ASTM C1497-24 纤维素纤维稳定隔热材料标准规范

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Designation: C1497 −24
Standard Speciﬁcation for
Cellulosic Fiber Stabilized Thermal Insulation
1
This standard is issued under the ﬁxed designation C1497; 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 This speciﬁcation covers the composition and physical
properties of spray-applied cellulosic ﬁber stabilized thermal
insulation applied to open or closed ceiling spaces, regardless
of slope, where temperatures range from –49 to 194°F (–45 to
90°C).
1.2 Stabilized cellulosic ﬁber thermal insulation is produced
by the addition of adhesive(s) to loose-ﬁll cellulosic ﬁber
insulation. The adhesive(s) are either added to the insulation at
time of manufacture and, if necessary, activated by the addition
of water when installed or the adhesive(s) are otherwise added
to the insulation at the time of installation.
1.3 This is a material speciﬁcation that is not intended to
deal with methods of application that are supplied by the
manufacturer.
1.4 The values stated in inch-pound units are to be regarded
as standard. The SI units given in parentheses are for informa-
tion only.
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 appro-
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
2
C167 Test Methods for Thickness and Density of Blanket or
Batt Thermal Insulations
C168 Terminology Relating to Thermal Insulation
C177 Test Method for Steady-State Heat Flux Measure-
ments and Thermal Transmission Properties by Means of
the Guarded-Hot-Plate Apparatus
C739 Speciﬁcation for Cellulosic Fiber Loose-Fill Thermal
Insulation
C1149 Speciﬁcation for Self-Supported Spray Applied Cel-
lulosic Thermal Insulation
C1304 Test Method for Assessing the Odor Emission of
Thermal Insulation Materials
C1338 Test Method for Determining Fungi Resistance of
Insulation Materials and Facings
E691 Practice for Conducting an Interlaboratory Study to
Determine the Precision of a Test Method
E970 Test Method for Critical Radiant Flux of Exposed Attic
Floor Insulation Using a Radiant Heat Energy Source
3. Terminology
3.1 Deﬁnitions—For deﬁnitions of terms used in this
speciﬁcation, see Terminology C168.
3.2 Deﬁnitions of Terms Speciﬁc to This Standard:
3.2.1 shrinkage—decrease in thickness that occurs from the
time of installation until the insulation is dry (see 7.2.5).
3.2.2 stabilized cellulose—a cellulosic insulation product
treated to resist, after drying, further settling of no more than
5 %.
4. Materials and Manufacture
4.1 The basic material shall be recycled cellulosic ﬁber
made from selected paper or paperboard stock. Additives are
introduced to affect different performance characteristics, in-
cluding those related to ﬁre performance, processing, and
handling. An adhesive is added to the insulation product to
resist long-term settling of the insulation after installation and
curing.
4.2 The materials are processed into a form suitable for
installation by a pneumatic method.
4.3 The adhesive is added to the product either at the time of
manufacture or at the time of installation by means of a liquid
spray.
1
This speciﬁcation is under the jurisdiction of ASTM Committee C16 on
Thermal Insulation and is the direct responsibility of Subcommittee C16.23 on
Blanket and Loose Fill Insulation.
Current edition approved July 15, 2024. Published July 2024. Originally
approved in 2001. Last previous edition approved in 2016 as C1497 – 16. DOI:
10.1520/C1497-24.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at www.astm.org/contact. 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
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.
1

