1、Designation:D546900 (Reapproved 2005)D5469/D5469M12 Standard Guide for Application of New Spray Applied Polyurethane Foam and Coated Roong Systems 1 ThisstandardisissuedunderthexeddesignationD5469;D5469/D5469M;thenumberimmediatelyfollowingthedesignationindicates the year of original adoption or, in
2、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 guide covers the application of new roong systems consisting of spray applie
3、d polyurethane foam insulation, elastomeric protective coatings, and optional mineral granules. This guide does not apply to retrot or remedial applications. 1.2 Design criteria associated with the installation of spray in place polyurethane foam are beyond the scope of this specication. 1.3 The val
4、ues stated in either SI units or inch-pound units are to be regarded separately as the standard. The values given in parentheses are for information only. stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the tw
5、o systems may result in non-conformance with the standard. 1.4 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 applicabi
6、lity of regulatory limitations prior to use. 2. Referenced Documents 2.1 ASTM Standards: 2 C1029Specication for Spray-Applied Rigid Cellular Polyurethane Thermal Insulation D451Test Method for Sieve Analysis of Granular Mineral Surfacing For Asphalt Roong Products D1079Terminology Relating to Roong
7、and Waterproong D1621Test Method for Compressive Properties of Rigid Cellular Plastics D1622Test Method for Apparent Density of Rigid Cellular Plastics D2856Test Method for Open-Cell Content of Rigid Cellular Plastics by the Air Pycnometer (Withdrawn 2006) 3 D4442Test Methods for Direct Moisture Con
8、tent Measurement of Wood and Wood-Base Materials D7119Guide for Sampling Spray Polyurethane Foam and Coating in Roong 2.2 Other Standard: SSPC SP-6Steel Structures Painting Council 3 2.3 Spray Polyurethane Foam Alliance Documents: 4 AY-102Guide for Selection of Protective Coatings Over Spray Polyure
9、thane Foam Roong Systems AY-104Spray Polyurethane Foam Roong Systems for New and Remedial Roong AY-118Moisture Vapor Transmission NRCA Roong and Waterproong Manual,Spray Polyurethane Foam-Based Roong Manual NRCA/SPFA Quality Control Guidelines for the Application of Spray Polyurethane Foam Roong NRC
10、A/SPFAManual for Inspection and Maintenance of Spray Polyurethane Foam-Based Roof Systems,AGuide for Building Owners 1 This guide is under the jurisdiction of ASTM Committee D08 on Roong and Waterproong and is the direct responsibility of Subcommittee D08.06 on Spray Polyurethane Foam Roof Systems.
11、Current edition approved May 1, 2005June 1, 2012. Published May 2005June 2012. Originally approved in 1993. Last previous edition approved in 20002005 as D546900.D546900 (2005). DOI: 10.1520/D5469-00R05.10.1520/D5469_D5469M-12. 2 ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactA
12、STMCustomerServiceatserviceastm.org.ForAnnualBookofASTMStandards volume information, refer to the standards Document Summary page on the ASTM website. 3 Available from Society for Protective Coatings (SSPC), 40 24th St., 6th Floor, Pittsburgh, PA 15222-4656. 4 Available from Spray Polyurethane Foam
13、Alliance, 1300 Wilson Boulevard, Suite 800, Arlington, VA 22209. This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because it may not be technically possible to adequately depict all
14、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. Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-29
15、59. United States 12.4 Other Documents: Underwriters Laboratories,Roong Materials and Systems Directory 5 Factory Mutual Research Corporation,Loss Prevention Data Sheets 128 6 Alliance for the Polyurethane Industry AX119Guide for the Safe Handling and Use of Polyurethane and Polyisocyanurate Foam Sy
16、stems 4 NOTE1Details:Numerousdetailsarefoundinthereferenceddocuments,infoamandcoatingmanufacturersliterature,andfromothersources.These details are to be considered general in nature. They should not be used without modication to allow for movement between the building, roong, roof top equipment, and
17、 roof drainage systems. 3. Terminology 3.1 DenitionsDenitions are in accordance with Terminology D1079. 5 Available from Underwriters Laboratories (UL), Corporate Progress, 333 Pngsten Rd., Northbrook, IL 60062. 6 Available from Factory Mutual Research Corporation, 1151 Boston-Providence Tpke., Norw
18、ood, MA 02062. D5469/D5469M12 23.2 Denitions of Terms Specic to This Standard: 3.2.1 Figs. 1-6 show the various types of polyurethane foam surfaces. 3.2.2 coarseorangepeelsurfaceasurfaceofsprayappliedpolyurethanefoamthatisslightlyrough,havingirregularitiesthat form obtuse angles with the plane of th
19、e surface. 3.2.3 core samplescylindrical sections of approximately 50 to 75 mm (22 to 3 in.)in. diameter. They shall be cut using a round metal template or coring tool, and they shall extend from surface down to substrate. 3.2.4 lifta single application of spray applied polyurethane foam. 3.2.5 ligh
20、tweightorinsulatingconcretellconcretemadewithorwithoutaggregateadditionstoportlandcement,water,and air to form a hardened material which, when oven dried, will have a unit weight of 800 kg/m 3 (5050 lb/ft 3 ) or less. 3.2.6 orange peel surfacea surface of spray applied polyurethane foam that is rela
