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Expanded polystyrene embankment LEGERLITE GEO 20

Blocks in various sizes made with EPS beads containing a flame retardant.

Cuts available by order

48’’ x 96’’ x 30’’
48’’ x 192’’ x 30’’

Compressive Strenght (10%)

(ASTM D1621) 140 kPa min. (20,3 lb/in2)


EPS beads should be considered flammable when subjected to a source of intense heat or a constant strong flame. They are vulnerable to petroleum-based solvents and prolonged exposure to ultraviolet radiation.

Ultraviolet Degradation

Prolonged exposure to ultraviolet rays will produce slight discoloration and crumbling of surface. Insulation properties will be reduced minimally unless exposure is long enough to reduce thickness. To avoid ultraviolet degradation, cover block as soon as possible.


  • Conforms to CAN/ULC-S701-01 standards
  • Conforms to CCDG 14301 standard (B1 MTQ insulation)
Physical Properties Imperial Metric TEST GEO20
Thermal resistance: r-value at 75ºF (24ºc) for 1 in (25 mm) thickness (hre.pi2 .°F) / BTU (m2 °C W) / W ASTM: C-518 C-177 0,74 m2 .°C/w/25mm (4.2 h.ft2 .°F/Btu/in)
Compressive strength (min.) at 10% distortion psi (kPa) ASTM: D-1621 140 kPa (20.3 lb/in2 )
Bending strength (min.) psi (kPa) ASTM: C-203 276 kPa (40 lb/in2 )
Dimensional stability: % of linear change (max.) % % ASTM: D-2126 0.50%
Water vapor permeability (max.) - (ng/Pa.s.m2) ASTM: E-96 160 ng/Pa.s.m2 (2.8 perm)
Water absorption (max.) % % ASTM: D-2842 3 %
Coefficient of linear thermal expansion ASTM D-696 6E-5mm/mm/°C 3.5 E-5in/in/°F
Usage temperature (max.) Constant Intermittent 75°C (167°F) 82°C (180°F)
Flame spread CAN/ULC S102.2M ‹ 140
Smoke development CAN/ULC S102.2M ‹ 380