Thermal Energy Storage (TES) Tank Insulation and Protection
Coating System
100 mm Polyurethane Foam Insulation + 2.0 mm
DELTAShield HP 400 Pure Polyurea + 150 µm
DELTAShield TC100 Aliphatic Polyurethane Topcoat
Date
2026Summary
DELTA Coatings International recently completed a high-performance insulation and protection system for a Thermal Energy Storage (TES) tank. The project utilized a fully integrated multilayer system engineered to provide thermal efficiency, seamless waterproofing, and long-term environmental protection.
Thermal Energy Storage tanks play a critical role in district cooling and energy infrastructure by storing chilled water and helping to balance peak electricity demand. To maintain optimum performance, it is essential that the insulation system remains dry and fully protected from environmental exposure. Water ingress can significantly reduce insulation efficiency, increase operational heat losses, and accelerate deterioration of both the insulation and the underlying steel substrate.
To address these challenges, DELTA Coatings International supplied a complete engineered solution combining polyurethane foam insulation, pure polyurea waterproofing, and an aliphatic polyurethane topcoat. The system incorporated 100 mm of polyurethane foam insulation to provide high-efficiency thermal performance and minimize energy losses. A 2.0 mm application of DELTAShield HP 400 pure polyurea was then applied to create a seamless, fully bonded waterproofing membrane with exceptional mechanical strength, elongation, and long-term durability. The system was completed with a 150 µm application of DELTAShield TC100 aliphatic polyurethane topcoat to deliver UV stability, color retention, and superior weather resistance.
Together, these materials form a robust protective envelope that safeguards both the insulation and the TES tank structure from water ingress, mechanical impact, ultraviolet exposure, and environmental degradation. By preserving insulation performance and preventing premature deterioration, the system helps maintain energy efficiency, reduce operational costs, and significantly extend the service life of critical infrastructure assets.
Thermal Energy Storage tanks play a critical role in district cooling and energy infrastructure by storing chilled water and helping to balance peak electricity demand. To maintain optimum performance, it is essential that the insulation system remains dry and fully protected from environmental exposure. Water ingress can significantly reduce insulation efficiency, increase operational heat losses, and accelerate deterioration of both the insulation and the underlying steel substrate.
To address these challenges, DELTA Coatings International supplied a complete engineered solution combining polyurethane foam insulation, pure polyurea waterproofing, and an aliphatic polyurethane topcoat. The system incorporated 100 mm of polyurethane foam insulation to provide high-efficiency thermal performance and minimize energy losses. A 2.0 mm application of DELTAShield HP 400 pure polyurea was then applied to create a seamless, fully bonded waterproofing membrane with exceptional mechanical strength, elongation, and long-term durability. The system was completed with a 150 µm application of DELTAShield TC100 aliphatic polyurethane topcoat to deliver UV stability, color retention, and superior weather resistance.
Together, these materials form a robust protective envelope that safeguards both the insulation and the TES tank structure from water ingress, mechanical impact, ultraviolet exposure, and environmental degradation. By preserving insulation performance and preventing premature deterioration, the system helps maintain energy efficiency, reduce operational costs, and significantly extend the service life of critical infrastructure assets.