21、tively smooth, but has a slightly rippled or dimpled appearance. 3.2.7 popcorn surfacea surface of spray applied polyurethane foam that is extremely rough, having irregularities that form angles which are perpendicular to the plane of the surface. 3.2.8 verge of popcorn surfacea surface of spray app
22、lied polyurethane foam that is moderately rough, but does not exhibit sharp angles perpendicular to the plane of the surface. 3.2.9 slit samplescrescent-shaped samples approximately 25 mm (1 in.)1 in. long and 12.5 mm ( 1 2 in.)in. in depth. They are used to check coating surface quality and coating
23、 adhesion and thickness. 3.2.10 smooth surfacea surface of spray applied polyurethane foam that is relatively smooth. 3.2.11 tree bark surfacea surface of spray applied polyurethane foam that is extremely rough and irregular, having undercuts (upper surface of foam overhangs a lower surface) and usu
24、ally accompanied by pinholes. 4. Signicance and Use 4.1 This guide outlines general procedures and precautions necessary for correct and safe application of spray applied polyurethane foam roong systems. 4.2 Thisguideisnotall-inclusive;thisguideisintendedonlytosupplementdetailedinstructionsfrommanuf
25、acturersandsafety requirements established by law. 4.3 RefertoPolyurethaneFoamContractorsAllianceAY-104andNRCASprayPolyurethaneFoam-BasedManualforindustry guidelines. 5. Substrate Requirements 5.1 General Requirements: 5.1.1 Application shall conform to codes having jurisdiction. 5.1.2 All substrate
26、s shall be clean and free of moisture, dust, oil, grease, and release agents or other contaminants. FIG. 1 Polyurethane Foam TextureSmooth D5469/D5469M12 35.1.3 If a vapor retarder is specied, it should be installed in accordance with instructions of the vapor retarder manufacturer and be compatible
27、 with the spray applied polyurethane foam and substrate being covered. Refer to SPI/PFCD documentAY-118. 5.1.4 If a primer is specied or required, it shall be installed to a clean surface in accordance with the primer manufacturers instructions. The primer must be suitable for the substrate, be able
28、 to meet service temperature requirements, be compatible with the spray applied polyurethane foam, and acceptable to the foam manufacturer. FIG. 2 Polyurethane Foam TextureOrange Peel FIG. 3 Polyurethane Foam TextureCoarse Orange Peel D5469/D5469M12 45.2 Metal: 5.2.1 Metal decks shall conform to req
29、uirements of the Steel Deck Institute, 7 American Iron and Steel Institute (AISI), 8 American Society of Civil Engineers (ASCE), 9 7-887-10 and Factory Mutual Research Corporation (FMRC). 6 5.2.2 Surface Preparation: 5.2.2.1 Ferrous Metal Sandblast iron and steel surfaces which are not primed, shop
30、painted, or otherwise protected in accordance with SSPC SP-6. Remove loose rust and unsound primer from shop-primed iron and steel surfaces. The sandblasted area shall be primed the same day. 5.2.2.2 Non-Ferrous MetalClean and prime all surfaces as recommended by primer and foam manufacturer. 5.2.2.
31、3 Flutedmetaldecksshallhaveuteslled,covered,ortapedwithmaterialsandproceduresapprovedbythemanufacturer of the polyurethane foam, prior to spray applied polyurethane foam application. 7 Available from Steel Deck Institute (SDI), PO Box 25, Fox River Grove, IL 60021-0025. 8 Available from American Iro
32、n and Steel Institute (AISI), 1140 Connecticut Ave., Suite 705, Washington, DC 20036. 9 Available from American Society of Civil Engineers (ASCE), 1801 Alexander Bell Dr., Reston, VA 20191. FIG. 4 Polyurethane Foam TextureRippling Verge of Popcorn FIG. 5 Polyurethane Foam TexturePopcorn D5469/D5469M
33、12 55.2.3 Lightweight corrugated roofs, which are secured to meet industry standards, shall meet the surface requirements in 5.2.1 and 5.2.2. 5.3 Concrete: 5.3.1 All joints and cracks that exceed 6 mm ( 1 4 in.)in. shall be lled, covered, or taped with materials and procedures approved by the manufa
34、cturer of the polyurethane foam, prior to application of spray applied polyurethane foam. 5.3.2 Primer, if required, shall be as recommended by the primer or polyurethane foam manufacturer. 5.3.3 Sprayed polyurethane foam is not recommended directly over lightweight nonstructural concretes. 5.4 Wood
35、: 5.4.1 Wood shall contain no more than 18% moisture, as measured in accordance with Test Methods D4442. 5.4.2 Wood surfaces shall be primed with exterior grade primer as recommended by the primer and polyurethane foam manufacturers. 5.4.3 Wood joints in excess of 6 mm ( 1 4 in.)in. shall be taped o
36、r lled with materials and procedures approved by the manufacturer of the polyurethane foam. 5.4.4 Wood plank must be overlaid with a material, approved by the polyurethane foam manufacturer and secured by methods proven to meet the wind resistance requirements of FMRC, Underwriters Laboratory (UL),
37、and local building codes. 5.5 Gypsum Board: 5.5.1 Boards shall be rmly butted together and mechanically fastened. Joints exceeding 6 mm ( 1 4 in.)in. shall be lled or taped with materials and procedures approved by the manufacturer of the polyurethane foam. 5.5.2 Wet gypsum is not acceptable (see 9.
