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ASTM C1149-11

(Specification)

Standard Specification for Self-Supported Spray Applied Cellulosic Thermal Insulation

Standard Specification for Self-Supported Spray Applied Cellulosic Thermal Insulation

ABSTRACT
This specification covers self-supported spray applied cellulosic thermal insulation for use as thermal insulation or acoustical absorbent material, or both. The chemically-treated cellulosic materials that are also covered in this specification are used for pneumatic applications operating within a specific temperature range. The materials are classified into two types based on the type of adhesive used and exposure of the application. Specimens for testing should be prepared and tested using the prescribed methods and should conform to the specified values of density, thermal resistance, surface bonding characteristics, adhesive strength, cohesive strength, smoldering combustion, fungi resistance, corrosion, moisture vapor absorption, odor, flame resistance permanency, substrate deflection, and air erosion.
SCOPE
1.1 The specification covers the physical properties of self-supported spray applied cellulosic fibers intended for use as thermal insulation or an acoustical absorbent material, or both.
1.2 This specification covers chemically treated cellulosic materials intended for pneumatic applications where temperatures do not exceed 82.2°C and where temperatures will routinely remain below 65.6°C.
1.2.1 Type I—Material applied with liquid adhesive and suitable for either exposed or enclosed applications.  
1.2.2 Type II—Materials containing a dry adhesive that is activated by water during installation and intended only for enclosed or covered applications.
1.3 This is a material specification only and is not intended to deal with methods of application that are supplied by the manufacturer.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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.

General Information

Status
Historical
Publication Date
14-May-2011
ICS
91.120.10 - Thermal insulation of buildings
Technical Committee
C16 - Thermal Insulation
Drafting Committee
C16.23 - Blanket and Loose Fill Insulation
Current Stage
Ref Project

Relations

Replaces
ASTM C1149-08 - Standard Specification for Self-Supported Spray Applied Cellulosic Thermal Insulation
Effective Date
15-May-2011
Referred By
ASTM C1014-17 - Standard Specification for Spray-Applied Mineral Fiber Thermal and Sound Absorbing Insulation
Effective Date
15-May-2011
Referred By
ASTM C1497-16 - Standard Specification for Cellulosic Fiber Stabilized Thermal Insulation
Effective Date
15-May-2011
Referred By
ASTM C1558-19 - Standard Guide for Development of Standard Data Records for Computerization of Thermal Transmission Test Data for Thermal Insulation
Effective Date
15-May-2011

