Waterproofing membranes

Effective waterproofing membranes are essential for protecting Auckland properties from the region’s challenging climate. With over 1200mm of annual rainfall, high humidity, coastal salt exposure, and intense UV radiation, Auckland buildings face unique environmental pressures that demand robust, professionally-installed membrane systems.

At Auckland Waterproofing Experts, we specialise in installing premium waterproofing membranes that meet New Zealand Building Code requirements and deliver long-term protection for residential and commercial properties across the Auckland region.

Auckland’s unpredictable weather patterns create specific challenges for building waterproofing. The combination of frequent heavy rainfall, coastal conditions, and temperature fluctuations can quickly compromise inadequate waterproofing systems, leading to:

Quality membrane systems provide a critical barrier against these risks, ensuring your investment remains protected for decades.

Waterproofing membranes are specialised materials that create impermeable barriers to prevent water ingress. In New Zealand, all waterproofing work must comply with Building Code clauses E1 (Surface Water), E2 (External Moisture), and E3 (Internal Moisture).

Key compliance requirements include:

• BRANZ Appraisal or CodeMark certification for membrane systems
• Licensed installer requirements for warranty validity
• Minimum 10-year durability under typical service conditions
• Producer Statements (PS3) for critical waterproofing applications

Auckland Council requires specific documentation and compliance verification for waterproofing consents, making professional installation essential.

TPO (Thermoplastic Polyolefin) represents advanced single-ply membrane technology, combining polypropylene and ethylene-propylene rubber with polyester reinforcement. This creates a flexible, durable membrane ideally suited to Auckland’s demanding conditions.

• Flat and low-slope roofs
• Decks and balconies
• Commercial and residential buildings
• Areas requiring energy efficiency
• Complex roof geometries

• Excellent UV resistance – withstands Auckland’s intense sunlight
• Energy efficient – highly reflective surface reduces cooling costs
• Lightweight – minimal structural loading requirements
• Heat-welded seams – creates seamless, watertight barriers
• Flame-free installation – safer for occupied buildings
• Environmentally friendly – recyclable material

• Lifespan: 20-30+ years with proper maintenance
• Thickness: 1.52mm with reinforced scrim
• Warranties: Typically 20-year product warranties

Our team holds manufacturer approvals for leading TPO systems including GAF and Nuraply TPO. We ensure proper substrate preparation, precise heat-welding, and comprehensive quality control throughout installation.

Torch-on waterproofing uses modified bituminous membranes applied in multiple layers using controlled flame application. This creates robust, redundant waterproofing with excellent long-term durability.

• Flat roofs and podiums
• Balconies, decks, and terraces
• High foot-traffic areas
• Areas requiring maximum durability

• Multi-layer redundancy – base sheet plus cap sheet system
• Superior puncture resistance – ideal for foot traffic areas
• Proven durability – 40+ years of proven performance in NZ
• Excellent waterproofing – handles ponding water effectively
• UV stability – mineral-surfaced cap sheets provide protection

• System thickness: 7mm double-layer construction
• Lifespan: 15-25 years depending on application
• Warranties: 15-25 year product warranties available

We install premium systems from Viking Roofspec, Ardex, and Nuraply. Our certified technicians ensure proper primer application, controlled flame techniques, and precision detailing around penetrations and edges.

Dec-K-ing PVC from Viking provides tough, trafficable waterproofing specifically engineered for deck and balcony applications. The reinforced PVC construction offers both waterproofing and attractive surface finish.

• Residential and commercial decks
• Balconies above living areas
• High-traffic walkways
• Entertainment areas requiring slip resistance

• Trafficable surface – designed for regular foot traffic
• Slip-resistant texture – enhanced safety in wet conditions
• Heat-weldable seams – continuous waterproof barrier
• Attractive finish – eliminates need for additional surfacing
• Puncture resistant – suitable for furniture and equipment

• Lifespan: 15+ years with proper maintenance
• Warranty: 15-year material warranties available
• Colours: Multiple options including popular Barn Board finish

Butynol combines approximately 30% EPDM rubber with other polymers, creating highly flexible membranes with excellent UV resistance. This Australian-developed system has proven performance in harsh climates.

