Repair Systems — 03 — Facade & External Envelope
Salt attack & salt-contaminated render — repair systems
Technical product reference for salt attack remediation on Class 2 strata facades — select a product type to view salt-resistant renovating renders, substrate treatments, breathable render systems and bonding primers for salt-contaminated substrates. Note: where rising damp is the cause of salt attack, see the Rising Damp section for DPC injection and damp-proof systems.
Salt Attack Repair Systems
Salt-resistant / renovating render systems
Rockcote, Parex and Weber renovating render systems formulated to tolerate high salt environments — porous matrix allows salt migration without surface disruption, low soluble salt content.
3 product systems
Salt-retardant substrate treatment systems
Sika, Remmers and Aquron silicate-based crystalline and penetrating salt-retardant treatments applied to masonry and concrete substrates to reduce capillary salt migration before re-rendering.
3 product systems
Breathable / vapour-permeable render systems
Caparol, Remmers and Rockcote WTA-compliant vapour-permeable render systems — sd value <0.14m, high pore volume >35%, allows moisture vapour to escape without disrupting the render surface.
3 product systems
Saline-resistant primer / slurry systems
Cementitious bonding slurry and polymer primer systems for salt-affected substrates — SikaCem bonding slurry, Fosroc Nitobond and Dulux primer systems applied before salt-resistant render.
3 product systems
Related Systems
Where rising damp is the underlying cause of salt attack, render repair alone is not sufficient. See the Rising Damp section for DPC injection, silane cream, breathable render and renovating plaster systems that address the moisture source before re-rendering.