TREMproof RT Plus – High-Performance Cementitious Waterproofing for Extreme Conditions

TREMproof RT Plus sets the industry standard for permanent, reliable waterproofing in the most demanding environments. This two-component, acrylic-modified cementitious coating is engineered specifically for internal waterproofing of concrete water-retaining structures and as a negative-side barrier against hydrostatic pressure. Capable of withstanding an immense 250 kPa (equivalent to a 25-meter water head) when applied at 1.6mm Dry Film Thickness, it delivers peace of mind for engineers, architects, and contractors.

A key advantage of TREMproof RT Plus is its ability to be applied to damp, "green" concrete surfaces just 24 hours after formwork removal, dramatically accelerating project timelines without compromising performance. Certified to AS 4020:2018 for use in contact with drinking water, it is the trusted solution for potable water tanks and other critical infrastructure.

Key Features & Benefits:

• Extreme Hydrostatic Pressure Resistance: Formulated to withstand up to 250 kPa (25m head) of positive hydrostatic pressure, making it ideal for deep tanks and underground structures.
• Negative-Side Waterproofing: Uniquely effective at mitigating water ingress from the negative (dry) side of a structure, solving waterproofing challenges where external access is impossible.
• Drinking Water Certified: Complies with AS 4020:2018, ensuring it is safe for use in potable water tanks, reservoirs, and related applications.
• Application on Green Concrete: Can be applied to damp substrates 24 hours after formwork stripping, helping to expedite critical path construction schedules.
• Fully Immersible: Designed for constant, long-term immersion in water-retaining structures without degradation.
• Low VOC Formulation: A more environmentally responsible choice with low volatile organic compound content.
• Compliant with Australian Standards: Tested to AS 4654.1 for waterproofing membranes, ensuring compliance with the National Construction Code (NCC).

Primary Applications:

• Water Retaining Structures: Internal waterproofing for OSD (On-Site Detention) tanks, fire water retention tanks, reservoirs, and concrete basins.
• Retaining Walls: Below-grade waterproofing for underground walls and structures subject to water pressure.
• Planter Boxes & Green Walls: Reliable protection for landscaped areas where waterproofing is critical.
• Negative Side Application: Ideal for remediation and retrofit projects where waterproofing must be applied from the interior.
• Under Tile Waterproofing: Provides a robust, fully-tanked membrane for external tile substrates.

Technical Specifications:

• Product Type: Two-component, acrylic-modified cementitious coating.
• Hydrostatic Resistance: 250 kPa (25m head) @ 1.6mm DFT.
• Standards Compliance: AS 4020:2018 (Products for use in contact with drinking water) & AS 4654.1 (Waterproofing membranes).
• Application: Suitable for damp/green concrete (24 hours post-formwork removal).
• VOC: Low VOC formulation.
• Packaging: 20L Kit (20kg Powder / Part A + 10L Liquid / Part B).
• Colour: Black.

Why Choose TREMproof RT Plus?
For projects where failure is not an option, TREMproof RT Plus provides certified, high-performance waterproofing backed by rigorous testing. Its unique combination of early application on green concrete, negative-side capability, and extreme pressure resistance makes it an indispensable solution for civil, commercial, and industrial projects.

Do not apply to contaminated surfaces.

Not to be used as an exposed or trafficable surface.

Not approved for direct contact with asphalt-based products.

Do not apply over a curing or forming oil compound.

Due to limited elongation, TREMproof RT Plus will not
tolerate movement/cracking of substrate.

Separately seal and waterproof dynamic cracks/gaps/joints.

If water is treated with chlorine, ensure free chlorine is
maintained at normal levels (ie less than 6 parts per million at temperatures
lower than 30°C.

Not to be UV exposed or pedestrian/vehicular trafficable
membrane.