Korolite® Expanded Polystyrene (EPS) is a high-performance, closed cell, rigid foam insulation material that uses air as main ingredient. EPS insulation resists moisture and mold/fungi growth with low environmental impacts, high & stable Long-Term Thermal Resistance, and good drying potential over the long service lives of buildings.
Adding continuous insulation (c.i.) offers higher effective insulation values than adding similar amounts of cavity-insulation and it greatly reduces the risk of condensation and mold on framing members with proper detailing & installation. All Korolite® types are available in various standard and customized sizes & thicknesses and can be factory-tapered.
Expanded Polystyrene (EPS) resists mold & fungi growth per ASTM C1338 and has no nutritional value for insects. To protect against termites place adequate physical barriers such as membranes around below-grade EPS.
Max. Service Temperature: Long-Term Exposure 75°C [167°F], Intermittent Exposure 80°C [176°F]; Thermal Expansion coefficient: 5-7 •
Solubility: Insoluble in water and in general chemically inert. EPS dissolves in hydrocarbons (e.g. fuels, oils, tar), organic solvents (e.g. acetone/ketones, benzene, paint thinner), ethers, esters, aldehydes and amines. Capillarity: None
UV-light surface degradation: white EPS can be exposed to direct sunlight for a few weeks. Prolonged exposure to ultraviolet light creates a yellow dust on the surface of EPS products which has negligible impact on the products' properties but may require removal before adhering other materials such as stucco or self-adhesive membranes.
Surface Burning Characteristics Canada CAN/ULC-S102.2: Flame-Spread Rating ≤290, Smoke Developed Classification over 500. USA ASTM E84 (UL 723)ª: FSI ≤25, SDI ≤450 up to 5" thick
Limiting Oxygen Index: min. 24% per ASTM D2863. Airfoam's EPS for construction applications contains a polymeric (non-HBCD) fire retardant modifier.
CAUTION: EPS products are combustible and must not be exposed to excessive heat, sparks, open flames, or any other sources of ignition. A protective barrier or thermal barrier is required as specified in the appropriate building code. If stored/used in closed containers, confined, or low-lying areas, ensure adequate ventilation to prevent accumulation of flammable pentane vapours. Prevent inhalation of smoke, fumes or dust from burning or fabrication activities. GHS Classification: Non-Hazardous, see SDS
ª Ceiling measurement only, conducted through determination of flame spread index and smoke-developed index with the removal of any contribution of molten materials ignited on the floor of the Steiner tunnel.
Thermal Insulation CAN/ULC-S701, CAN/ULC-S102.2, ICC-ES AC12, ASTM C578: Korolite® 100 160
Surface Burning Characteristics CAN/ULC-S102.2 @ 2½" thick: Korolite® 100 160 250
¾ Hour Fire Rating for a Composite Wall Assembly with EPS c.i. CAN/ULC-S101, ASTM E119
Meets NFPA 285 (contact us) with specific limitations for an Exterior Wall Assembly with EPS c.i.
BRYX.R7726 - Foamed Plastic Surface Burning Characteristics ANSI/UL 723
TGYVC.R19427 - Roof Deck Construction Materials, Fire Spread Under Roof Deck Assemblies CAN/ULC-S126
CDETC.R19427 - Rigid Roof Insulation Fire Resistance Ratings CAN/ULC-S101
TGKXC - Roof Deck Construction No. C7, C12A, C12B, C38
BXUVC - Roof Fire-Resistance Ratings Design No. R210, R222