ASTM C1029 - 20

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Designation: C1029 −20

Standard Speciﬁcation for

Spray-Applied Rigid Cellular Polyurethane Thermal

Insulation

This standard is issued under the ﬁxed designation C1029; 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.

This standard has been approved for use by agencies of the U.S. Department of Defense.

1. Scope

1.1 This speciﬁcation covers the types and physical proper-

ties of spray applied rigid cellular polyurethane intended for

use as thermal insulation. The operating temperatures of the

surfaces to which the insulation is applied shall not be lower

than −22°F (−30°C) or greater than +225°F (+107°C). For

speciﬁc applications, the actual temperature limits shall be as

agreed upon between the manufacturer and the purchaser.

1.2 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.

1.3 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.

1.4 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:

C165 Test Method for Measuring Compressive Properties of

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

C518 Test Method for Steady-State Thermal Transmission

Properties by Means of the Heat Flow Meter Apparatus

C1303/C1303M Test Method for Predicting Long-Term

Thermal Resistance of Closed-Cell Foam Insulation

C1363 Test Method for Thermal Performance of Building

Materials and Envelope Assemblies by Means of a Hot

Box Apparatus

D883 Terminology Relating to Plastics

D1621 Test Method for Compressive Properties of Rigid

Cellular Plastics

D1622/D1622M Test Method for Apparent Density of Rigid

Cellular Plastics

D1623 Test Method for Tensile and Tensile Adhesion Prop-

erties of Rigid Cellular Plastics

D2126 Test Method for Response of Rigid Cellular Plastics

to Thermal and Humid Aging

D2842 Test Method for Water Absorption of Rigid Cellular

Plastics

D6226 Test Method for Open Cell Content of Rigid Cellular

Plastics

E84 Test Method for Surface Burning Characteristics of

Building Materials

E96/E96M Test Methods for Water Vapor Transmission of

Materials

3. Terminology

3.1 Deﬁnitions:For deﬁnitions of terms used in this

speciﬁcation, refer to Terminologies C168 and D883.

4. Classiﬁcation

4.1 Spray-applied rigid-cellular polyurethane thermal insu-

lation covered by this speciﬁcation is classiﬁed into four types

as follows:

4.1.1 Type I—Compressive strength 15 psi (104 kPa) mini-

mum.

4.1.2 Type II—Compressive strength 25 psi (173 kPa) mini-

mum.

4.1.3 Type III—Compressive strength 40 psi (276 kPa)

minimum.

This speciﬁcation is under the jurisdiction of ASTM Committee C16 on

Thermal Insulation and is the direct responsibility of Subcommittee C16.22 on

Organic and Nonhomogeneous Inorganic Thermal Insulations.

Current edition approved Dec. 1, 2020. Published January 2021. Originally

approved in 1985. Last previous edition approved in 2015 as C1029 – 15. DOI:

10.1520/C1029-20.

For referenced ASTM standards, visit the ASTM website, www.astm.org, or

contact ASTM 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.

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.

4.1.4 Type IV—Compressive strength 60 psi (414 kPa)

minimum.

5. Ordering Information

5.1 Orders for materials purchased under this speciﬁcation

shall include the following:

5.1.1 ASTM designation, year of issue, and title.

5.1.2 Type (see 4.1).

5.1.3 Rvalue or thickness required (see 10.1).

5.1.4 Sampling, if different (see Section 8).

5.1.5 If a certiﬁcate of compliance is required (see 13.1).

5.1.6 If packaging is other than speciﬁed (see 14.1).

5.1.7 If marking is other than speciﬁed (see 14.4).

6. Materials and Manufacture

6.1 Spray-applied rigid-cellular polyurethane thermal insu-

lation is produced by the catalyzed chemical reaction of

polyisocyanates with polyhydroxyl compounds, with the addi-

tion of other compounds such as stabilizers and blowing

agents.

6.2 The materials shall be capable of being mixed and

applied using commercial polyurethane spray equipment.

NOTE 1—The thermal insulation shall be formed directly on the surface

to be sprayed, unless agreed upon by the purchaser and the manufacturer.

7. Physical Requirements

7.1 Polyurethane thermal insulation shall have the limiting

property values as shown in Table 1.

7.2 Other physical properties shall be required, as agreed

upon by the purchaser and the manufacturer

NOTE 2—Density is not a requirement of this speciﬁcation, but if agreed

upon by the purchaser and the manufacturer shall be determined in

accordance with Test Method D1622/D1622M for point-of-manufacture

quality control.

8. Sampling

8.1 Lot—For purposes of sampling, the lot shall consist of

all the polyurethane liquid components purchased at one time.

