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Insulation Technical Library

Airfoam insulation products are versatile, resilient, budget-friendly, and environmentally responsible solutions for construction applications around the entire building envelope. Various insulation products are available to meet energy efficiency and many other requirements for the long lives of buildings.

Insulation around the entire Building Envelope

Product Lines

Overview - Korolite® Types & Properties
Korolite® Spec Sheets: 100 (Types 1 and I) - 160 (Types 2 and II) - 250 (Type 3)
Environmental Product Declaration (EPD) certified by UL Environment
Environmental Impacts & True Long-Term Thermal Resistance
¾ Hour Fire Rating for 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.
ICC-ES ER5999, Surface Burning Characteristics CAN/ULC-S102: Korolite® 100, 160 and 250

Korolite® Insulated Metal Panel Properties

The panels are 48" [1219mm] wide, 2-11" thick [50-280mm] and custom-cut to lengths per approved designs. The panels' facings are pre-painted, 26 or 24 gauge, G90 galvanized sheet steel bonded to the EPS core with a specially formulated adhesive. EPS is a closed cell, rigid foam that uses Air as main ingredient.

Panel Thickness mm 50 102 152 203 254
inch 2 4 6 8 10
Core: Korolite® 100
Expanded Polystyrene
CAN/ULC-S701 Type 1 certified
ASTM C578 Type I certified
Panel Weights with
26 ga. facings
lbs/sqft 2.18 2.35 2.54 2.72 2.91
kg/m² 10.6 11.5 12.4 13.3 14.2
Thermal Resistance1,2 typical per ASTM C518 or C177
RSI
m²•°C/W
@24°C 1.36 2.71 4.07 5.42 6.78
@4.4°C 1.47 2.94 4.41 5.88 7.34
@-4°C 1.53 3.06 4.6 6.13 7.66
R-Value
ft²•hr•°F/BTU
@75°F 7.7 15.4 23 31 39
@40°F 8.3 16.7 25 33 42
@25°F 8.7 17.4 26 35 44
Air Permeance ASTM E283 0.002 (L/s)/m² at 300 Pa
0.0004 CFM/ft² at 6.26 psf
Water Penetration ASTM E331 Passed at 137 Pa
Fire Growth of Insulated Building Panels CAN/ULC-S138 Passed in a Full-Scale Room Configuration
Surface Burning Characteristics
for panels w/ facings
CAN/ULC-S102 Flame Spread 5, Smoke Developed 175

¹ Foam Core Values are calculated by extrapolation of 1 inch thick EPS samples. Data provided AS-IS solely for informational purposes ² R means resistance to heat flow. The higher the R-value, the greater the insulating power.

Library for Korolite® Insulated Metal Panels (formerly "K-Lock")

ULC Certificate of Compliance CAN/ULC-S138 Room Fire Growth & Listing
ASTM E283 Air Permeance & ASTM E331 Water Penetration
CAN/ULC-S102 Surface Burning Characteristics
Third-Party Listed & Inspected by Intertek - online
Canadian Food Inspection Agency (CFIA) Approval with and without FRP
Floor Panel Uniform & Concentrated Loads per NBC 2010

Geofoam Design Guide
Material properties of Airfoam's various Geofoam Types
Property*
Units
Airfoam Types
ASTM Test
G15
G19
G22
G24
G29
G39
Density
Minimum
kg/m3 14.4 18.4 21.6 24.0 28.8 38.4 D1622
lb/ft3 0.9 1.15 1.35 1.5 1.8 2.4
Compressive Resistance
@ 1% Strain
Minimum
kPa 25 40 50 57 75 103 D1621
Proc.A
psi 3.6 5.8 7.3 8.3 10.9 15
Elastic Modulus**
typical
kPa 2500 4000 5000 5800 7500 10300 D1621
psi 360 580 730 840 1090 1500
Flexural Strength
Minimum
kPa 172 207240 276 345 414 C203
Proc.B
psi 25 3035 40 50 60
Third-Party Certified Type EPS15 EPS19    EPS29   D6817
Additional Compressive Resistance Properties**
@ 5% Deformation
Minimum
kPa 55 90 115 140 170 241 D1621
Proc.A
psi 8.0 13.1 16.7 20.0 24.7 35.0
@ 10% Deformation
Minimum
kPa 70 110 135 157 200 276
psi 10.2 16.0 19.6 22.7 29.0 40.0

* The test methods used to determine the above material properties provide a means of comparing different rigid, cellular polystyrene geofoam products. They are intended for use in specifications, product evaluations and quality control, but they are not intended to predict end-use product performance.   ** The elastic limit/yield point is between 1% and 2% strain. Compressive resistances at 5% and 10% strain are provided for applications where the intended end-use includes plastic (permanent) deformation under load; to limit it, use the 1% deformation values for design.

The ASTM Standard D6817 "Standard Specification for Rigid Cellular Polystyrene Geofoam" provides material properties of various EPS Types:

Property*
Units
Types
ASTM Test
EPS15
EPS19
EPS22
EPS29
EPS39
Density
Minimum
kg/m3 14.4 18.4 21.6 28.8 38.4 D1622
lb/ft3 0.9 1.15 1.35 1.8 2.4
Compressive Resistance
@ 1% Deformation
Minimum
kPa 25 40 50 75 103 D1621
Proc.A
psi 3.6 5.8 7.3 10.9 15
Flexural Strength
Minimum
kPa 172 207240 345 414 C203
Proc.B
psi 25 3035 50 60
Limiting Oxygen Index
Minimum
% 24 2424 24 24 D2863
Additional Compressive Resistance Properties**
Compressive Resistance
@ 5% Deformation
Minimum
kPa 55 90 115 170 241 D1621
Proc.A
psi 8.0 13.1 16.7 24.7 35.0
Compressive Resistance
@ 10% Deformation
Minimum
kPa 70 110 135 200 276 D1621
Proc.A
psi 10.2 16.0 19.6 29.0 40.0

* The test methods used to determine the above material properties provide a means of comparing different rigid, cellular polystyrene geofoam products. They are intended for use in specifications, product evaluations and quality control, but they are not intended to predict end-use product performance.   ** Compressive resistance at 5% and 10% deformation are provided for applications where the intended end-use includes long-term (plastic) deformation under load.

Additional Properties for all Types

Expanded polystyrene (EPS) is resistant to mold & fungi 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.
Limiting Oxygen Index: min. 24% per ASTM D2863. Airfoam's EPS for construction applications contains a polymeric (non-HBCD) flame-retardant modifier.
Max. service temperature: Long-Term Exposure 75°C [167°F]; Intermittent Exposure 80°C [176°F]
Thermal expansion coefficient: 5-7 • 10-5/°K
Capillarity: None;  Buoyancy-Force: min. 900 kg/m³ [56 lbs/ft³]
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.
Load Distribution: Poisson's ratio ≈0.12 within the elastic range; Coefficient of Friction: ≈0.5 along molded, clean faces
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.
GHS Classification: Non-Hazardous, see SDS
CAUTION: EPS products are combustible and must not be exposed to excessive heat, sparks, open flames, or any other sources of ignition. 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.