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ASTM D8231-19

(Practice)

Standard Practice for the Use of a Low Voltage Electronic Scanning System for Detecting and Locating Breaches in Roofing and Waterproofing Membranes

Standard Practice for the Use of a Low Voltage Electronic Scanning System for Detecting and Locating Breaches in Roofing and Waterproofing Membranes

SIGNIFICANCE AND USE
4.1 The failure to correct membrane breaches during and after its installation can cause premature failure of the membrane and damage to the structure. Root causes may include design deficiencies, faulty application of the membrane system, product failure, material incompatibility, and damage by other trades. Roof designs incorporating a waterproof membrane under overburden must be tested for breaches before overburden is installed.  
4.2 This practice describes a low voltage (less than 50 V as defined by NFPA 70), dual sweep, scanning method using electronic leak detection to locate breaches in waterproof membranes. The method described includes testing procedures designed to provide a part of the quality assurance of roofing and waterproofing membranes.  
4.3 The methods described in this practice may also be used for forensic testing of existing roofing and waterproofing membranes; however, specific limitations apply that are described later.
SCOPE
1.1 This practice describes standard procedures for using an electronic scanning system to locate membrane breaches on both horizontal and vertical surfaces to locate potential leaks in exposed roofing and waterproofing membranes.  
1.2 This practice addresses the need for a detailed technical description of a scanning method and procedures that are used to test and verify the integrity of membranes.  
1.3 This practice is not intended to replace visual or other methods of inspection. It is to be used in conjunction with other methods of roof inspection when specified.  
1.4 This practice requires that the detection and location equipment, procedures, and survey parameters used are calibrated to meet established minimum leak detection sensitivity. The detection sensitivity calibration must be verified on a regular basis using the manufacturer’s procedures to assure maximum confidence in the results.  
1.5 Scanning surveys can be used on membranes installed on roofs, plaza decks, pools, water features, covered reservoirs, and other roofing and waterproofing applications.  
1.6 This practice is applicable for membranes made of electrically insulating materials and is used on certain moderately conductive membranes (see Test Method D4496).  
1.7 This practice provides a description of the scanning method and equipment for locating membrane breaches using electric conductance and is intended to be used in conjunction with the manufacturer’s instructions for the proper operation and use of the equipment.  
1.8 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
30-Jun-2019
ICS
91.100.50 - Binders. Sealing materials
Technical Committee
D08 - Roofing and Waterproofing
Drafting Committee
D08.22 - Waterproofing and Dampproofing Systems
Current Stage
Ref Project

Relations

Refers
ASTM D1079-16 - Standard Terminology Relating to Roofing and Waterproofing
Effective Date
01-Feb-2016
Refers
ASTM D1079-18 - Standard Terminology Relating to Roofing and Waterproofing
Effective Date
15-Dec-2018
Refers
ASTM D1079-18e1 - Standard Terminology Relating to Roofing and Waterproofing
Effective Date
15-Dec-2018
Refers
ASTM D1079-20 - Standard Terminology Relating to Roofing and Waterproofing
Effective Date
01-May-2020

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ASTM D8231-19 - Standard Practice for the Use of a Low Voltage Electronic Scanning System for Detecting and Locating Breaches in Roofing and Waterproofing MembranesASTM D8231-19 - Standard Practice for the Use of a Low Voltage Electronic Scanning System for Detecting and Locating Breaches in Roofing and Waterproofing Membranes
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ASTM D8231-19 - Standard Practice for the Use of a Low Voltage Electronic Scanning System for Detecting and Locating Breaches in Roofing and Waterproofing Membranes
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:D8231 −19
Standard Practice for
the Use of a Low Voltage Electronic Scanning System for
Detecting and Locating Breaches in Roofing and
1
Waterproofing Membranes
This standard is issued under the fixed designation D8231; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 1.9 This international standard was developed in accor-
dance with internationally recognized principles on standard-
1.1 This practice describes standard procedures for using an
ization established in the Decision on Principles for the
electronic scanning system to locate membrane breaches on
Development of International Standards, Guides and Recom-
bothhorizontalandverticalsurfacestolocatepotentialleaksin
mendations issued by the World Trade Organization Technical
exposed roofing and waterproofing membranes.
Barriers to Trade (TBT) Committee.
1.2 This practice addresses the need for a detailed technical
description of a scanning method and procedures that are used 2. Referenced Documents
to test and verify the integrity of membranes. 2
2.1 ASTM Standards:
1.3 This practice is not intended to replace visual or other D1079 Terminology Relating to Roofing and Waterproofing
methodsofinspection.Itistobeusedinconjunctionwithother
D4496 Test Method for D-C Resistance or Conductance of
methods of roof inspection when specified. Moderately Conductive Materials
D7877 Guide for Electronic Methods for Detecting and
1.4 This practice requires that the detection and location
Locating Leaks in Waterproof Membranes
equipment, procedures, and survey parameters used are cali-
3
2.2 NFPA Standards:
brated to meet established minimum leak detection sensitivity.
NFPA 70 National Electrical Code
The detection sensitivity calibration must be verified on a
regular basis using the manufacturer’s procedures to assure
3. Terminology
maximum confidence in the results.
3.1 Fordefinitionsofterms,seeTerminologyD1079andthe
1.5 Scanning surveys can be used on membranes installed
terminology section of Guide D7877.
onroofs,plazadecks,pools,waterfeatures,coveredreservoirs,
3.2 Definitions of Terms Specific to This Standard:
and other roofing and waterproofing applications.
3.2.1 membrane scanning, n—a method for locating mem-
1.6 This practice is applicable for membranes made of
brane breaches by passing a leak detection sensor over the
electrically insulating materials and is used on certain moder-
entire surface of the membrane being tested.
ately conductive membranes (see Test Method D4496).
3.2.2 moderately conductive, adj—materials that exhibit a
1.7 This practice provides a description of the scanning 3 7
surface resistivity in the range of 10 to 10 ohms-per-square.
method and equipment for locating membrane breaches using
3.2.3 ohms-per-square, n—the unit of measurement when
electric conductance and is intended to be used in conjunction
measuring the resistance of a thin film of a material using the
with the manufacturer’s instructions for the proper operation
fourpointprobetechnique.Itisequaltotheresistancebetween
and use of the equipment.
two electrodes on opposite sides of a theoretical square. The
1.8 This standard does not purport to address all of the
size of the square is unimportant.
safety concerns, if any, associated with its use. It is the
NOTE 1—Waterproofing membranes tested by electrical conductance
responsibility of the user of this standard to establish appro-
methods may be horizontal, sloped, or vertical.
priate safety, health, and environmental practices and deter-
NOTE 2—Examples of waterproofing membranes included in this
mine the applicability of regulatory limitations prior to use.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
ThispracticeisunderthejurisdictionofASTMCommitteeD08onRoofingand contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Waterproofing and is the direct responsibility of Subcommittee D08.22 on Water- Standards volume information, refer to the standard’s Document Summary page on
proofing and Dampproofing Systems. the ASTM website.
3
Current edition approved July 1, 2019. Published July 2019. DOI: 10.1520/ Available from National Fire Protection Association (NFPA), 1 Batterymarch
D8231-19. Park, Quincy, MA 02169-7471, http://www.nfpa.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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