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REDLINE ASTM C1149-11 - Standard Specification for Self-Supported Spray Applied Cellulosic Thermal InsulationREDLINE ASTM C1149-11 - Standard Specification for Self-Supported Spray Applied Cellulosic Thermal Insulation
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C1149 −11
Standard Specification for
1
Self-Supported Spray Applied Cellulosic Thermal Insulation
This standard is issued under the fixed designation C1149; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope C518Test Method for Steady-State Thermal Transmission
Properties by Means of the Heat Flow Meter Apparatus
1.1 The specification covers the physical properties of
C739Specification for Cellulosic Fiber Loose-Fill Thermal
self-supported spray applied cellulosic fibers intended for use
Insulation
as thermal insulation or an acoustical absorbent material, or
C1363Test Method for Thermal Performance of Building
both.
Materials and Envelope Assemblies by Means of a Hot
1.2 This specification covers chemically treated cellulosic
Box Apparatus
materials intended for pneumatic applications where tempera-
E84Test Method for Surface Burning Characteristics of
tures do not exceed 82.2°C and where temperatures will
Building Materials
routinely remain below 65.6°C.
E605Test Methods for Thickness and Density of Sprayed
1.2.1 Type I—Material applied with liquid adhesive and
Fire-Resistive Material (SFRM) Applied to Structural
suitable for either exposed or enclosed applications.
Members
1.2.2 Type II—Materials containing a dry adhesive that is
E736Test Method for Cohesion/Adhesion of Sprayed Fire-
activated by water during installation and intended only for
Resistive Materials Applied to Structural Members
enclosed or covered applications.
E759Test Method for Effect of Deflection on Sprayed
Fire-Resistive Material Applied to Structural Members
1.3 This is a material specification only and is not intended
to deal with methods of application that are supplied by the E859Test Method forAir Erosion of Sprayed Fire-Resistive
Materials (SFRMs) Applied to Structural Members
manufacturer.
1.4 The values stated in SI units are to be regarded as
3. Terminology
standard. No other units of measurement are included in this
standard. 3.1 Definitions—Definitions in Terminology C168 shall ap-
ply in this specification.
1.5 This standard does not purport to address all of the
3.2 Definitions of Terms Specific to This Standard:
safety concerns, if any, associated with its use. It is the
3.2.1 constant mass—no change in successive weighings in
responsibility of the user of this standard to establish appro-
excess of 0.5% of specimen mass taken at 4-h intervals unless
priate safety and health practices and determine the applica-
otherwise specified.
bility of regulatory limitations prior to use.
3.2.2 cured—the state of the finished product after it has
2. Referenced Documents
achieved constant mass.
2
2.1 ASTM Standards:
3.2.3 curing—the process in which the liquid vehicle is
C168Terminology Relating to Thermal Insulation
removed. Normally achieved in ambient building conditions
C177Test Method for Steady-State Heat Flux Measure-
with forced air convection to hasten the evaporation process.
ments and Thermal Transmission Properties by Means of
3.2.4 prepared sample—samples prepared in accordance
the Guarded-Hot-Plate Apparatus
with Section 5 and cured to constant mass prior to conducting
thespecifictests.Thepreparedsamples,afterreachingconstant
mass,asdefinedin3.2.1,shallhaveadensitywithin 610%of
1
This specification is under the jurisdiction of ASTM Committee C16 on
the manufacturer’s recommended design density.
Thermal Insulation and is the direct responsibility of Subcommittee C16.23 on
Blanket and Loose Fill Insulation.
3.2.5 self supporting—a product that can be tested by the
Current edition approved May 15, 2011. Published August 2011. Originally
criteria imposed by this specification and that will require no
approved in 1990. Last previous edition approved in 2008 as C1149-08. DOI:
supportotherthanitselforthesubstratetowhichitisattached.
10.1520/C1149-11.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3.2.6 specimen—definition of specimen as used in this
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
specification shall be the same as that for prepared sample in
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. 3.2.4.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
C1149−11
3.2.7 sprayed fiber—chemicallytreatedcellulosicmaterials, 4.11.1 Substrate Deflection—Type I applied product shall
that are pneumatically conveyed and mixed with water or not spall, crack, or delaminate when tested in accordance wit
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:C1149–08 Designation: C1149 – 11
Standard Specification for
1
Self-Supported Spray Applied Cellulosic Thermal Insulation
This standard is issued under the fixed designation C1149; 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
1.1 The specification covers the physical properties of self-supported spray applied cellulosic fibers intended for use as thermal
insulation or an acoustical absorbent material, or both.
1.2 This specification covers chemically treated cellulosic materials intended for pneumatic applications where temperatures do
not exceed 82.2°C and where temperatures will routinely remain below 65.6°C.
1.2.1 Type I—Material applied with liquid adhesive and suitable for either exposed or enclosed applications.
1.2.2 Type II—Materials containing a dry adhesive that is activated by water during installation and intended only for enclosed
or covered applications.
1.3 This is a material specification only and is not intended to deal with methods of application that are supplied by the
manufacturer.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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
2
2.1 ASTM Standards:
C168 Terminology Relating to Thermal Insulation
C177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the
Guarded-Hot-Plate Apparatus
C518 Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
C739 Specification for Cellulosic Fiber Loose-Fill Thermal Insulation
C1363 Test Method for Thermal Performance of Building Materials and Envelope Assemblies by Means of a Hot Box
Apparatus
E84 Test Method for Surface Burning Characteristics of Building Materials
E605 Test Methods for Thickness and Density of Sprayed Fire-Resistive Material (SFRM) Applied to Structural Members
E736 Test Method for Cohesion/Adhesion of Sprayed Fire-Resistive Materials Applied to Structural Members
E759 Test Method for Effect of Deflection on Sprayed Fire-Resistive Material Applied to Structural Members
E859 Test Method for Air Erosion of Sprayed Fire-Resistive Materials (SFRMs) Applied to Structural Members
3. Terminology
3.1 Definitions—Definitions in Terminology C168 shall apply in this specification.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 constant mass—no change in successive weighings in excess of 0.5 % of specimen mass taken at 4-h intervals unless
otherwise specified.
3.2.2 cured—the state of the finished product after it has achieved constant mass.
3.2.3 curing—theprocessinwhichtheliquidvehicleisremoved.Normallyachievedinambientbuildingconditionswithforced
air convection to hasten the evaporation process.
1
ThisspecificationisunderthejurisdictionofASTMCommitteeC16onThermalInsulationandisthedirectresponsibilityofSubcommitteeC16.23onBlanketandLoose
Fill Insulation.
´1
Current edition approved Dec. 1, 2008. Published January 2009. Originally approved in 1990. Last previous edition approved in 2006 as C1149-06 . DOI:
10.1520/C1149-08.
Current edition approved May 15, 2011. Published August 2011. Originally approved in 1990. Last previous edition approved in 2008 as C1149 - 08. DOI:
10.1520/C1149-11.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C1149 – 11
3.2.4 prepared sample—samples prepared in accordance with Section 5 and cured to constant mass prior to conducting the
specific tests. The prepared samples, after reaching constant mass, as defined in 3.2.1, shall have a density within 610 % of the
manufacturer’s recommended design density.
3.2.5 self supporting—a product that can be tested by the criteria impos
...

