External Waterproofing
Balconies, Rooftops, Retaining Walls & Basements
Victoria’s unpredictable weather can put serious strain on external areas. That’s why Flexitray Waterproofing uses high-performance, fully compliant systems under AS4654.2 and the NCC Housing Provisions Volume 2, built for movement, moisture, and exposure.
We Waterproof
Balconies,
decks & terraces
decks & terraces
Rooftops
& podium levels
& podium levels
Retaining walls,
planter boxes & basements
Tailored to the Build
Concrete slabs
ideal for liquid membranes
Lightweight frames
we recommend compressed cement sheeting over ply or tile underlay
High-exposure zones
sheet membranes for added protection
Expert Know-How
UV-stable, weather-resistant membranes for rooftop longevity
Drainage layers and protection boards for below-ground builds
Systems customised to meet AS4654.2 standards
Our balcony and rooftop waterproofing services are trusted by residential and commercial builders across Melbourne and Victoria.
Download Technical Data Sheets
Why Builders Call Us First
Proven results on balcony and basement waterproofing
Customised solutions based on materials and layout
Designed to avoid costly fixes and protect against future leaks