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Significance and Use
5.1 Although infrared imaging systems have the potential to determine many factors concerning the thermal performance of a wall, roof, floor, or ceiling, the emphasis in this practice is on determining whether insulation is missing or whether an insulation installation is malfunctioning. Anomalous thermal images from other apparent causes are not required to be recorded; however, if recorded as supplemental information, their interpretation is capable of requiring procedures and techniques not presented in this practice.
1.1 This practice is a guide to the proper use of infrared imaging systems for conducting qualitative thermal inspections of building walls, ceilings, roofs, and floors, framed in wood or metal, that contain insulation in the spaces between framing members. This procedure allows the detection of cavities where insulation is inadequate or missing and allows identification of areas with apparently adequate insulation.
1.2 This practice offers reliable means for detecting suspected missing insulation. It also offers the possibility of detecting partial-thickness insulation, improperly installed insulation, or insulation damaged in service. Proof of missing insulation or a malfunctioning envelope requires independent validation. Validation techniques, such as visual inspection or in-situ R-value measurement, are beyond the scope of this practice.
1.3 This practice is limited to frame construction even though thermography is used on all building types. (ISO 6781)
1.4 Instrumentation and calibration required under a variety of environmental conditions are described. Instrumentation requirements and measurement procedures are considered for inspections from both inside and outside the structure. Each vantage point offers visual access to areas hidden from the other side.
1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.6 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. Specific precautionary statements are given in and .
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C168 Terminology Relating to Thermal Insulation
E1213 Practice for Minimum Resolvable Temperature Difference for Thermal Imaging Systems
ISO StandardsISO 6781 :1983 Thermal InsulationQualitative detection of Thermal Irregularities in Building EnvelopesInfrared Method
ICS Number Code 91.080.20 (Timber structures); 91.080.99 (Other structures)
UNSPSC Code 30141500(Thermal insulation)
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ASTM C1060-11a(2015), Standard Practice for Thermographic Inspection of Insulation Installations in Envelope Cavities of Frame Buildings, ASTM International, West Conshohocken, PA, 2015, www.astm.orgBack to Top