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1.2 Thermal properties shall be determined as a function of temperature by standard test methods. (Test Methods C177, C201, C335/C335M, C518, C745, C1114, C1363, Guide C653, and Practice C687, all in combination with Practice C1045.)  
Note 1: Standard referenced materials are needed to span the temperature range of the tests.  
1.3 This practice recommends standard conditions for use in testing and evaluating thermal properties as a function of temperature by standard test methods.  
1.4 General applications of thermal insulations include:  
1.4.1 Building envelopes,  
1.4.2 Mechanical systems or processes, and  
1.4.3 Building and industrial insulations.  
1.5 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.  
1.6 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.7 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.

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ASTM
ASTM C1919-22(Practice)
Standard Practice for Measurement of the Steady-State Thermal Transmission Properties of Small Specimens Using the Heat Flow Meter Apparatus

SIGNIFICANCE AND USE
5.1 Thermal conductivity measurements on small insulation specimens are important during new product development processes or when larger specimens cannot be collected during forensic investigation (that is, failure analysis) (1, 2).  
5.2 Numerous research projects have recently been initiated to develop insulation materials that have very high thermal resistivities (greater than 83 (m K)/W). Projects ranging from coatings to improve the thermal performance of single pane/layer glazing systems to the development of novel insulation products for building envelopes are being undertaken (1-4). All these projects have struggled in the development of new material technologies due to the difficulty associated with the measurement of thermal conductivity of small sections (approximately 0.025 m by 0.025 m) of high thermal resistance materials. As new materials are being developed, the size of each test specimen impacts the cost of development. Most of the existing test equipment and the methods do not align with the researcher’s need; the equipment requires a large specimen size is time consuming, and expensive to produce.  
5.3 This practice provides a standardized procedure to enable the thermal characterization of small specimens of insulation materials. Accurate, and reliable thermal metrology to assess thermal properties of new insulation materials, such as novel very low thermal conductivity (  
5.4 The ratio of the area of the specimen and the heat flux transducer has a significant impact on the uncertainty of the results obtained from this practice. As the specimen area decreases this ratio decreases, a smaller percentage of the total heat flow is associated with the unknown specimen. Information from the literature (4) shows that some heat-flow-meter apparatus, generally not available commercially and used by the research laboratories only, can be modified to change out the heat flux transducer so that transducers of varying sizes can be deployed. The observat...
SCOPE
1.1 This practice covers the measurement of steady state thermal transmission properties of the small flat slab thermal insulation specimen using a heat-flow-meter apparatus.  
1.2 This practice provides a supplemental procedure for use in conjunction with Test Method C518 for testing a small specimen. This practice is limited to only small specimens and, in all other particulars, the requirements of Test Method C518 apply.  
1.3 This practice characterizes small specimens having lateral dimensions less than the lateral dimensions of the heat flux transducer used to measure the heat flow. The procedure in Test Method C518 shall be used for specimens having lateral dimensions equal to or larger than the lateral dimensions of the heat flux transducer.
Note 1: The lower limit for specimen size is typically determined by the user for their particular material. As an example, Ref. (1)2 established a lower limit for specimen dimensions of 0.1 m by 0.1 m for several different thermal insulation materials for a 0.3 m by 0.3 m heat-flow-meter apparatus having a heat flux transducer 0.15 m by 0.15 m.  
1.4 This practice is intended only for research purposes, in particular, when larger specimens are unavailable. This practice shall not be used in conjunction with Test Method C518 for certification testing of products; compliance with ASTM Specifications; or compliance with regulatory or building code requirements.  
1.5 The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this practice.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.7 This international standard was developed in accordance with internationall...

