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Significance and Use
4.1 Adequate coating thickness (mil thickness) is necessary to protect polyurethane foam from the effects of ultraviolet degradation. This guide outlines general procedures for sampling and measuring the coating thickness by using slit or core samples.
4.2 Thickness of individual lifts of sprayed foam will have a bearing upon foam stability. Core samples are used to determine foam thickness. Compressive strength and core density affect resistance to foot traffic and impact. Specimens from core samples are used to determine these properties using Test Methods D1621 and D1622. Visual examinations of core specimens also indicate the quality of adhesion of the coating and the foam, between foam lifts, and between foam and substrate.
1.1 This guide covers the removal of test specimens from spray polyurethane foam (SPF) roofing systems in the field for the purpose of examination of an existing system and/or quality assurance for new installations. It describes the types and purposes of sample cuts, visual inspection techniques, laboratory physical property tests, and repair of the core and slit sample holes.
1.2 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C1029 Specification for Spray-Applied Rigid Cellular Polyurethane Thermal Insulation
D1079 Terminology Relating to Roofing and Waterproofing
D1621 Test Method for Compressive Properties of Rigid Cellular Plastics
D1622 Test Method for Apparent Density of Rigid Cellular Plastics
D4442 Test Methods for Direct Moisture Content Measurement of Wood and Wood-Base Materials
D6705 Guide for Repair and Recoat of Spray Polyurethane Foam Roofing Systems
ICS Number Code 83.100 (Cellular materials)
UNSPSC Code 13111300(Foams); 30151500(Roofing materials)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D7119 / D7119M-13a, Standard Guide for Sampling Spray Polyurethane Foam and Coating in Roofing, ASTM International, West Conshohocken, PA, 2013, www.astm.orgBack to Top