1、Designation: C991 081C991 15Standard Specification forFlexible Fibrous Glass Insulation for Metal Buildings1This standard is issued under the fixed designation C991; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last
2、revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1 NOTE6.1.2 was editorially updated in June 2008.1. Scope1.1 This specification covers the classification, composition, and physical pr
3、operties of flexible fibrous glass insulation for usein metal building roofs and walls.1.2 The basic insulation blanket is designed to be post-processed by a laminating process that applies an adhesive bondedfacing.1.3 The thermal values measured in accordance with this specification for both pre-pr
4、ocessed and post-processed insulation arefor the insulation only and do not include the effects of air-film surface resistance, changes in mean temperature, or compressionof insulation at the framing members of the building, through metal conductance of fasteners and other parallel heat-transfer pat
5、hsdue to design or installation techniques.1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.5 This standard does not purport to ad
6、dress all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatoryrequirements prior to use.2. Referenced Documents2.1 ASTM Standards:2C167 Test Met
7、hods for Thickness and Density of Blanket or Batt Thermal InsulationsC168 Terminology Relating to Thermal InsulationC177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of theGuarded-Hot-Plate ApparatusC390 Practice for Sampling and Acceptance of Ther
8、mal Insulation LotsC518 Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter ApparatusC653 Guide for Determination of the Thermal Resistance of Low-Density Blanket-Type Mineral Fiber InsulationC665 Specification for Mineral-Fiber Blanket Thermal Insulation for
9、 Light Frame Construction and Manufactured HousingC755 Practice for Selection of Water Vapor Retarders for Thermal InsulationC1104/C1104M Test Method for Determining the Water Vapor Sorption of Unfaced Mineral Fiber InsulationC1136 Specification for Flexible, Low Permeance Vapor Retarders for Therma
10、l InsulationC1258 Test Method for Elevated Temperature and Humidity Resistance of Vapor Retarders for InsulationC1304 Test Method for Assessing the Odor Emission of Thermal Insulation MaterialsC1338 Test Method for Determining Fungi Resistance of Insulation Materials and FacingsE84 Test Method for S
11、urface Burning Characteristics of Building MaterialsE136 Test Method for Behavior of Materials in a Vertical Tube Furnace at 750C2.2 Other Referenced Document:CAN/ULC-S102 Standard Method of Test for Surface Burning Characteristics of Building Materials and Assemblies31 This specification is under t
12、he jurisdiction ofASTM Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.23 on Blanket and LooseFill Insulation.Current edition approved May 1, 2008April 15, 2015. Published May 2008May 2015. Originally approved in 1983. Last previous edition approved in 200320
13、08 asC991 03.C991 081. DOI: 10.1520/C0991-08E01.10.1520/C0991-15.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM webs
14、ite.3 Available from Underwriters Laboratories (UL), 333 Pfingsten Rd., Northbrook, IL 60062-2096, http:/.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. Becauseit may not be tech
15、nically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO
16、Box C700, West Conshohocken, PA 19428-2959. United States13. Terminology3.1 DefinitionsFor definitions of terms relating to insulation, refer to Terminology C168.4. Classification4.1 The flexible fibrous glass insulation is furnished in two types, as follows:4.1.1 Type IGlass processed from the molt
17、en state into fibrous form, bonded with a thermosetting resin, and formed into ablanket or batt.4.1.2 Type IIType I material supplied with a suitable facing adhered to one surface.NOTE 1Facing properties are not part of this specification. The designer is referred to Practice C755 and Specification