38、10). 5.5.3 Cleaning by power brooming is not permitted. 6. Slope 6.1 The nished roong system shall be sloped a minimum of 6 mm/m ( 1 4 in./ft)in./ft to minimize ponding. 7. Equipment 7.1 The spray applied polyurethane foam shall be metered and mixed through equipment capable of providing a ratio of
39、equal parts of A (isocyanate) component and B (polyol) component, by volume to within an accuracy of62%. 7.2 Spray applied polyurethane foam ratio control shall be monitored by equipment pressure gages, which indicate constant pressure, and by uniform color of the spray applied polyurethane foam. 7.
40、3 Spray applied polyurethane foam equipment shall provide temperature control of the A component and B component to within an accuracy of 2.8C (65F).65F. 7.4 Spray equipment used to apply coating shall be in accordance with the coating manufacturers recommendations. FIG. 6 Polyurethane Foam TextureT
41、ree Bark D5469/D5469M12 68. Safety Requirements 8.1 All handling, storage, applications, and end use safety precautions shall be as outlined by the material manufacturers and SPI Polyurethane Division Technical Bulletin AX119. 8.2 Refer to appropriate Material Safety Data Sheets (MSDS) for additiona
42、l safety information. 8.3 Conform to local codes and ordinances. 9. Polyurethane Foam Material andApplication Requirements 9.1 The spray applied polyurethane foam shall meet the physical requirements of Specication C1029 Type III. 9.2 The spray applied polyurethane foam lifts must be applied in a th
43、ickness of 12.5 mm ( 1 2 in.)in. or greater. The foam manufacturer must be consulted if the foam is to be applied in lifts greater than 37 mm (11 1 2 in.).in. 9.3 Thetotalsprayappliedpolyurethanefoamthicknessshallbeaminimumofonein.(ormoreifspecied).Thetotalthickness ofthesprayappliedpolyurethanefoam
44、shallbeasspecied+6mm( 1 40in.),in.,exceptwherevariationsarerequiredtoensure drainage or to complete a tapered edge. 9.4 Areastobebuiltupinordertopreventpondingaretobelledinwithsprayappliedpolyurethanefoambeforethespecied thickness is applied to the entire roof surface. 9.5 At parapet walls, building
45、 junctions, and penetrations, the spray applied polyurethane foam shall be terminated a minimum of100mm(4in.)4in.abovetheroofline.Thecoatingsystemshallbecarriedanadditional100mm(4in.)4in.abovethefoam. Foamed in place cants shall be smooth and continuous to allow positive drainage. 9.6 The nal congur
46、ation of the spray applied polyurethane foam surface shall not be excessively rough. Verge of popcorn spray polyurethane foam surfaces are acceptable if sufficient additional coats are applied to ensure a uniform coating at the dry lm thickness specied. Popcorn or tree bark surfaces are not acceptab
47、le. These areas shall be removed and refoamed to an acceptable surface. 9.7 Any damage or defects to the spray applied polyurethane foam surface shall be repaired prior to the protective coating application. 9.8 Sprayappliedpolyurethanefoamshallnotbeappliedwhentheroofdecksurfacetemperatureisbelow10C
48、(50F),50F, as measured by a surface pyrometer, unless low temperature sensitive materials are provided by the foam material supplier. Spray applied polyurethane foam shall not be applied under humid conditions exceeding manufacturers recommendations or when the roof deck surface temperature, as meas
49、ured by a psychrometer is less than 15C (5F )5F above the dew point, as determined at the job site. 9.9 Spray applied polyurethane foam shall only be applied to a previously prepared roof deck surface that is free of loose dirt, dust, oil, grease, and other contaminants that will interfere with proper adhesion. 9.10 All accessory sheet metal shall be solvent cleaned and primed in accordance with the primer and polyurethane foam manufacturers
