1、Designation: D 5469 00 (Reapproved 2005)Standard Guide forApplication of New Spray Applied Polyurethane Foam andCoated Roofing Systems1This standard is issued under the fixed designation D 5469; the number immediately following the designation indicates the year oforiginal adoption or, in the case o
2、f revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This guide covers the application of new roofing sys-tems consisting of spray applied polyure
3、thane foam insulation,elastomeric protective coatings, and optional mineral granules.This guide does not apply to retrofit or remedial applications.1.2 Design criteria associated with the installation of sprayin place polyurethane foam are beyond the scope of thisspecification.1.3 The values stated
4、in SI units are to be regarded as thestandard. The values given in parentheses are for informationonly.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and h
5、ealth practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C 1029 Specification for Spray-Applied Rigid CellularPolyurethane Thermal InsulationD 451 Test Method for Sieve Analysis of Granular MineralSurfacing for Asphalt Roofing
6、 ProductsD 1079 Terminology Relating to Roofing and Waterproof-ingD 1621 Test Method of Compressive Properties of RigidCellular PlasticsD 1622 Test Method for Apparent Density of Rigid CellularPlasticsD 2856 Test Method for Open-Cell Content of Rigid Cel-lular Plastics by the Air PycnometerD 4442 Te
7、st Methods for Direct Moisture Content Measure-ment of Wood and Wood-Base Materials2.2 Other Standard:SSPC SP-6 Steel Structures Painting Council32.3 Spray Polyurethane Foam Alliance Documents:4AY-102 Guide for Selection of Protective Coatings OverSpray Polyurethane Foam Roofing SystemsAY-104 Spray
8、Polyurethane Foam Roofing Systems forNew and Remedial RoofingAY-118 Moisture Vapor TransmissionNRCA Roofing and Waterproofing Manual, Spray Polyure-thane Foam-Based Roofing ManualNRCA/SPFA Quality Control Guidelines for the Applicationof Spray Polyurethane Foam RoofingNRCA/SPFA Manual for Inspection
9、 and Maintenance ofSpray Polyurethane Foam-Based Roof Systems, A Guidefor Building Owners2.4 Other Documents:Underwriters Laboratories, Roofing Materials and SystemsDirectory5Factory Mutual Research Corporation, Loss PreventionData Sheets 1286Alliance for the Polyurethane IndustryAX119 Guide for the
10、Safe Handling and Use of Polyurethane and Polyisocya-nurate Foam Systems4NOTE 1Details: Numerous details are found in the referenced docu-ments, in foam and coating manufacturers literature, and from othersources. These details are to be considered general in nature. They shouldnot be used without m
11、odification to allow for movement between thebuilding, roofing, roof top equipment, and roof drainage systems.3. Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nology D 1079.1This guide is under the jurisdiction of ASTM Committee D08 on Roofing andWaterproofing and is the direct
12、responsibility of Subcommittee D08.06 on SprayPolyurethane Foam Roof Systems.Current edition approved May 1, 2005. Published May 2005. Originallyapproved in 1993. Last previous edition approved in 2000 as D 5469 00.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM
13、Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from Society for Protective Coatings (SSPC), 40 24th St., 6th Floor,Pittsburgh, PA 15222-4656.4Available from Spray Polyurethane Foam A
14、lliance, 1300 Wilson Boulevard,Suite 800, Arlington, VA 22209.5Available from Underwriters Laboratories (UL), Corporate Progress, 333Pfingsten Rd., Northbrook, IL 60062.6Available from Factory Mutual Research Corporation, 1151 Boston-ProvidenceTpke., Norwood, MA 02062.1Copyright ASTM International,
15、100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3.2 Definitions of Terms Specific to This Standard: Figs. 1-6show the various types of polyurethane foam surfaces.3.2.1 coarse orange peel surfacea surface of spray ap-plied polyurethane foam that is slightly rough,
16、having irregu-larities that form obtuse angles with the plane of the surface.3.2.2 core samplescylindrical sections of approximately50 to 75 mm (2 to 3 in.) diameter. They shall be cut using around metal template or coring tool, and they shall extend fromsurface down to substrate.3.2.3 lifta single
17、application of spray applied polyure-thane foam.3.2.4 lightweight or insulating concrete fillconcrete madewith or without aggregate additions to portland cement, water,and air to form a hardened material which, when oven dried,will have a unit weight of 800 kg/m3(50 lb/ft3) or less.3.2.5 orange peel
18、 surfacea surface of spray applied poly-urethane foam that is relatively smooth, but has a slightlyrippled or dimpled appearance.3.2.6 popcorn surfacea surface of spray applied polyure-thane foam that is extremely rough, having irregularities thatform angles which are perpendicular to the plane of t
