deformable adhesives and grouts designed to absorb thermal and structural movement common in outdoor environments.
• System Compatibility — Fully integrated system including Technokolla adhesives, grouts, waterproofing membranes, and levelling compounds, all developed to work together for consistent performance and durability.

Warranty

The Technokolla External Waterproofing and Tiling System is backed by a 15-year product warranty when installed by an approved applicator in full accordance with Surtec and Technokolla installation guidelines. The warranty covers the performance of the system components, including waterproofing integrity, adhesive bonding, and overall compatibility when used as part of the complete Technokolla system.

To maintain warranty validity:

• The membrane must be fully protected by tile or stone finishes
• All movement joints and detailing must follow Technokolla system specifications
• Routine inspections must be carried out as part of standard building maintenance
• Any damage or alteration must be repaired using approved Technokolla products and methods
• The installation must comply with the New Zealand Building Code and BRANZ Appraisal No. 541

This warranty applies to product performance only and does not cover workmanship.

Warranty documentation and project registration are available upon request. Registration is strongly recommended to ensure priority technical support and claim resolution.