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The specification covers fiber – or fabric-reinforced non-vulcanized polymer sheets made from chlorosulfonated polyethylene (CSM), intended to be used as a single-layer roof film exposed to weather. Design criteria for on-site roof systems, such as fire resistance, field joint strength, impact/puncture resistance, material compatibility, and heave resistance, are beyond the scope of this Code. The backing or reinforcement plate shall conform to the following physical properties: thickness; Breaking strength; Extend; Tear strength; Low temperature bending; Linear size change; Layer adhesion; Hydrostatic resistance; Ozone resistance; And weather resistance. On the other hand, the coated part of the weather-resistant side of the plate contains neither backing nor internal reinforcement materials, and should adhere to the following physical properties: tensile strength; Extend; Tear resistance; Ozone resistance; And water absorption.

ASTM D5019-2011 Standard Specification for Reinforced CSM Sheets (Chloro-sulfonated Polyethylene) for Single-layer Roof Films

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1.1 This specification covers reinforced non-vulcanized polymer sheets (see note 1) made from chlorosulfonated polyethylene (CSM), intended for use as a single layer roof film exposed to weather. The sheet shall be reinforced with fiber or fabric.

The term CSPE is commonly used in the roofing industry.

1.1.1 The polymers used in these sheets have thermoplastic properties when installed. The chlorosulfonated polyethylene will be vulcanized in situ under environmental conditions.

1.2 The test and performance limits used to characterize these sheets are minimum.

1.2.1 Design criteria for cast-in-place roof systems, such as fire resistance, field joint strength, impact/puncture resistance, material compatibility and pull resistance, are factors that need to be considered but are beyond the scope of this specification.

1.3 Values expressed in SI units shall be considered standard. The values given in parentheses are for reference only.

1.4 The following precautionary warnings relate only to the test methods section of Section 8 of this specification: This standard is not intended to address all safety concerns, if any, associated with its use. It is the responsibility of users of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory restrictions prior to use.