8.2 Unit Sample—The unit sample shall consist of approxi-

mately 50 lb (23 kg) of each of the two liquid components as

required to prepare the foam test specimens speciﬁed in

Section 9. Samples may be drawn from representative bulk

storage or from one or more shipping containers.

8.3 Sampling for qualiﬁcation tests, if required, shall be in

accordance with statistically sound practice. Qualiﬁcation tests

will be conducted on the physical properties in Table 1.

8.4 Sampling for inspection tests, if required, shall be for

properties agreed upon between the manufacturer and the

purchaser.

9. Test Specimen Preparation

9.1 Finished polyurethane foam insulation test panels shall

be made by spray application consistent with the manufactur-

er’s recommendations including: temperatures of the liquid

components, ambient temperature, temperature and type of

substrate, type and operation of spray equipment, and thickness

of foam per pass. Unless otherwise speciﬁed and reported, the

ambient and substrate temperature shall be 75 65°F (24 6

3°C). The relative humidity must not exceed 80%. The test

panels shall be of a sufficient quantity and size to satisfy test

requirements.

NOTE 3—Speciﬁc panel sizes and thicknesses shall be based on the

requirements of the individual tests.

9.2 The test panels shall be allowed to cure for at least 72 h

at 73 62°F (23 61°C) and 50 65% relative humidity prior

to cutting or testing for physical properties.

9.3 Core specimens, when required, shall be obtained by

removing both the external skin and the boundary skin found at

the substrate/foam interface. A trim cut on each face to a depth

⁄

in. (3 to 6 mm) is generally sufficient. Core

specimens may contain one or more internal skins at spray pass

boundaries.

9.4 Sample Preparation for Test Method D2126—For Type

I, II, III, and IV products the sample foams are spray applied to

2 by 2 ft (610 by 610 mm) exterior CDX Grade

⁄

in. (19 mm)

plywood (unﬁnished on both sides). The preparation of these

samples will begin with a control lift of foam with a thickness

of approximately

⁄

in. (13 mm) 615 %. One but no more than

two additional lifts are then applied to develop a total foam

thickness between 1.5 to 2.0 in. (38 to 50 mm). The ﬁrst pass

shall be a control lift approximately

⁄

in. (13 mm) thickness

(615 %). A 12 by 12 in. (305 by 305 mm) sample is cut from

the center of the plywood/foam as the test specimen. The

specimen and plywood will be cut in such a manner that it will

have at least one knit line. The cut foam height (including the

control lift) will be 1.5 in. (38 mm) from the plywood. The test

TABLE 1 Physical Properties

Property Requirements

Type I Type II Type III Type IV

Thermal resistance of 1.0 in. (25 mm) thickness, min, °F·ft

·h/Btu (K·m

/W)

at mean temperature 75°F (24°C)

6.2 6.2 6.2 6.2

Compressive strength, at yield or 10 % deformation, whichever comes ﬁrst,

min, psi (kPa)

15 (104) 25 (173) 40 (276) 60 (414)

Water vapor permeability, max, perm-inches (ng/Pa·s·m) 3.0 (4.4) 3.0 (4.4) 3.0 (4.4) 3.0 (4.4)

Water absorption, max, volume % 5 5 5 5

Tensile strength, min, psi (kPa) 20 (138) 32 (221) 42 (290) 56 (386)

Response to thermal and humid aging, max, linear change % 12 9 6 5

Closed cell content, min, % 90 90 90 90

Surface burning characteristics, report value ... ... ... ...

C1029 − 20

specimen will be cut from the ﬁeld sample so as to have

smooth edges free of cracks. All faces will be smooth and shall

be dust free. Two specimens shall be used for test exposure per

test. In addition, 2 samples of the plywood will also be cut 12

by 12 in. (305 by 305-mm) as a control. Control samples of

bare plywood shall be aged to the same temperature and

humidity conditions as the samples made from foam sprayed to

plywood. The change in thickness of the control panel shall be

subtracted from the change in thickness of the sample to obtain

the percentage of linear change in thickness of the foam per

Test Method D2126.

10. Test Methods

10.1 Determine thermal resistance in accordance with Test

Method C177, Test Method C1363, or Test Method C518 at a

mean temperature of 75 62°F (24 61°C) and 40°F (22°C)

minimum temperature gradient on 1 6

⁄

-in. (25 63-mm)

thick core specimens. These core specimens shall be condi-

tioned at 73 62°F (23 61°C) and 50 65% relative humidity

for 180 65 days from time of manufacture (see X1.2)or90+

2 days at 140 °F (60 °C) dry heat+2°F(1°C). Where other

thermal resistance testing requirements are mandated by gov-

ernmental energy conservation rules and regulations, those

procedures shall be required.