18、C1136 for guidance in selectingwater vapor permeance and other physical property requirements.5. Ordering Information5.1 Type I material shall be ordered by specifying thermal resistance value, length, and width.5.2 Type II material shall be ordered by specifying thermal resistance value, type of fa
19、cing, facing permeance, length, width,number of tabs, and tab width.5.3 Certification, when required, shall be in accordance with Section 11.6. Physical Properties6.1 Type 1 Material:6.1.1 Thermal ResistanceThe thermal resistance of the pre-processed insulation shall be determined in accordance with
20、 Guideunfaced insulation shall meet C653. The average R-value from nine randomly selected specimens, three specimens from each ofthree rolls, shall not be less than 103 % of the Rfollowing-value agreed upon by the purchaser and the supplier. Use Test Methodrequirements:C177 or C518 at 75F (23.9C) wi
21、th a minimum temperature difference of 40F (20C) for determining apparentthermal conductivity. Use the full roll method fromTest Method C167 to determine the average thickness for each roll and evaluateat the lesser of measured or label thickness.6.1.1.1 Thermal ResistanceThe average R-value of nine
22、 tests, one each performed on three randomly selected specimens fromeach of three rolls, shall be not less than 103 % of the R-value agreed upon by the purchaser and the supplier.(1) The average thickness of each roll shall be determined byTest Method C167 and the lesser of measured or labeled thick
23、nesstested.(2) The thermal resistance of the pre-processed (unlaminated) insulation shall be determined in accordance with Guide C653,using either Test Method C177 or C518 at a mean temperature of 75F (23.9C) with a minimum temperature difference of 40F(22C) for determining the apparent thermal cond
24、uctivity.NOTE 2See Guide C653. The thermal resistance is a function of temperature. As an option, the thermal resistance may be determined at additionaltemperatures as agreed upon by the purchaser and the manufacturer.6.1.2 Surface Burning CharacteristicsThe surface burning characteristics shall be
25、determined in accordance withTest MethodE84. For Canada, test in accordance with Test Method CAN/ULC-S102. When the referenced Canadian document in thisspecification is referred to in applicable Canadian building codes, the editions, referenced by those building codes, shall govern.Results shall be
26、no greater than:Flame spread 25Smoke developed 506.1.3 Combustion CharacteristicsThe material shall pass the requirements of Test Method E136.6.1.4 Water Vapor SorptionThe water vapor sorption from exposure to water vapor shall not be greater than 0.2 % by volumewhen determined in accordance with th
27、e procedure set forth in Test Method C1104/C1104M.6.1.5 Fungi ResistanceWhen tested in accordance with the procedure set forth in Test Method C1338, the insulation shallexhibit no growth.6.1.6 CorrosivenessWhen tested in accordance with the procedure in Specification C665, the metal plates in contac
28、t with theinsulation shall show no greater corrosion than that observed on the comparative plates in contact with sterile cotton.6.1.7 Odor EmissionWhen tested in accordance with Test Method C1304, the insulation shall not emit a detectable odorobjectionable to more than two of the five panel member
29、s.6.1.8 Dimensional TolerancesThe average measured length and width shall not differ from the manufacturers standarddimensions, when determined in accordance with Test Methods C167, (Note 3) by more than the following:Length, 0 in. (0 mm)Width, 18 in. (3 mm)NOTE 3Normally, a slight excess in all dim
30、ensions will be permitted. However, the purchaser may elect to specify a maximum tolerance to meetfurther processing requirements.C991 1526.2 Type II Material:6.2.1 Type II shall be faced on one side with a suitable facing and exhibit the following.consist of a Type I blanket laminatedwith a facing.