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ASTM C1199-22(Test Method)
Standard Test Method for Measuring the Steady-State Thermal Transmittance of Fenestration Systems Using Hot Box Methods

SIGNIFICANCE AND USE
4.1 This test method details the calibration and testing procedures and necessary additional temperature instrumentation required in applying Test Method C1363 to measure the thermal transmittance of fenestration systems mounted vertically in the thermal chamber.  
4.2 The thermal transmittance of a test specimen is affected by its size and three-dimensional geometry. Care must be exercised when extrapolating to product sizes smaller or larger than the test specimen. Therefore, it is recommended that fenestration systems be tested at the recommended sizes specified in Practice E1423 or NFRC 100.  
4.3 Since both temperature and surface heat transfer coefficient conditions affect results, use of recommended conditions will assist in reducing confusion caused by comparing results of tests performed under dissimilar conditions. Standardized test conditions for determining the thermal transmittance of fenestration systems are specified in Practice E1423 and Section 6.2. The performance of a test specimen measured at standardized test conditions is potentially different than the performance of the same fenestration product when installed in the wall of a building located outdoors. Standardized test conditions often represent extreme summer or winter design conditions, which are potentially different than the average conditions typically experienced by a fenestration product installed in an exterior wall. For the purpose of comparison, it is essential to calibrate with surface heat transfer coefficients on the Calibration Transfer Standard (CTS) which are as close as possible to the conventionally accepted values for building design; however, this procedure can be used at other conditions for research purposes or product development.  
4.4 Similarly, it would be desirable to have a surround panel that closely duplicates the actual wall where the fenestration system would be installed. Since there are such a wide variety of fenestration system openings in North American...
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1.1 This test method covers requirements and guidelines and specifies calibration procedures required for the measurement of the steady-state thermal transmittance of fenestration systems installed vertically in the test chamber. This test method specifies the necessary measurements to be made using measurement systems conforming to Test Method C1363 for determination of fenestration system thermal transmittance.  
Note 1: This test method allows the testing of projecting fenestration products (that is, garden windows, skylights, and roof windows) installed vertically in a surround panel. Current research on skylights, roof windows, and projecting products hopefully will provide additional information that can be added to the next version of this test method so that skylight and roof windows can be tested horizontally or at some angle typical of a sloping roof.  
1.2 This test method refers to the thermal transmittance, U of a fenestration system installed vertically in the absence of solar radiation and air leakage effects.
Note 2: The methods described in this document may also be adapted for use in determining the thermal transmittance of sections of building wall, and roof and floor assemblies containing thermal anomalies, which are smaller than the hot box metering area.  
1.3 This test method describes how to determine the thermal transmittance, US of a fenestration product (also called test specimen) at well-defined environmental conditions. The thermal transmittance is also a reported test result from Test Method C1363. If only the thermal transmittance is reported using this test method, the test report must also include a detailed description of the environmental conditions in the thermal chamber during the test as outlined in 10.1.14.  
1.4 For rating purposes, this test method also describes how to calculate a standardized thermal transmittance,  UST, which can be used to compare test results from labor...

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ASTM
ASTM C1155-95(2021)(Practice)
Standard Practice for Determining Thermal Resistance of Building Envelope Components from the In-Situ Data

