Balcony/Roof Waterproofing Membranes
Bulletproof Protection for Exposed Areas
Balconies and roofs cop the worst weather has to offer - UV bombardment, standing water, thermal cycling, and constant exposure. Your waterproofing membrane needs to handle it all without breaking down, cracking, or letting you down years later.
Gripset 38FC (undertile)
Trusted across residential and commercial projects, 38FC delivers flexible, breathable protection for trafficable balconies and low-slope roof areas. The cementitious formula bonds tenaciously to concrete and cement substrates while maintaining the flexibility to handle structural movement. UV-stable finish can be left exposed or tiled over, giving you options for final detailing.
Siegel Pro25 (undertile)
Step up to Pro25 when the application demands superior crack-bridging and elongation properties. Engineered for balconies, terraces, and podium decks where movement and stress concentration can compromise lesser membranes. Excellent adhesion to concrete, fiber cement, and properly prepared surfaces. Handles foot traffic and can be top-coated or tiled according to your specifications.
Siegel Pro35
The premium choice for complex roof and balcony applications where failure isn't an option. Pro35 brings exceptional elongation and recovery properties that absorb building movement, thermal expansion, and settling without losing waterproof integrity. Ideal for large-format balconies, roof decks, planter boxes, and areas with high exposure or difficult detailing. When the stakes are high and the conditions are tough, Pro35 delivers.
Exposed Areas Need Proven Performance
Unlike internal wet areas, balconies and roofs face years of UV exposure, temperature extremes, and standing water. The membrane you choose today determines whether you're back in five years cutting out failed sections or moving on to the next job with confidence.
All three systems meet Australian Standards for external waterproofing, but each has specific strengths for different substrate conditions, traffic levels, and environmental exposure.
Questions about substrate preparation, primer requirements, or detailing around penetrations and upstands? Our team knows these products inside out and can guide you through proper application for long-term performance.
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