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Results of Testing of Material Properties of the Product

Property

Requirement

Result

Tensile strength (MPa):

machine direction

Min. 12

25

transverse direction

Min. 8

22

Elongation (%):

machine direction

225

711

transverse direction

350

658

Water vapour permeance (ng/(Pa·s·m2))

Max. 15

0.61

Impact strength (g)

Min. 300

2 600

Outdoor weathering resistance

Retain minimum 50% of tensile elongation strength after exposure to accelerated weathering

Pass

Results of Testing for Comparison of Radon Infiltration through "Radon Guard™" and Prescriptive Gravel

Assembly

Rn Concentration in Dosing Compartment (Bq/m3)

Rn Concentration in Receiving Compartment (Bq/m3)

Result

Floor assembly with 6 mil poly

5 192

342

The test assembly with the RadonBlock™ and butyl joint tape demonstrated lower permeability to Rn compared to the floor assemblies with the 6 mil poly or the 20 mil poly membranes with conventional sheathing joint tape

Floor assembly with 20 mil poly

2 260

384

Floor assembly with "RadonBlock™"

3 362

124

Comparison of Sub-slab Depressurization Communication for Membrane Tests

Assembly

Flow Rate Through Exhaust Fan (L/s)

Pressure Under Concrete Slab (Pa)

Pressure Under Membrane (Pa)

Pressure in Dosing Compartment (Pa)

Pressure in Receiving Compartment (Pa)

Result

Floor assembly with 6 mil poly

26.6

−1.8

−3.1

−30.0

−0.9

"RadonBlock™" 6 mil poly and 20 mil poly membranes produced comparable results during the sub-slab pressure communication tests

Floor assembly with 20 mil poly

25.2

−3.0

−3.0

−29.4

−4.4

Floor assembly with "RadonBlock™"

28.9

−0.6

−3.1

−29.8

−2.3