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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

Korolite® Specs 100 = Types 1, I   160 = Types 2, II   250 = Type 3

Korolite® Installation Guide   Environmental Product Declaration  certified by UL Environment

Surface Burning Characteristics CAN/ULC-S102.2 at 2½" thick: 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.

Material properties of various Korolite® Insulation Types
Property¹ Units Korolite® Types Test Std.
100 130 160 200 250 400 600
Third-Party Certified Type Canada 1   2   3     CAN/ULC-S701
USA I   II         ASTM C578
Compressive Resistance2 Minimum         ASTM D1621
@ 10% Deformation psi 10 13 16 20 25 40 60
kPa 70 90 110 140 172 276 414
Thermal Resistance3,4 Minimum @ 24°C [75°F] ASTM C518
R-Value/ inch thickness
ft²•hr•°F/ (BTU•in) 3.75 3.8 4.04 4.1 4.27 4.27 4.3
RSI / 25mm thickness
m²•°C/ (W•25mm) 0.65 0.67 0.70 0.71 0.74 0.74 0.75
Flexural Strength
Minimum
psi 25 30 35 40 50 60 75 ASTM C203
Proc.B
kPa 172 208 240 280 345 414 517
Water Vapor Permeance4
Maximum at 1" thickness
perms 5.0 3.5 3.5 3.3 2.3 2.3 2.3 ASTM E96
ng/(Pa•s•m²) 287 201 200 190 130 130 130
Water Absorption5
Maximum
% by
volume
4 3 3 3 2 2 2 ASTM D2842
Dimensional Stability % linear
change max.
1.5 ASTM D2126
7 Days @ 70±2°C
Additional Thermal Resistance Info3,4,6 ASTM C518
or C177
R-Value/ inch thickness
ft²•hr•°F/ (BTU•in) @25°F 4.2 4.4 4.6 4.6 4.8 4.8 4.8
@40°F 4.0 4.2 4.4 4.4 4.6 4.6 4.6

¹ The test methods used to determine the material properties provide a means of comparing different cellular plastic thermal insulations. They are intended for use in specifications, product evaluations and quality control, but they are not intended to predict end-use product performance.  ² The elastic limit is between 1% and 2% strain. Compressive resistances at 10% strain are provided for applications where the intended end-use can tolerate plastic (permanent) deformation under load.  ³ R means resistance to heat flow. The higher the R-value, the greater the insulating power.  4 Values are for 1 inch or 25mm thick samples with natural skins intact. Better values will result for thicker materials.  5 The lab-test method for water absorption uses complete submersion under a head of water for 96 hours, so the values are applicable to specific design requirements only when the end-use conditions are similar to test method requirements.  6 not part of all the industry consensus standards (ASTM C578, CAN/ULC-S701) and provided AS-IS solely for informational purposes

Additional Properties of EPS

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 • 10-5/°K
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 6" thick
Limiting Oxygen Index: min. 24% per ASTM D2863. Airfoam's EPS for construction applications contains a polymeric (non-HBCD) fire retardant modifier.
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.
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.

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

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

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, G90 galvanized or AZ50 aluminum-zinc coated steel in 26 or 24 Gauge. They are bonded to the closed cell, expanded polystyrene (EPS) insulation core with a specially formulated adhesive.

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 Rating 5, Smoke Developed Classification 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.

Additional Properties of EPS

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 • 10-5/°K
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 6" thick
Limiting Oxygen Index: min. 24% per ASTM D2863. Airfoam's EPS for construction applications contains a polymeric (non-HBCD) fire retardant modifier.
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.
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.

Geofoam Design Guide Geofoam Seismic Buffers Geofoam Durability
Material properties of Airfoam's various Geofoam Types

The standard full-size blocks are 48½" x 48½" x 194" (1.23m x 1.23m x 4.92m).

Property*
Units
Airfoam Types
ASTM Test
G15
G19
G22
G24
G29
G39
G46
Density
Minimum
kg/m3 14.4 18.4 21.6 24.0 28.8 38.4 45.7 D1622
lb/ft3 0.9 1.15 1.35 1.5 1.8 2.4 2.85
Compressive Resistance
@ 1% Strain
Minimum
kPa 25 40 50 57 75 103 128 D1621
Proc.A
psi 3.6 5.8 7.3 8.3 10.9 15 18.6
Elastic Modulus**
typical within elastic range
kPa 2500 4000 5000 5800 7500 10300 12800 D1621
psi 360 580 730 840 1090 1500 1860
Flexural Strength
Minimum
kPa 172 207240 276 345 414 517 C203
Proc.B
psi 25 3035 40 50 60 75
Third-Party Certified Type EPS15 EPS19    EPS29     D6817
Additional Compressive Resistance Properties**
@ 5% Strain
Minimum
kPa 55 90 115 140 170 241 300 D1621
Proc.A
psi 8.0 13.1 16.7 20.0 24.7 35.0 43.5
@ 10% Strain
Minimum
kPa 70 110 135 157 200 276 345
psi 10.2 16 19.6 22.7 29 40 50

* 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
EPS46
Density
Minimum
kg/m3 14.4 18.4 21.6 28.8 38.4 45.7 D1622
lb/ft3 0.9 1.15 1.35 1.8 2.4 2.85
Compressive Resistance
@ 1% Deformation
Minimum
kPa 25 40 50 75 103 128 D1621
Proc.A
psi 3.6 5.8 7.3 10.9 15 18.6
Flexural Strength
Minimum
kPa 172 207240 345 414 517 C203
Proc.B
psi 25 3035 50 60 75
Limiting Oxygen Index
Minimum
% 24 2424 24 24 24 D2863
Additional Compressive Resistance Properties**
Compressive Resistance
@ 5% Deformation
Minimum
kPa 55 90 115 170 241 300 D1621
Proc.A
psi 8.0 13.1 16.7 24.7 35.0 43.5
Compressive Resistance
@ 10% Deformation
Minimum
kPa 70 110 135 200 276 345 D1621
Proc.A
psi 10.2 16.0 19.6 29.0 40.0 50

* 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) resists mold & fungi growth per ASTM C1338 testing 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) fire 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
Load Distribution: Poisson's ratio ≈0.12 within the elastic range; Coefficient of Friction: 0.5-0.7 along clean faces
Buoyancy-Force: min. 900 kg/m³ up to 986 kg/m³ [56-62 lbs/ft³]; Capillarity: None 
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.
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 coatings or self-adhesive membranes.
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. GHS Classification: Non-Hazardous, see SDS