5. Physical and Chemical Properties
5.1 Density—The density of conditioned stabilized insula-
tion in lb/ft
3
(kg/m
3
) shall be determined in accordance with
Section 7.
5.2 Corrosiveness—The loose-ﬁll insulation material shall
be tested for corrosiveness in accordance with Section 8. The
composition of the insulation material shall be such that after
testing, no perforation of the 0.003 in. (0.076 mm) metal
specimens shall be evident when the specimens are observed
over a 40-W appliance light bulb. Notches extending into the
coupon 0.1 in. (3 mm) or less from any edge shall be ignored.
5.3 Critical Radiant Flux—When tested in accordance with
Section 9, the critical radiant ﬂux shall be equal to or greater
than 0.11 Btu/ft
2
·s (0.12 W/cm
2
). All values shall be reported to
two signiﬁcant digits.
5.4 Fungi Resistance—The loose-ﬁll insulation material
shall be tested and pass fungi resistance as speciﬁed in Section
10. All three test specimens shall exhibit growth less than or
equal to the comparative material in order to pass.
5.5 Water Vapor Sorption—Moisture gain in the insulation
shall be no more than 15 % by weight when tested in
accordance with Section 11.
5.6 Odor Emission—Any sample producing a detectable
odor that is classiﬁed as objectionable and strong or strong by
more than two panel members shall be considered to have
failed the test when tested in accordance with Section 12.
5.7 Smoldering Combustion—When tested in accordance
with the smoldering combustion test method in Section 13, the
insulation shall show no evidence of ﬂaming and a weight loss
of no greater than 15 % of the specimen weight.
5.8 Thermal Resistance—The standard thermal resistance
values recommended for application shall be expressed in
°F·h·ft
2
/Btu (K·m
2
/W). The R-value shall be measured in
accordance with Section 14. During random sampling, an
average measured R for four specimens that is 95 % of the
labeled value shall be acceptable provided no measurement is
less than 90 % of the labeled value.
3
5.9 Permanency of Flame Retardant Treatment—It is im-
portant to ensure that the ﬁre test response characteristics of the
cellulosic ﬁber insulation, expressed as the critical radiant ﬂux
in accordance with 5.3 or as the smoldering performance in
accordance with 5.7, not be degraded over time. The rationale
for the concern is that the additives used for improving the ﬁre
test response characteristics of cellulosic ﬁber insulation are
physically added to the cellulose and are not chemically bound
to the cellulose. Studies have been made in the past indicating
that cellulose insulation treated with boric acid (1),
4
borates
(2), and ammonium sulfate (3) retains its ﬁre test response
characteristics for years, based on cellulose insulation that had
been installed for periods of up to 14 years (4,5). No data has
been presented to the committee to update or revise this
information and no permanency test method has been devel-
oped to date.
5.10 Shrinkage—The shrinkage (S
1
) determined in accor-
dance with Section 7.
5.11 Settling—The settling (S
2
) determined in accordance
with Section 7shall be no greater than 5 %.
6. Workmanship, Finish, and Appearance
6.1 The product shall be free of extraneous foreign materials
such as metals and glass that will adversely affect the perfor-
mance in service.
7. Shrinkage, Settling, and Density
7.1 Density:
7.1.1 Scope—This test method provides a basis for calcu-
lating the product coverage values and for conducting physical
property tests requiring the use of density for specimen
preparation. The shrinkage and settling results provide infor-
mation for installation.
7.1.2 Signiﬁcance and Use—The density is the weight per
unit volume expected after long-term attic use. All testing of
this product shall be done using specimens having the density
determined by the drop box method described in this section.
7.1.3 Apparatus:
7.1.3.1 Insulation Specimen Container—The drop box ap-
paratus shall consist of an open-top box with sides and bottom
made from
3
⁄
4
-in. (19 mm) thick plywood. The interior of the
box shall be treated with a water sealer. The interior dimen-
sions of the box shall be 22 by 36 by 5-in. (deep) (559 by 914
by 127 mm) for insulation with R < 22 ft
2
·h·°F/Btu (3.87
K·m
2
/W), 22 by 36 by 7
1
⁄
2
-in. (deep) (559 by 914 by 191 mm)
for insulation with 22 < R < 32 ft
2
·h·°F/Btu and 22 by 36 by
10-in. (deep) (550 by 914 by 254 mm) for insulation with R >
32 ft
2
·h·°F/Btu (5.64 K·m
2
/W). A 1.0-in. (25 mm) steel “eye”
shall be attached to each corner to facilitate lifting the box with
a cable or rope harness and pulley system. All box dimensions
shall be within 63 % of the values speciﬁed above.
7.1.3.2 Spacer—A 6.0-in. (150 mm) thick spacer shall be
fabricated for positioning the box above a concrete ﬂoor. The
spacer shall be ﬁtted with a handle or heavy cord to assist
moving it from below the suspended box. Use a quick release
device to drop the suspended box.
7.1.3.3 Balance—A balance having sufficient capacity to
weigh a specimen container with freshly installed insulation to
within 0.01 lb (5g).
7.1.3.4 Probe and Ruler—A 0.125 60.008 in. (3.2 60.2
mm) diameter metal rod that is pointed on one end shall be
used as a pin gauge. A steel rule with 0.05 in. (1.0 mm) or ﬁner
readability shall be used to determine insulation thicknesses.
The device pictured in Figure 1 of Test Methods C167 is
suitable for use.
7.2 Procedure:
7.2.1 A partially enclosed area is required for specimen
preparation. The enclosure must protect the blowing operation
from wind or strong air currents. Ensure that the geometry of
the room does not inﬂuence the stream of insulation from the
3
The ranges of thermal resistance, R, listed in this section are allowed by Federal
Trade Commission 16 CFR Part 460 Trade Regulation Rule: Labeling and
Advertising of Home Insulation.
4
The boldface numbers in parentheses refer to a list of references at the end of
this standard.
C1497 − 24
2

hose. It is recommended that the area of the enclosure be at

least 2.5 times the area of the test specimen container.

