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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

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.
Surface Burning Characteristics CAN/ULC-S102: Korolite® 100, 160 and 250

Material properties of various Korolite® Insulation Types
Property Units Korolite® Types Test Std.
100 130 160 200 250 300 400
Third-Party Certified Type Canada 1   2   3     CAN/ULC-S701
USA I   II         ASTM C578
Compressive Resistance1,4         ASTM D1621
@ 10% Deformation
Minimum
psi 10 13 16 20 25 30 40
kPa 70 90 110 140 172 210 276
Thermal Resistance1,2,3 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 4.27
RSI / 25mm thickness
m²•°C/ (W•25mm) 0.65 0.67 0.70 0.71 0.74 0.74 0.74
Flexural Strength¹
Minimum
psi 25 30 35 40 50 51 60 ASTM C203
Proc.B
kPa 172 208 240 280 345 350 414
Water Vapor Permeance1,2
Maximum at 1 inch 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 Absorption1,5
Maximum
% by
volume
4 3 3 3 2 2 2 ASTM D2842
Dimensional Stability¹ % linear
change max.
1.5 1.5 1.5 1.5 1.5 1.5 1.5 ASTM D2126
7 Days @ 70±2°C
Density¹
Minimum
kg/m³ 14.4 18.4 21.6   28.8   38.4 ASTM C303
or D1622
lbs/ft³ (PCF) 0.9 1.15 1.35   1.8   2.4
Additional Thermal Resistance Info1,2,3,b ASTM C518
or C177
R-Value/ inch thickness
Minimum
ft²•hr•°F/ (BTU•in) @25°F 4.2 4.4 4.6   4.8    
@40°F 4.0 4.2 4.4   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 Values are for 1 inch or 25mm thick samples with natural skins intact. Better values will result for thicker materials.  ³ R means resistance to heat flow. The higher the R-value, the greater the insulating power.  4 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 load5 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.  b 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 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
Limiting Oxygen Index: min. 24% per ASTM D2863. Airfoam's EPS for construction applications contains a polymeric (non-HBCD) flame-retardant modifier.
Surface Burning Characteristics: CAN/ULC-S102: Flame Spread ≤290, Smoke Developed over 500.   USA ASTM E84ª: FSI ≤75, SDI ≤450
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.
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. In addition, a protective barrier or thermal barrier is required to separate EPS products from interior living or conditioned spaces as specified in the appropriate building code.

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")

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

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.

Additional Properties of EPS

Expanded polystyrene (EPS) resists 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.
Max. service temperature: Long-Term Exposure 75°C [167°F]; Intermittent Exposure 80°C [176°F] Thermal expansion coefficient: 5-7 • 10-5/°K
Limiting Oxygen Index: min. 24% per ASTM D2863. Airfoam's EPS for construction applications contains a polymeric (non-HBCD) flame-retardant modifier.
Surface Burning Characteristics: CAN/ULC-S102: Flame Spread ≤290, Smoke Developed over 500.   USA ASTM E84ª: FSI ≤75, SDI ≤450
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.
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. In addition, a protective barrier or thermal barrier is required to separate EPS products from interior living or conditioned spaces as specified in the appropriate building code.

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
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) resists mold & fungi 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) 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.