Protect Insulated Steel Tanks, Pipes, Valves, Ducts, and Process Equipment from Corrosion Under Insulation (CUI) with Permacorr®
Corrosion under insulation (CUI) is a major threat to steel tanks, piping, process piping and structural steel — causing billions of dollars in costly maintenance, downtime, and lost productivity.
Steel corrodes faster at elevated temperatures, and traditional polymeric coatings often fail due to cracking and moisture ingress.
Permacorr offers a breakthrough solution for CUI prevention
Unlike standard anti-corrosion coatings that rely on physical adhesion, Permacorr forms a true chemical bond at the molecular level. Even if microcracks develop in the outer layer, the steel remains fully protected.
Engineered for ambient to high-temperature service up to 250°C (480°F), Permacorr phosphate based ceramic technology passivates corrosion cells and stops oxidation, even in the most severe CUI conditions.
Proven Tests: Boiling water and the Vertical Pipe Test
Permacorr was thoroughly tested – including six months of cyclic boiling water immersion and the Vertical Pipe Test – (ISO 19277) and it outperformed traditional epoxy and phenolic CUI coatings, with no blistering or corrosion.
Key Benefits of Permacorr for Corrosion Under Insulation:
- Extends the life of insulated pipes, tanks, process equipment, valves, and ducts
- Excellent resistance to thermal cycling and moisture
- Fast application, one-coat system (10–15 mils), rapid curing
- Flash rust tolerant; no dehumidification or topcoat needed, no or low preparation required
- Environmentally safe, zero VOCs, true dry-fall, and low carbon footprint
- Reduced maintenance, fast return to service
- Lowered overall long-term costs in maintenance, downtime, and lost productivity