19、hesurface.3.2.7 verge of popcorn surfacea surface of spray appliedpolyurethane foam that is moderately rough, but does notexhibit sharp angles perpendicular to the plane of the surface.3.2.8 slit samplescrescent-shaped samples approximately25 mm (1 in.) long and 12.5 mm (12 in.) in depth. They areus
20、ed to check coating surface quality and coating adhesion andthickness.3.2.9 smooth surfacea surface of spray applied polyure-thane foam that is relatively smooth.3.2.10 tree bark surfacea surface of spray applied poly-urethane foam that is extremely rough and irregular, havingundercuts (upper surfac
21、e of foam overhangs a lower surface)and usually accompanied by pinholes.4. Significance and Use4.1 This guide outlines general procedures and precautionsnecessary for correct and safe application of spray appliedpolyurethane foam roofing systems.4.2 This guide is not all-inclusive; this guide is int
22、endedonly to supplement detailed instructions from manufacturersand safety requirements established by law.4.3 Refer to Polyurethane Foam Contractors Alliance AY-104 and NRCA Spray Polyurethane Foam-Based Manual forindustry guidelines.5. Substrate Requirements5.1 General Requirements:5.1.1 Applicati
23、on shall conform to codes having jurisdic-tion.5.1.2 All substrates shall be clean and free of moisture, dust,oil, grease, and release agents or other contaminants.5.1.3 If a vapor retarder is specified, it should be installed inaccordance with instructions of the vapor retarder manufac-turer and be
24、 compatible with the spray applied polyurethanefoam and substrate being covered. Refer to SPI/PFCD docu-ment AY-118.5.1.4 If a primer is specified or required, it shall be installedto a clean surface in accordance with the primer manufacturersinstructions. The primer must be suitable for the substra
25、te, beable to meet service temperature requirements, be compatiblewith the spray applied polyurethane foam, and acceptable tothe foam manufacturer.FIG. 1 Polyurethane Foam TextureSmoothD 5469 00 (2005)25.2 Metal:5.2.1 Metal decks shall conform to requirements of the SteelDeck Institute,7American Iro
26、n and Steel Institute (AISI),8American Society of Civil Engineers (ASCE),97-88 andFactory Mutual Research Corporation (FMRC).65.2.2 Surface Preparation:5.2.2.1 Ferrous MetalSandblast iron and steel surfaceswhich are not primed, shop painted, or otherwise protected inaccordance with SSPC SP-6. Remove
27、 loose rust and unsoundprimer from shop-primed iron and steel surfaces. The sand-blasted area shall be primed the same day.5.2.2.2 Non-Ferrous MetalClean and prime all surfacesas recommended by primer and foam manufacturer.7Available from Steel Deck Institute (SDI), PO Box 25, Fox River Grove, IL600
28、21-0025.8Available from American Iron and Steel Institute (AISI), 1140 ConnecticutAve., Suite 705, Washington, DC 20036.9Available from American Society of Civil Engineers (ASCE), 1801 AlexanderBell Dr., Reston, VA 20191.FIG. 2 Polyurethane Foam TextureOrange PeelFIG. 3 Polyurethane Foam TextureCoar
29、se Orange PeelD 5469 00 (2005)35.2.2.3 Fluted metal decks shall have flutes filled, covered,or taped with materials and procedures approved by themanufacturer of the polyurethane foam, prior to spray appliedpolyurethane foam application.5.2.3 Lightweight corrugated roofs, which are secured tomeet in
30、dustry standards, shall meet the surface requirements in5.2.1 and 5.2.2.5.3 Concrete:5.3.1 All joints and cracks that exceed 6 mm (14 in.) shall befilled, covered, or taped with materials and procedures ap-proved by the manufacturer of the polyurethane foam, prior toapplication of spray applied poly
31、urethane foam.5.3.2 Primer, if required, shall be as recommended by theprimer or polyurethane foam manufacturer.5.3.3 Sprayed polyurethane foam is not recommended di-rectly over lightweight nonstructural concretes.5.4 Wood:5.4.1 Wood shall contain no more than 18 % moisture, asmeasured in accordance
32、 with Test Methods D 4442.5.4.2 Wood surfaces shall be primed with exterior gradeprimer as recommended by the primer and polyurethane foammanufacturers.FIG. 4 Polyurethane Foam TextureRippling Verge of PopcornFIG. 5 Polyurethane Foam TexturePopcornD 5469 00 (2005)45.4.3 Wood joints in excess of 6 mm
33、 (14 in.) shall be tapedor filled with materials and procedures approved by themanufacturer of the polyurethane foam.5.4.4 Wood plank must be overlaid with a material, ap-proved by the polyurethane foam manufacturer and secured bymethods proven to meet the wind resistance requirements ofFMRC, Underw
34、riters Laboratory (UL), and local buildingcodes.5.5 Gypsum Board:5.5.1 Boards shall be firmly butted together and mechani-cally fastened. Joints exceeding 6 mm (14 in.) shall be filled ortaped with materials and procedures approved by the manu-facturer of the polyurethane foam.5.5.2 Wet gypsum is no
