This system is suitable for tiled & plastered swimming pool installations in both residential and commercial projects, including spas, plunge pools, water features, and submerged wet zones. It is engineered to perform in fully immersed environments where long-term waterproofing, flexibility, and bond strength are critical.

Compatible with a wide range of tile & plaster finishes, including ceramic, porcelain, mosaics, and natural stone.

Rasolastik Waterproofing Membranes have been BRANZ Appraised for use as waterproofing membranes in swimming pool and submerged applications when applied over approved concrete substrates.

These membranes are suitable for use in:

• Reinforced concrete swimming pools and spas, both indoor and outdoor
• Tiled pool shells, plunge pools, and water features requiring full submersion
• Residential and commercial pools, including pools in hotels, leisure centres, and multi-residential developments
• Projects where waterproofing performance under hydrostatic pressure, chlorine exposure, and thermal cycling is essential

Rasolastik membranes comply with the New Zealand Building Code (NZBC) and have been tested in accordance with BRANZ Appraisal No. 541.

They provide excellent adhesion to properly prepared concrete substrates designed and constructed in line with NZBC requirements.

For full details on scope, limitations, and compliance, refer to BRANZ Appraisal No. 541.

• A minimum grout joint width of 4mm is recommended in swimming pool applications to accommodate movement and ensure proper sealing between tiles.
• Assessing the substrate is essential before any tiling work begins.
• Use flexible adhesives and grouts that can withstand continuous submersion in alkaline environments.
• Select waterproofing products that offer long-term durability and are resistant to ageing or degradation over time.
• Always review the data sheets for the chosen tile or stone to confirm any limitations of use.
• Waterproofing membranes must be applied only by Technokolla approved and trained applicators to ensure system integrity, warranty eligibility, and full compliance with the installation specification.
• For full details on limitations, scope, and compliance requirements, refer to BRANZ Appraisal No. 541.

In the opinion of BRANZ, TECHNOKOLLA Rasolastik 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) as they apply to swimming pool applications:

• Clause B2 Durability — Performance B2.3.1(b): 15 years
  TECHNOKOLLA Rasolastik Waterproofing Membranes comply with this durability requirement, providing long-term protection in fully submerged environments such as swimming pools and spas.
• Clause E2 External Moisture — Performance E2.3.1 and E2.3.2
  When used in swimming pool structures, TECHNOKOLLA Rasolastik Waterproofing Membranes meet these performance requirements by preventing water ingress and maintaining watertight integrity under hydrostatic pressure.
• Clause F2 Hazardous Building Materials — Performance F2.3.1
  TECHNOKOLLA Rasolastik Waterproofing Membranes comply with this provision as they are not classified as hazardous building materials.

Refer to BRANZ Appraisal No. 541 for the full scope of use, compliance conditions, and limitations as they apply to waterproofing systems for swimming pools and submerged areas.

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
• Milford Apartments, Auckland
• Rarotongan Resort, Rarotonga, Cook Islands
• 100s of residential swimming pools across NZ

• BRANZ Appraised – Assessed and approved under BRANZ Appraisal No. 541 for waterproofing applications, including swimming pools, spas, and other permanently submerged areas, when installed over reinforced concrete substrates in accordance with Technokolla system guidelines.
• Service Life – Provides a minimum 15-year service life when installed and maintained in line with the Technokolla specification and New Zealand 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 global benchmarks for safe and healthy air quality.
• Tested and compliant with the following standards:
  • EN 14891 – Waterproofing membranes beneath tile finishes in wet environments
  • EN 12004 – Tile adhesives
  • EN 13888 – Grouts
  • EN 13813 – Screeds and self-levelling compounds
• Chemical & Water Resistance – Membranes and adhesives are engineered to withstand hydrostatic pressure, chlorine exposure, and continuous immersion in submerged environments such as pools and water features.
• UV and Weather Resistance – Exterior-grade membranes are suitable for outdoor pool environments and exposed areas subject to New Zealand’s harsh UV and weather conditions.
• Movement Accommodation – flexible, deformable adhesives and grouts are used to absorb structural and thermal movement common in pool environments, particularly with mosaic and stone finishes.
• System Compatibility – A fully integrated system including Technokolla adhesives, grouts, waterproofing membranes, and levelling/smoothing compounds, all designed to work in unison for consistent long-term performance.

Warranty

The Technokolla Swimming Pool 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 all system components, including waterproofing integrity, adhesive bonding, and overall system compatibility when used as part of the complete Technokolla system.

To maintain the validity of this warranty:

• The waterproofing membrane must be fully protected by plaster, ceramic, porcelain, mosaic, or stone tile finishes
• Routine inspections must be undertaken as part of standard building and pool maintenance
• Any damage, alteration, or repair must be carried out 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 efficient claim resolution.