SIGNIFICANCE AND USE
5.1 Significance of Thermal Resistance Measurements—Knowledge of the thermal resistance of new buildings is important to determine whether the quality of construction satisfies criteria set by the designer, by the owner, or by a regulatory agency. Differences in quality of materials or workmanship may cause building components not to achieve design performance.  
5.1.1 For Existing Buildings—Knowledge of thermal resistance is important to the owners of older buildings to determine whether the buildings should receive insulation or other energy-conserving improvements. Inadequate knowledge of the thermal properties of materials or heat flow paths within the construction or degradation of materials may cause inaccurate assumptions in calculations that use published data.  
5.2 Advantage of In-Situ Data—This practice provides information about thermal performance that is based on measured data. This may determine the quality of new construction for acceptance by the owner or occupant or it may provide justification for an energy conservation investment that could not be made based on calculations using published design data.  
5.3 Heat Flow Paths—This practice assumes that net heat flow is perpendicular to the surface of the building envelope component within a given subsection. Knowledge of surface temperature in the area subject to measurement is required for placing sensors appropriately. Appropriate use of infrared thermography is often used to obtain such information. Thermography reveals nonuniform surface temperatures caused by structural members, convection currents, air leakage, and moisture in insulation. Practices C1060 and C1153 detail the appropriate use of infrared thermography. Note that thermography as a basis for extrapolating the results obtained at a measurement site to other similar parts of the same building is beyond the scope of this practice.  
5.4 User Knowledge Required—This practice requires that the user have knowledge that the data empl...
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1.1 This practice covers how to obtain and use data from in-situ measurement of temperatures and heat fluxes on building envelopes to compute thermal resistance. Thermal resistance is defined in Terminology C168 in terms of steady-state conditions only. This practice provides an estimate of that value for the range of temperatures encountered during the measurement of temperatures and heat flux.  
1.2 This practice presents two specific techniques, the summation technique and the sum of least squares technique, and permits the use of other techniques that have been properly validated. This practice provides a means for estimating the mean temperature of the building component for estimating the dependence of measured R-value on temperature for the summation technique. The sum of least squares technique produces a calculation of thermal resistance which is a function of mean temperature.  
1.3 Each thermal resistance calculation applies to a subsection of the building envelope component that was instrumented. Each calculation applies to temperature conditions similar to those of the measurement. The calculation of thermal resistance from in-situ data represents in-service conditions. However, field measurements of temperature and heat flux may not achieve the accuracy obtainable in laboratory apparatuses.  
1.4 This practice permits calculation of thermal resistance on portions of a building envelope that have been properly instrumented with temperature and heat flux sensing instruments. The size of sensors and construction of the building component determine how many sensors shall be used and where they should be placed. Because of the variety of possible construction types, sensor placement and subsequent data analysis require the demonstrated good judgement of the user.  
1.5 Each calculation pertains only to a defined subsection of the building envelope. Combining results from different subsections to characterize...

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ASTM C1340/C1340M-10(2021)(Practice)
Standard Practice for Estimation of Heat Gain or Loss Through Ceilings Under Attics Containing Radiant Barriers by Use of a Computer Program

SIGNIFICANCE AND USE
5.1 Manufacturers of radiant barriers express the performance of their products in terms of the total hemispherical emittance. The purpose of a radiant barrier is to decrease the radiation heat transfer across the attic air space, and hence, to decrease the heat loss or gain through the ceiling below the attic. The amount of decrease in heat flow will depend upon a number of factors, such as weather conditions, amount of mass or reflective insulation in the attic, solar absorptance of the roof, geometry of the attic and roof, and amount and type of attic ventilation. Because of the infinite combinations of these factors, it is not practical to publish data for each possible case.  
5.2 The calculation of heat loss or gain of a system containing radiant barriers is mathematically complex, and because of the iterative nature of the method, it is best handled by computers.  
5.3 Computers are now widely available to most producers and consumers of radiant barriers to permit the use of this practice.  
5.4 The user of this practice may wish to modify the data input to represent accurately the structure. The computer program also may be modified to meet individual needs. Also, additional calculations may be desired, for example, to sum the hourly heat flows in some fashion to obtain estimates of seasonal or annual energy usages. This might be done using the hourly data as inputs to a whole-house model, and by choosing house balance points to use as cutoff points in the summations.
SCOPE
1.1 This practice covers the estimation of heat gain or loss through ceilings under attics containing radiant barriers by use of a computer program. The computer program included as an adjunct to this practice provides a calculational procedure for estimating the heat loss or gain through the ceiling under an attic containing a truss or rafter mounted radiant barrier. The program also is applicable to the estimation of heat loss or gain through ceilings under an attic without a radiant barrier. This procedure utilizes hour-by-hour weather data to estimate the hour-by-hour ceiling heat flows. The interior of the house below the ceiling is assumed to be maintained at a constant temperature. At present, the procedure is applicable to sloped-roof attics with rectangular floor plans having an unshaded gabled roof and a horizontal ceiling. It is not applicable to structures with flat roofs, vaulted ceilings, or cathedral ceilings. The calculational accuracy also is limited by the quality of physical property data for the construction materials, principally the insulation and the radiant barrier, and by the quality of the weather data.  
1.2 Under some circumstances, interactions between radiant barriers and HVAC ducts in attics can have a significant effect on the thermal performance of a building. Ducts are included in an extension of the computer model given in the appendix.  
1.3 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.  
1.4 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.

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