NOTE 4—Although Test Method C1303/C1303M can be used to predict

long term thermal resistance value, predicted values for current materials

covered in Speciﬁcation C1029 are not available. The industry has started

a test program to address this need.

10.2 Determine compressive strength in accordance with

Method C165, Procedure A, at a crosshead speed of 0.1 in./min

per inch of thickness, at yield or 10% deformation, whichever

comes ﬁrst, or in accordance with Test Method D1621,

Procedure A. The loading force shall be applied parallel to the

normal thickness dimension of the insulation panel.

10.3 Determine water vapor permeability in accordance

with Test Methods E96/E96M, Desiccant Method, at 73 62°F

(23 61°C).

10.4 Determine water absorption in accordance with Test

Method D2842.

10.5 Determine tensile strength in accordance with Test

Method D1623.

10.6 Determine response to thermal and humid aging in

accordance with Test Method D2126. Expose the specimens to

158 64°F(7062 °C) and 97 63% relative humidity for 168

62 h. Determine the dimensions of the three principal axes to

the nearest 0.1%. Measure the percent change in the length,

width, and thickness directions of the sample at 24 6

⁄

h and

168 62h. Make three measurements of length and width at the

center point and two quarter points at the edge of the top

surface, and ﬁve measurements of thickness at the center and

four quarter points of the top surface. If specimens distort,

report them as distorting under the speciﬁed aging conditions.

The maximum of the length, width, and thickness shall be

compared to the limits in Table 1.

10.7 Determine the closed cell content in accordance with

Test Method D6226.

10.8 Determine the surface burning characteristics in accor-

dance with Test Method E84 at end use thicknesses and report

the results. See Section 1 of Test Method E84 for information

regarding the applicability of this test method for testing rigid

cellular plastics.

11. Inspection

11.1 Inspection of the material shall be as agreed upon

between the manufacturer and the purchaser as part of the

purchase agreement.

12. Rejection and Rehearing

12.1 Material that fails to conform to the requirements of

the speciﬁcation shall be rejected. Rejection shall be reported

to the manufacturer promptly and in writing. The manufacturer

shall have the right in case of disagreement of the results to

make a claim for a rehearing.

13. Certiﬁcation

13.1 When speciﬁed in the purchase order or contract, a

manufacturer’s certiﬁcation shall be furnished to the purchaser

that the material was manufactured, sampled, tested, and

inspected in accordance with this speciﬁcation and has been

found to meet the requirements. When speciﬁed in the pur-

chase order or contract, a report of the test results shall be

furnished.

13.2 Upon the request of the purchaser in the contract or

order, the certiﬁcation of an independent third party indicating

conformance to the requirements of this speciﬁcation may be

considered.

14. Packaging and Package Marking

14.1 Unless otherwise speciﬁed or agreed upon between the

manufacturer and the purchaser, the liquid components shall be

packaged in the manufacturer’s standard commercial contain-

ers.

14.2 Each container shall be blanketed with dry air or

nitrogen and tightly sealed.

14.3 Each container shall be clearly identiﬁed as either

polyisocyanate (“A” component) or resin (“B” component).

14.4 Each container shall also be marked with the following

information:

14.4.1 Name of the manufacturer.

14.4.2 Manufacturer’s product designation.

14.4.3 Manufacturer’s lot number or the date of production,

or both.

14.4.4 Net weight of the contents and gross weight of the

container and contents.

14.4.5 Instructions for safe handling and recommended

storage temperatures.

14.4.6 Mixing instructions.

14.4.7 Listing agency label if applicable.

15. Keywords

15.1 air seal; monolithic; SPF; thermal insulation

C1029 − 20

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摘要：

ASTM C1029 - 20 是美国材料与试验协会发布的最新版本标准，专门针对闭孔喷涂聚氨酯泡沫塑料的热绝缘性能进行规范。该标准详细规定了喷涂泡沫材料在建筑和工业应用中的密度、抗压强度、导热系数、吸水率以及尺寸稳定性等关键性能指标的测试方法与合格要求。通过遵循 ASTM C1029 - 20，工程师、建筑师和施工单位能够确保所选用的喷涂聚氨酯泡沫在保温隔热、防潮密封和结构支撑方面达到一致且可靠的质量水平，从而有效提升建筑节能效率、延长使用寿命并降低长期维护成本。该标准适用于新建工程及既有建筑的

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