Secondary Containment Linings
Secondary containment has to hold whatever the primary vessel was holding, for as long as it takes to notice and respond. That means a lining with no seams to fail, low permeance so nothing migrates into the substrate, and chemical resistance matched to the actual stored product — not a generic coating.
Polycoat Products manufactures spray-applied polyurea and hybrid elastomer linings for containment areas, berms, dikes, sumps, trenches and tank exteriors. All are 100% solids and cure fast enough to return a containment area to service quickly.
Selecting a Containment Lining
The deciding factor is usually the chemistry being contained, then whether the area is exposed to sunlight, then abrasion.
| System | Type | Select it for |
|---|---|---|
| Polyeuro® 8245 | Spray polyurethane polyurea | Acid and base environments. Excellent acid and base resistance, and an extremely low permeance rate. |
| Polyeuro® 5502 | Aromatic spray polyurea | The general-purpose containment lining. Good chemical resistance, meets USDA criteria, zero VOC. |
| Polyeuro® 5602 | Aromatic spray polyurea | Where a low permeance rate is the priority. Coats carbon or mild steel without primer on properly prepared surfaces. |
| Polyeuro® 5901 | Aromatic spray polyurea | Low permeance rate with excellent color retention. Coats most metals without primer. |
| Polyeuro® 7502 | Aliphatic spray polyurea | Sun-exposed containment. Aliphatic chemistry with excellent color retention. |
| Polyeuro® 5502 FG | Aromatic spray polyurea | Food Grade formulation. |
| Polyeuro® 1050H | Spray polyurea | Containment in contact with potable water — NSF-61 approved. Also abrasion and impact resistant. |
| TuffShield® 801 | Spray elastomer | Superior hydrocarbon resistance, with excellent tensile and tear resistance. |
| TuffShield® II HAR | Spray elastomer | High Abrasion Resistance. Exceptional abrasion resistance and hydrolytic stability, high tear and impact resistance. |
Why Spray Polyurea for Containment
- Seamless. No joints, laps or welds to become the failure point.
- Coats steel without primer. Several grades bond to carbon or mild steel directly on properly prepared surfaces.
- Installed with or without reinforcement in transitional areas.
- Zero VOC at 100% solids, and grades that meet USDA criteria.
- Low temperature flexibility and excellent thermal stability for outdoor containment.
Typical Containment Applications
- Secondary containment areas and berms
- Refineries and chemical plants
- Fertilizer plants
- Landfill containment
- Paper and pulp mills
- Power plants and pen stocks
- Food-processing and cold-storage facilities
- Mining operations
Matching the Lining to the Chemistry
Chemical resistance is specific to the stored product, temperature and exposure time. Chemical resistance charts for the Polyeuro® and TuffShield® ranges are available in our Resources library, and our technical service team can review the containment schedule and recommend a system.
Polycoat Products has manufactured polyurethane and polyurea systems since 1979 from ISO-certified facilities in California and Texas.