This specification covers in-situ applied, single-pack, moisture-triggered, aliphatic polyurethanes intended to form an elastomeric single-ply roofing membrane, once cured. The cured membrane may or may not contain a reinforcing material. The product, as manufactured, shall be in liquid form for application by brush, roller, or spray equipment. In-place roof system design criteria such as fire resistance, material compatibility, and uplift resistance, among others, are beyond the scope of this specification. Wet coatings shall be tested and shall conform to liquid property requirements as to viscosity, volume and weight of solids, and sag resistance. Dry films shall also be tested and conform to physical property requirements, as follows: tensile strength; elongation; accelerated weathering; water vapor transmission permeability and permeance; mandrel bend flexibility; tear resistance; Taber abrasion resistance; indentation hardness; dynamic and static puncture resistance; and adhesion bond strength.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 This specification covers in-situ applied, single-pack, moisture-triggered, aliphatic polyurethanes intended to form an elastomeric single-ply membrane, once cured. The cured membrane may or may not contain a reinforcing material.

1.2 Single-pack, moisture-triggered, aliphatic polyurethanes are characterized by their ability to use moisture to trigger the curing process only.

1.3 The tests and property limits used to characterize the liquid material and cured membrane are values intended to ensure minimum quality. In-place roof system design criteria such as fire resistance, material compatibility, and uplift resistance, among others, are factors that shall be considered but are beyond the scope of this specification.

1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

C578 Specification for Rigid, Cellular Polystyrene Thermal Insulation

C717 Terminology of Building Seals and Sealants

D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers--Tension

D522 Test Methods for Mandrel Bend Test of Attached Organic Coatings

D624 Test Method for Tear Strength of Conventional Vulcanized Rubber and Thermoplastic Elastomers

D1079 Terminology Relating to Roofing and Waterproofing

D2240 Test Method for Rubber Property--Durometer Hardness

D5602 Test Method for Static Puncture Resistance of Roofing Membrane Specimens

D5635 Test Method for Dynamic Puncture Resistance of Roofing Membrane Specimens

E96/E96M Test Methods for Water Vapor Transmission of Materials

G154 Practice for Operating Fluorescent Light Apparatus for UV Exposure of Nonmetallic Materials

Keywords

aliphatic polyurethane ; elastomeric polyurethane; moisture trigger polyurethane; roof waterproofing ; single-pack; Elastomeric roofing membranes; Roofing membranes--specifications;

ICS Code

ICS Number Code 91.100.50 (Binders. Sealing materials)

Citing ASTM Standards

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