Repair Systems — 03 — Facade & External Envelope
Salt-resistant renovating render systems
Technical product reference for WTA-classified salt-resistant renovating render (sanierputz) systems used in facade remediation on Australian masonry and concrete facades subject to salt attack from chloride and sulfate contamination. Covers product classification, system selection, and brand comparisons.
What are salt-resistant renovating render systems?
Salt-resistant renovating renders (also called sanierputz or renovating plasters) are polymer-modified, porous-matrix cementitious render systems specifically formulated for masonry and concrete substrates contaminated with soluble salts.
Product Reference
3 products — 3 brands — salt-resistant renovating render systems — scroll to view all
Remmers WTA Sanierputz SP
WTA-classified salt-resistant renovating render — exterior masonry
System Description
Remmers WTA Sanierputz SP is a WTA-classified salt-resistant renovating render (sanierputz) for exterior masonry and concrete facades subject to salt attack from chloride and sulfate contamination. It is formulated with a controlled pore structure that allows crystallising salts to migrate into the render body without causing surface disruption, efflorescence, or delamination. Confirm pore volume, WTA classification status in Australia, minimum thickness, and application sequence with Remmers Australia technical before specifying. TODO: owner confirm — Remmers WTA Sanierputz SP, pore volume, WTA classification and availability in Australia.
Technical Properties
- WTA-classified salt-resistant renovating render
- Porous matrix — allows salt crystallisation within render pores
- Minimum 20mm application thickness (confirm from TDS)
Limitations
- Not suitable over active moisture ingress — treat moisture source first
- Minimum thickness critical — thin application fails
- Not a standard PM render substitute on non-salt-affected substrates
PROCUREMENT SOURCES
Confirm suitability with the current manufacturer TDS before specifying or applying.
Parex Reveno Renovating Render
Salt-tolerant porous-matrix renovating render — exterior masonry
System Description
Parex Reveno is a porous-matrix renovating render formulated for facades subject to salt attack and recurring efflorescence. The Parex range is distributed in Australia through Alumasc Building Products. Confirm current product name, WTA classification status, and Australian availability with Parex/Alumasc technical before specifying. TODO: owner confirm — Parex Reveno specification, WTA classification and Australian availability.
Technical Properties
- Porous-matrix render for salt-affected facades
- Exterior masonry use
- Apply over salt-retardant substrate treatment
Limitations
- TODO: owner confirm — Parex Reveno product name, specification and WTA classification in Australia
- Confirm current Parex/Alumasc distribution nationally
- Not a standard PM render substitute
PROCUREMENT SOURCES
Confirm suitability with the current manufacturer TDS before specifying or applying.
Rockcote Salt Renovation Render
Salt-resistant renovating render — exterior facade
System Description
Rockcote (Saint-Gobain Weber) supplies salt-resistant renovating render systems for salt-affected facades. Confirm the current specific product name in the Rockcote/Weber range for salt-resistant renovating render with Saint-Gobain Weber Australia. TODO: owner confirm — exact Rockcote or Weber product name and specification for salt-resistant renovating render applications.
Technical Properties
- Salt-resistant render for exterior masonry
- Suitable for coastal environments
- Pre-bagged — mixed with clean water
Limitations
- TODO: owner confirm — exact Rockcote/Weber product for salt-resistant renovating render
- Confirm WTA status with Saint-Gobain Weber Australia
- Apply after substrate treatment
PROCUREMENT SOURCES
Confirm suitability with the current manufacturer TDS before specifying or applying.
System Comparison
Side-by-side comparison of salt-resistant renovating render systems. Confirm all product selections against the current manufacturer TDS before specifying.
| Product system | Brand | WTA class | Pore volume | Min thickness | Substrate prep | Primary use |
|---|---|---|---|---|---|---|
| Remmers WTA Sanierputz SP | Remmers Australia | WTA-classified (confirm AU status) | Min 25% by volume (confirm TDS) | Min 20mm (confirm TDS) | Salt-retardant treatment + Remmers primer | Salt-attacked exterior masonry and concrete facades |
| Parex Reveno Renovating Render | Parex / Alumasc | TODO: confirm WTA status | Confirm with Parex/Alumasc | Confirm with Parex TDS | Salt-retardant substrate treatment | Salt-affected facade re-render — coastal masonry |
| Rockcote Salt Renovation Render | Rockcote / Saint-Gobain Weber | TODO: confirm WTA status | Confirm with Rockcote TDS | Confirm with Rockcote TDS | Substrate treatment — confirm with Rockcote | Coastal and salt-affected facade re-render |
Do not confuse salt-resistant renovating render with:
- Standard PM render — not formulated for salt attack; standard polymer-modified cementitious renders have insufficient pore volume for WTA renovating render classification and will fail on salt-contaminated substrates
- Breathable vapour-permeable render — high sd value, different pore structure specification; breathable renders prioritise vapour transmission rather than salt crystallisation accommodation
- Salt-retardant substrate treatment — applied to the substrate before render; this is a substrate pre-treatment stage, not a render system
- Saline primer and slurry — a primer or bonding slurry applied between the substrate treatment and the renovating render; not a render system
Disclaimer
This page provides general technical information only. Final product selection must be confirmed against the current manufacturer technical data sheet, project specification, substrate condition, exposure classification, AS 3700, NCC requirements, and applicator warranty conditions. Products marked TODO: owner confirm require verification before specifying. Do not rely on this reference as a substitute for professional engineering or facade consultant advice.