• Complex roof shapes and profiles
• Areas requiring high flexibility
• Residential applications
• Retrofit and overlay situations

• Exceptional flexibility – accommodates building movement
• Superior UV resistance – maintains properties under intense sunlight
• Excellent durability – proven performance in NZ conditions
• Versatile thickness options – 1.0mm to 2.25mm available
• Good for complex shapes – easily forms around details

• Lifespan: 25-40 years with quality installation
• Weather resistance – handles Auckland’s climate extremes
• Maintenance: Low-maintenance with periodic inspections

Liquid-applied systems including Ardex WPM 300 Hydrepoxy create seamless waterproof barriers that cure in place. These systems excel in complex geometries and repair applications.

• Garage walls and floor
• Basement walls and floor
• Block walls
• Waterproofing barrier on negative side in below-grade surfaces including basements, tunnels, lift wells, retaining walls and car parks
• Primer for ARDEX Liquid Applied Waterproofing Membranes and ARDEX Tile Adhesives in specific applications
• Barrier seal coating over damp, green or efflorescence producing concrete prior to overcoating with conventional building paints

• Can be applied to damp surfaces and freshly laid hardened (green) concrete
• Compatible with various substrates including brick, masonry, concrete block, stone and timber
• Excellent adhesion to most substrates including damp surfaces
• Doesn’t have any smell

• Product should be applied whilst surface temperature is between 10-35°C
• Product will cease to cure below 10°C but will recommence when temperature rises
• In enclosed areas, ventilation must be provided during curing cycle to enable adequate water evaporation

Basement and under-slab applications require specialised membrane systems designed for hydrostatic pressure and below-grade conditions.

• Preprufe 300R Plus. The membrane is designed for horizontal and vertical use below slabs and rafts, and is robust enough to accept heavy reinforcement.
• Bituthene 3000. Self-adhesive Peel and Stick tanking membrane.
• Ardex WPM 3000x. Suitable for use as a damp-proof or gas barrier under slabs, behind walls, and in areas subject to radon or methane gas.
• Viking peel and stick tanking membrane. The adhesive side features a peel-away release sheet; it is cold-applied to primed substrates (using Viking Tanking Primer or Primer WB) and achieves full bond without heat, flames or special adhesives.
• Sika Blackseal. Bitumen-based, liquid-applied membrane designed for waterproofing and damp-proofing behind retaining walls, basement structures, and other buried faces.
• Nuraply 3PTM. This Torch-On system is ideal for waterproofing tanking and basement situations that require hydrostatic resistance and flexible, long-term performance.

• Hydrostatic pressure resistance – must handle groundwater pressure
• Structural compatibility – works with concrete placement
• Drainage integration – coordinates with foundation drainage
• Access for maintenance – Type C systems provide ongoing serviceability

We understand Auckland’s unique climate challenges and building requirements. Our team holds manufacturer certifications for all major membrane systems and maintains current knowledge of Building Code requirements.

From premium TPO systems to proven torch-on solutions, we offer the complete range of quality membranes suited to Auckland conditions. We work with leading suppliers including Viking, Ardex, Nuraply, and GAF to ensure optimal material selection.

Our certified installers ensure proper substrate preparation, precise application techniques, and comprehensive quality control. We provide both material warranties and workmanship guarantees for complete peace of mind.

We handle all consent requirements, provide Producer Statements where required, and ensure full compliance with NZ Building Code durability and performance requirements.

Don’t wait for water damage to compromise your investment. Contact Auckland Waterproofing Experts today for your free Auckland membrane consultation. Our experienced team will assess your specific requirements and recommend the optimal waterproofing solution for lasting protection.

Request your free technical assessment – we’ll evaluate your property’s requirements and provide detailed specifications for the most suitable membrane system.

View our complete range of technical specifications and compliance documentation – comprehensive product information available at Technical Data Sheets.

Protect your Auckland property with proven waterproofing membranes. Professional installation, quality materials, Building Code compliance – your complete waterproofing solution.