31、6.2.1.1 The facing shall meet the requirements of Specification C1136 for corrosion resistance, fungi resistance, andnon-leachability (permanence) of flame retardants, as certified by the facing supplier.6.2.2 Thermal ResistanceThe thermal resistance of the post-processed insulation shall be determi
32、ned in accordance withGuide C653. The average R-value from nine randomly selected specimens, three specimens from each of three rolls, shall not beless than 95 % of the R-value agreed upon by the purchaser and the supplier. Use Test Method C177 or C518 at 75F (23.9C)with a minimum temperature differ
33、ence of 40F (20C) for determining apparent thermal conductivity. Use Test Methods C167to determine the average thickness for each roll.6.2.3 Surface Burning CharacteristicsDetermine the surface burning characteristics on the facing side of the compositematerial. in accordance with Test Method E84. F
34、or Canada, test in accordance with CAN/ULC-S102. Results shall be no greaterthan:Flame spread 25Smoke developed 506.2.4 Combustion CharacteristicsThe base insulation material shall pass the requirements of Test Method E136.6.2.5 Water Vapor SorptionThe water vapor sorption of the base material shall
35、 not be greater than 0.2 % by volume whendetermined in accordance with the procedure set forth in Test Method C1104/C1104M.6.2.6 Fungi ResistanceWhen tested in accordance with the procedure set forth in Test Method C1338, the insulation and thefacing shall exhibit no growth.6.2.7 CorrosivenessWhen t
36、he base insulation is tested in accordance with the procedure in Specification C665, the metalplates in contact with the insulation shall show no greater corrosion than that observed on the comparative plates in contact withsterile cotton6.2.8 Odor EmissionWhen tested in accordance with Test Method
37、C1304, the insulation shall not emit a detectable odorobjectionable to more than two of the five panel members.6.2.2 Dimensional TolerancesThe average measured length and width shall not differ from the manufacturers standarddimensions, when determined in accordance with Test Methods faced insulatio
38、n shall meet the following requirements: C167,(Note 3) by more than the following:Length, 0 in. (0 mm)Width, 18 in. (3 mm)6.2.2.1 Thermal ResistanceThe average R-value of nine tests, one each performed on three randomly selected specimens fromeach of three rolls, shall be not less than 95 % of the R
39、-value agreed upon by the purchaser and the supplier.(1) The average thickness of each roll shall be determined by Test Method C167 and the lesser of measured or labeledthickness tested.(2) The thermal resistance of the post- laminated insulation shall be determined in accordance with Guide C653, us
40、ing eitherTest Method C177 or Test Method C518 at 75F (23.9C) with a minimum temperature difference of 40F (22C) for determiningthe apparent thermal conductivity.6.2.2.2 Surface Burning CharacteristicsThe faced insulation shall exhibit a flame spread index not exceeding 25 and a smokedeveloped index
41、 no exceeding 50 when tested on the facing side in accordance with either Test Method E84 or with CAN/ULCS102, depending on the applicable code requirements.6.2.2.3 Fungi ResistanceThe adhesive shall be tested separately per Test Method C1338 by the supplier and shall exhibit nogrowth, as certified
42、by the adhesive supplier.6.2.2.4 IntegrityLaminated insulation shall not exhibit obvious oxidation/corrosion, discoloration or delamination of facing,nor exhibit lack of adhesion of facing to insulation when inspected visually.6.2.2.5 Dimensional TolerancesThe average measured length and width shall
43、 not differ from the manufacturers standarddimensions, when determined in accordance with Test Methods C167, (Note 4) by more than the following:Length, 0 in. (0 mm)Width, 18 in. (3 mm)NOTE 4Normally, a slight excess in all dimensions will be permitted. However, the purchaser may elect to specify a
44、maximum tolerance to meetfurther processing requirements.6.2.10 Humid AgingThe faced material, when tested in accordance with the procedures in Test Method C1258, shall notexhibit (a) corrosion of the facing, (b) delamination of the facing, or (c) lack of adhesion of facing to insulation.7. Workmans
45、hip7.1 Both Type I and Type II material shall exhibit good workmanship and shall not have visible defects that adversely affectits serviceability.C991 1538. Sampling8.1 Quality control records, maintained by the manufacturer, will usually suffice in the relationship between the purchaser andthe manu
46、facturer. If they mutually agree to accept lots on the basis of quality control records, no further sampling is required.8.2 If the above procedure is not acceptable, sampling shall be in conformance with Practice C390.9. Inspection9.1 Inspection of the material shall be agreed upon between the purc
47、haser and the supplier as part of the purchase contract.10. Rejection and Rehearing10.1 Material that fails to conform to the requirements of this specification shall constitute cause for rejection. Rejection shallbe reported to the producer or supplier promptly and in writing.10.2 The producer or s
48、upplier shall have the option to reinspect rejected shipments and resubmit the entire lot for inspectionand resampling after the removal and replacement of nonconforming portions.11. Certification11.1 When specified in the purchase order or contract, a producers, suppliers or independent third party
49、s certification shallbe furnished to the purchaser indicating that the material was manufactured, sampled, tested, and inspected in accordance with thisspecification and has been found to meet the requirements. When specified in the purchase order or contract, a report of the testresults shall be furnished.12. Health and Safety Hazards12.1 The manufacturer shall provide the users with information regarding any hazards and recommended protective measuresto be employed for safe installation and
