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Roof Insulation with Rigid Foam

Airfoam offers a wide range of high performance, budget-friendly roof insulation products. Over more than 45 years, Expanded Polystyrene (EPS) roofing insulation became the solution of choice for new and re-roofing needs because of its many benefits.

From flat and custom-tapered Korolite® Insulation to Quad-Deck Insulated Concrete Forms and Geofoam lightweight fill material on green roofs, we have an insulation product for almost every commercial & residential roof type.

Fitting EPS Insulation Boards

Benefits

   Exceptional Insulation Value

Budget-friendly, stable Long-Term Thermal Resistance (LTTR) with the highest insulation value per dollar spent

   Outstanding Performance

Continuous insulation that resists moisture and many other adverse effects, available in many compressive strengths and thicknesses, including custom-tapered for drainage slopes.

   A Breeze to Design & Install

Design flexibility, versatility, and support for custom roofing packages. For high jobsite productivity, EPS roofing products are lightweight & easy to handle and cut.

   Environmentally Responsible

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

Applications

Insulated Roof Decks, Metal/Steel Deck, Concrete Deck, Wood Deck, Roof Gardens, Green Roofs, Attics, Cathedral Ceilings & more

Modified Bitumen (SBS), Single-Ply membrane (TPO, EPDM), and Built-Up Roofing (BUR) Systems

Ballasted Systems, Partially Adhered Roofing Systems (PARS), Adhesive Adhered Roofing Systems (AARS), and Mechanically Attached Roofing Systems (MARS)

Airfoam is an approved supplier for RCABC's Roofstar Guarantees in British Columbia.

Technical Data

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

Environmental Product Declaration  certified by UL Environment

Surface Burning Characteristics CAN/ULC-S102.2 at 2½" thick: 100   160   250

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.

Quad-Deck Insulated Concrete Forms for Roofs Technical Summary & Specs