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Korolite Rigid Insulation

Rigid Foam Insulation

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 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, rot and mold with proper detailing & installation. All Korolite® types are available in various standard and customized sizes & thicknesses and can be factory-tapered.


   Exceptional Insulation Value

Budget-friendly, stable long-term Thermal Insulation resists moisture and many other adverse effects at the highest insulation value per dollar spent

   Cozy, Healthy Indoor Environments

Continuous insulation blanket with no formaldehyde nor off-gassing during normal use, does not promote the growth of mold or mildew

   A Breeze to Design & Install

Design flexibility, versatility, and support for all your project needs, available in many compressive strengths and thicknesses. For high jobsite productivity, EPS products are lightweight & easy to handle and cut.

   Environmentally Responsible

Excellent durability, recycled content and low environmental impacts using air as insulator instead of CFC, HCFC, or HFC gases.

Material Properties of Korolite® Insulation Types
Property¹ Units Korolite® Types Test Std.
100 130 160 200 250 400 600
Third-Party Certified Type Canada 1 1+ 2 2+ 3     CAN/ULC-S701
USA I VIII II II+ IX XIV XV ASTM C578
Compressive Resistance2 Minimum
@ 10% Deformation psi 10 13 16 20 25 40 60 ASTM D1621
Proc.A
kPa 70 90 110 140 172 276 414
Thermal Resistance3,4 Minimum at mean temperatures of:
R-value/inch thickness ft²•hr•°F/ (BTU•in) 25°F: 6 4.2 4.4 4.6 4.6 4.8 4.8 4.8 ASTM C518
or C177
40°F: 6 4.0 4.2 4.4 4.4 4.6 4.6 4.6
75°F: 3.75 3.8 4.04 4.1 4.27 4.27 4.3
RSI / 25mm
thickness
m²•°C/ (W•25mm) -4°C: 6 0.73 0.76 0.80 0.81 0.83 0.83 0.83
4°C: 6 0.69 0.73 0.76 0.77 0.80 0.80 0.80
24°C: 0.65 0.66 0.70 0.71 0.74 0.74 0.75
Water Vapor Permeance4
Maximum @ 1" thick
perm 5.0 3.5 3.5 3.3 2.3 2.3 2.3 ASTM E96 desiccant
ng/(Pa•s•m²) 287 201 201 190 132 132 132
Water Absorption5
Maximum
% by
volume
USA 4 3 3 3 2 2 2 ASTM C272, 1 day
Canada 6 6 4 4 2     ASTM D2842, 4 days
Flexural Strength
Minimum
psi 25 30 35 40 50 60 75 ASTM C203
Proc.B
kPa 172 208 240 280 345 414 517
Density7 Nominal6 lbs/ft³ 1 1.65 2 3 ASTM C303 or D1622
Minimum7 kg/m³ 14.4 18.4 21.6 24 28.8 38.4 48

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 methods for water absorption use complete submersion under a head of water for 24 or 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.  7 Minimum Density only applicable to USA-bound products per ASTM C578 (not Canada-bound products per CAN/ULC-S701).

The Canadian CAN/ULC-S701 "Standard for Thermal Insulation, Polystyrene, Boards and Pipe Covering" provides material properties of various EPS Types:

Property1 Units CAN/ULC-S701 Types ASTM Test
1
2
3
Compressive Resistance
Minimum @ 10% Deformation
kPa 70 110 140 D1621
Proc.A
psi 10 16 20
Thermal Resistance2
RSI / 25mm thickness
Minimum @ 24°C
m²•°C/ (W•25mm)0.650.700.74 C518
Thermal Resistance
R-Value / inch thickness
Minimum @ 75°F
ft²•hr•°F/ (BTU•in)3.754.044.27 C518
Flexural Strength
Minimum
kPa 170 240 300 C203
Proc.B
psi 25 35 44
Water Vapor Permeance2
Maximum at 25mm thickness
ng/(Pa•s•m²)300200130 E96
perms5.2 3.52.3
Water Absorption3
Maximum
% by
volume
6.0 4.0 2.0 D2842
Dimensional Stability % linear
change max.
1.51.51.5 D2126 7 Days
@ 70±2°C
Limiting Oxygen Index % min.242424 D2863

1 The test methods used to determine the above 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 25mm thick samples with natural skins intact. Better values will result for thicker materials.  3 The lab-test method for water absorption uses complete submersion under a 2-inch 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.