7.2.2 The weight of the empty box, M

, shall be determined

to within 0.06 lb (25 g).

7.2.3 The product to be tested shall be installed in the box

using equipment and installation instructions recommended by

the manufacturer. Excess insulation shall be screed from the

top of the test specimen to provide a level surface that

coincides with the top edges of the box. The weight of the box

and newly installed insulation, M

, shall be determined to

within 0.06 lb (25 g) and recorded.

7.2.4 The average depth of the insulation shall be deter-

mined to within 0.05-in. (1 mm) using a metal probe. Five

individual depth measurements shall be averaged to obtain the

depth that is representative of the newly installed insulation.

Individual measurements shall be taken at the center of the box

and in each quadrant of the box.

7.2.5 The insulation shall be allowed to dry in a conditioned

space maintained at 75 65°F and 50 65 % RH until a change

in net weight of the specimen is less than 0.06 lb (25 g) in two

consecutive weight determinations with 24 h between determi-

nations. The weight of the box with the conditioned (dry)

insulation, M

, shall be recorded. Since it is possible that

moving of boxes containing insulation will disturb the

insulation, a suitable solution involves preparing an additional

10-in. deep box of insulation installed in the same manner as

the test specimens and using it to track the drying of the test

specimens.

7.2.6 The thickness of the conditioned insulation shall be

measured by the same method used to measure the initial

thickness.

7.2.7 The box containing the conditioned insulation shall be

dropped ﬁve times onto a solid concrete ﬂoor from a height of

6 –0/+1/2 in. (150 –0/+13 mm). The average thickness of the

insulation shall be measured after ﬁve drops using the method

used to measure the initial thickness.

7.2.8 The insulation shall be removed from the box and

weighed to within 0.01 lb (5 g). This is weight M

7.3 Calculations—All of the following are inside dimen-

sions:

L = the length of the box, in. (mm)

W = the width of the box, in. (mm)

= the weight of the empty box in lbs (g)

= the weight of the box and insulation at installation in

lbs (g)

= the weight of the box and insulation after conditioning

in lbs (g)

= the weight of the conditioned insulation in lbs (g)

= the initial thickness of the insulation, in. (mm)

= the thickness of the insulation after conditioning , in.

(mm)

= the thickness of the insulation after ﬁve drops, in. (mm)

Weight of water added during installation = M

– M

lbs (g)

percent water added during installation (dry basis) = (M

–

)×100/M

V = volume of insulation before dropping = L×W×T

/1728

or (L×W×T

/1×10

))

D = density of dry “stabilized” product = M

/V lb/ft

/1000V (kg/m

))

= % shrinkage = (T

– T

)×100/T

= % settling = (T

– T

)×100/T

7.4 Report:

7.4.1 Test material identiﬁcation,

7.4.2 The dimensions of the drop box,

7.4.3 The thickness tested,

7.4.4 The percentage water added (dry basis),

7.4.5 The density of the dry-stabilized product,

7.4.6 The percent shrinkage,

7.4.7 The percent settling.

7.5 Precision and Bias:

7.5.1 The precision of this test method is based on an

interlaboratory study (ILS) of Speciﬁcation C1497 conducted

in 2009. Two laboratories measured the density, settling, and

shrinkage of two different materials, in three size variations.

Every “test result” represents an individual determination.

Each laboratory was asked to submit three replicate test results,

from a single operator, for each analysis and material type.

Except for the limited number of reporting laboratories and

materials tested, Practice E691 was followed for the design and

analysis of the data.

7.5.1.1 Repeatability Limit (r)—Two test results obtained

within one laboratory shall be judged not equivalent if they

differ by more than the “r” value for that material; “r” is the

interval representing the critical difference between two test

Supporting data have been ﬁled at ASTM International Headquarters and may

be obtained by requesting Research Report RR:C16-1039.

TABLE 1 Density (lbs per f

)

Flame Retardant Additives Average

Repeatability Standard Deviation Repeatability Limit

x¯ Sr r

5 inch box

Boric acid 1.966 0.088 0.246

Boric acid and ammonium sulfate 1.678 0.054 0.152

7.5 inch box

Boric acid 2.022 0.063 0.175

Boric acid and ammonium sulfate 1.792 0.038 0.107

10 inch box

Boric acid 2.031 0.155 0.434

Boric acid and ammonium sulfate 1.848 0.012 0.034

The average of the laboratories’ calculated averages.

C1497 − 24

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标签： #纤维素纤维 #稳定隔热材料

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ASTM C1497-2024 Standard Specification for Cellulosic Fiber Stabilized Thermal Insulation 纤维素纤维稳定隔热材料标准规范

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