35、t acceptable (see 9.10).5.5.3 Cleaning by power brooming is not permitted.6. Slope6.1 The finished roofing system shall be sloped a minimumof 6 mm/m (14 in./ft) to minimize ponding.7. Equipment7.1 The spray applied polyurethane foam shall be meteredand mixed through equipment capable of providing a
36、ratio ofequal parts of “A” (isocyanate) component and “B” (polyol)component, by volume to within an accuracy of 62%.7.2 Spray applied polyurethane foam ratio control shall bemonitored by equipment pressure gages, which indicate con-stant pressure, and by uniform color of the spray appliedpolyurethan
37、e foam.7.3 Spray applied polyurethane foam equipment shall pro-vide temperature control of the “A” component and “B”component to within an accuracy of 2.8C (65F).7.4 Spray equipment used to apply coating shall be inaccordance with the coating manufacturers recommendations.8. Safety Requirements8.1 A
38、ll handling, storage, applications, and end use safetyprecautions shall be as outlined by the material manufacturersand SPI Polyurethane Division Technical Bulletin AX119.8.2 Refer to appropriate Material Safety Data Sheets(MSDS) for additional safety information.8.3 Conform to local codes and ordin
39、ances.9. Polyurethane Foam Material and ApplicationRequirements9.1 The spray applied polyurethane foam shall meet thephysical requirements of Specification C 1029 Type III.9.2 The spray applied polyurethane foam lifts must beapplied in a thickness of 12.5 mm (12 in.) or greater. The foammanufacturer
40、 must be consulted if the foam is to be applied inlifts greater than 37 mm (112 in.).9.3 The total spray applied polyurethane foam thicknessshall be a minimum of one in. (or more if specified). The totalthickness of the spray applied polyurethane foam shall be asspecified+6mm(14 0 in.), except where
41、 variations arerequired to ensure drainage or to complete a tapered edge.9.4 Areas to be built up in order to prevent ponding are to befilled in with spray applied polyurethane foam before thespecified thickness is applied to the entire roof surface.9.5 At parapet walls, building junctions, and pene
42、trations,the spray applied polyurethane foam shall be terminated aminimum of 100 mm (4 in.) above the roof line. The coatingsystem shall be carried an additional 100 mm (4 in.) above thefoam. Foamed in place cants shall be smooth and continuous toallow positive drainage.9.6 The final configuration o
43、f the spray applied polyure-thane foam surface shall not be excessively rough. “Verge ofpopcorn” spray polyurethane foam surfaces are acceptable ifsufficient additional coats are applied to ensure a uniformcoating at the dry film thickness specified.“ Popcorn” or “treeFIG. 6 Polyurethane Foam Textur
44、eTree BarkD 5469 00 (2005)5bark” surfaces are not acceptable. These areas shall be removedand refoamed to an acceptable surface.9.7 Any damage or defects to the spray applied polyure-thane foam surface shall be repaired prior to the protectivecoating application.9.8 Spray applied polyurethane foam s
45、hall not be appliedwhen the roof deck surface temperature is below 10C (50F),as measured by a surface pyrometer, unless low temperaturesensitive materials are provided by the foam material supplier.Spray applied polyurethane foam shall not be applied underhumid conditions exceeding manufacturers rec
46、ommendationsor when the roof deck surface temperature, as measured by apsychrometer is less than 15C (5F ) above the dew point, asdetermined at the job site.9.9 Spray applied polyurethane foam shall only be appliedto a previously prepared roof deck surface that is free of loosedirt, dust, oil, greas
47、e, and other contaminants that will interferewith proper adhesion.9.10 All accessory sheet metal shall be solvent cleaned andprimed in accordance with the primer and polyurethane foammanufacturers recommendations.9.11 Spray applied polyurethane foam shall not be appliedin rain, snow, fog, or mist. T
48、he surface to which spray appliedpolyurethane foam is applied shall be dry. The presence ofsurface moisture can be determined by the use of moisturedetection paper (MDP).109.12 Spray applied polyurethane foam shall not be appliedwhen wind conditions exist that prevent application withacceptable surf
49、ace texture (see 9.6) or that cause overspray onsurfaces that are not intended for coverage by either sprayapplied polyurethane foam or the coating system.9.13 The full thickness of spray applied polyurethane foam,in any area, shall be completed prior to the end of each day.Permissible exceptions shall be lead edges.9.14 Care shall be taken not to block drainage from adjacentmasonry, stone, or other building components. Use care wheninstalling flashing so as not to close weep holes originallydesigned to allow escape of water.10. Coating