The American ASTM C578 "Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation" provides material properties of various EPS Types:

Property Units ASTM C578 Types ASTM Test
I VIII II IX XIV XV
Compressive Resistance²
Minimum @ 10% Deformation
psi 10 13 15 25 40 60 D1621
Proc.A
kPa 69 90 104 173 276 414
Thermal Resistance1,2,3
R-value / inch thickness
Minimum @ 75°F [24°C]
ft²•hr•°F/ (BTU•in) 3.6 3.8 4.0 4.2 4.2 4.3 C518
Flexural Strength²
Minimum
psi 25 30 35 50 60 75 C203
Proc.B
kPa 173 208 270 345 414 517
Water Vapor Permeance1,2
Maximum @ 1 inch [25.4mm] thick
perms 5.0 3.5 3.5 2.5 2.5 2.5 E96
ng/(Pa•s•m²) 287 201 201 143 143 143
Water Absorption2,4
Maximum
% by
volume
4 3 3 2 2 2 C272
Dimensional Stability² % linear
change max.
2 2 2 2 2 2 D2126 7 Days
@ 70±2°C
Limiting Oxygen Index² % min. 24 24 24 24 24 24 D2863
Density - Nominal lbs/ft³ (PCF) 1 2 3  
Density²
Minimum
lbs/ft³ (PCF) 0.9 1.15 1.35 1.8 2.4 3.0 C303 or D1622
kg/m³ 14.4 18.4 21.6 28.8 38.4 48
Thermal Resistance at Additional Mean Temperatures1,2,3 C518
R-value / inch thickness
Minimum ft²•hr•°F/ (BTU•in)
@ 40°F [4.4°C] 4.0 4.2 4.4 4.6 4.6  
@ 25°F [-4°C] 4.2 4.4 4.6 4.8 4.8  

¹ Values are for 1 inch [25.4mm] thick samples with natural skins intact. Better values will result for thicker materials.  ² The test methods used to determine the above 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. ³ R means resistance to heat flow. The higher the R-value, the greater the insulating power. 4 The lab-test method for water absorption uses complete submersion under a 1-inch head of water for 24 hours, so the values are applicable to specific design requirements only when the end-use conditions are similar to test method requirements.

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
Dimensional Stability¹: max. 1.5% linear change per ASTM D2126 (7 Days @ 70±2°C)
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 ≤295, Smoke Developed Classification over 500.   USA ASTM E84 (UL 723)ª: Flame Spread Index ≤25, Smoke-Developed Index ≤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.
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.


Specify & Install

Korolite® Specifications 100 Types 1, I 130 Types 1+, VIII 160 Types 2, II 200 Types 2+, II+ 250 Types 3, IX 400 Type XIV 600 Type XV

Korolite® Types Overview Korolite® Installation Guide 30-Year Limited Warranty Environmental Product Declaration Shallow Foundations

Intertek

Materials:
Code Evaluation Report Thermal Insulation CAN/ULC-S701, ICC-ES AC12, ASTM C578 with Surface Burning Characteristics CAN/ULC-S102.2, ASTM E84 (UL 723), Intertek Listed & Inspected
Wall Assemblies:
¾ Hour Fire Rating for a Composite Wall Assembly with EPS c.i. CAN/ULC-S101, ASTM E119
Meets NFPA 285 with specific limitations for an Exterior Wall Assembly with EPS c.i.

Underwriters Laboratories

Materials:
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
CDET7.R19427 - Rigid Roof Insulation Fire Resistance Ratings CAN/ULC-S101
Roof Assemblies:
TGKXC - Roof Deck Construction No. C7, C12A, C12B, C38
BXUVC - Roof Fire-Resistance Ratings Design No. R210, R222