1、Designation: D 6630 01Standard Guide forLow Slope Insulated Roof Membrane AssemblyPerformance1This standard is issued under the fixed designation D 6630; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A
2、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 lists test methods intended to establish aminimum level of performance for insulated roof membraneassemblies, and lists per
3、tinent design guidelines and installa-tion methods in a unified manner. Material tests and evalua-tions are included with and without roof insulation.1.2 It is not possible to establish a precise correlationbetween laboratory tests on roof assemblies and natural weath-ering due to variations in geog
4、raphical climate, design, mate-rial and installation.1.3 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 health practices and determine the applica-bility o
5、f regulatory requirements prior to use.2. Referenced Documents2.1 ASTM Standards:D 95 Test Method for Water in Petroleum Products andBituminous Materials by Distillation2D 2523 Practice for Testing Load-Strain Properties of Roof-ing Membranes3D 4434 Specification for Poly(Vinyl Chloride) Sheet Roof-
6、ing3D 4637 Specification for Vulcanized Rubber Sheet Used inSingle-Ply Roof Membrane3D 4798 Test Method for Accelerated Weathering Test Con-ditions and Procedures for Bituminous Materials (Xenon-Arc Method)3D 4799 Test Method for Accelerated Weathering Test Con-ditions and Procedures for Bituminous
7、Materials (Fluores-cent UV and Condensation Method)3D 5019 Specification for Reinforced Non-Vulcanized Poly-meric Sheet Used in Roofing Membrane3D 5147 Test Methods for Sampling and Testing ModifiedBituminous Sheet Material3D 5601 Test Method for Tearing Resistance of Roofing andWaterproofing Materi
8、als and Membranes3D 5602 Test Method for Static Puncture Resistance ofRoofing Membrane Specimens3D 5635 Test Method for Dynamic Puncture Resistance ofRoofing Membrane Specimens3D 5849 Test Method for Evaluating Resistance of Modified,Bituminous Roofing Membranes to Cyclic Joint Displace-ment3E 96 Te
9、st Methods for Water Vapor Transmission of Mate-rials42.2 ASCE Standard:ASCE-7 Minimum Design Loads for Buildings and OtherStructures52.3 ANSI/SPRI Standard:ANSI/SPRI RP-4 Wind Design Guide for Ballasted SinglePly Roof Systems63. Terminology3.1 roof assembliesthe weathering or waterproofing ma-teria
10、l, whether film, flexible membrane, semi-flexible mem-brane, factory or field manufactured; the underlying substrateincluding insulation (if used) above or below the membrane, orboth; supporting deck structure and method of attachment ofthe entire assembly. Low slope roof assemblies may be up to25 %
11、 slope. Some roof assemblies may accommodate higherslopes.3.2 performancethe ability of the roof system as de-signed, manufactured, and installed to provide adequate levelsof expected service life in terms of watertightness, thermalprotection, and condensation control, while being maintain-able. Liv
12、e loading of the roof system may also occur.4. Significance and Use4.1 A roof assembly must work as a system. Any componentof the roof assembly demonstrating an inherent weakness orinability to perform will diminish the roof system performance1This guide is under the jurisdiction of ASTM Committee D
13、08 on Roofing,Waterproofing and Bituminous Materials and is the direct responsibility of Sub-committee D08.20 on Roofing Membrane Systems.Current edition approved Jan. 10, 2001. Published February 2001.2Annual Book of ASTM Standards, Vol 05.01.3Annual Book of ASTM Standards, Vol 04.04.4Annual Book o
14、f ASTM Standards, Vol 04.06.5Available from American Society of Civil Engineering, 1801 Alexander BellDrive, Reston, VA 201914400.6Available from American National Standards Institute and Single Ply RoofingInstitute, 200 Reservoir St., Suite 309A, Needham, MA 02194.1Copyright ASTM International, 100
15、 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.and service life expected. This guide lists minimum perfor-mance attributes required of low slope roof assemblies. Prod-ucts not previously used as roof membrane materials requireadditional tests beyond the scope of thi
16、s document. This guideis not intended for use on in-service roofing materials. Roofmembranes and other components should conform to ASTMproduct standards, if available.5. Roof Design Classifications5.1 Type of Construction:Class ConstructionI New NewII Replace Remove existing roof membrane (and exis
17、ting insulation, ifnecessary) and replaceIII Re-cover Re-cover existing roof membrane5.2 Methods of Attachment:Roof Membrane Configuration Method of AttachmentMethod A Adhered Uses a variety of adhesives includinghot and cold applied.Method B Loose laid ballasted Uses aggregate ballast or pavers.Str
18、ucture needs capacity to carry bal-last dead load.Method LD Loose laid air pressureequalization valvesUses air pressure equalization valvewith loose laid membrane tightly sealedat edge. Needs airtight deck.Method M Partially attached/mechanically fastenedUses a variety of fasteners and attach-ment s
19、chemes that anchor membraneto roof deck for uplift resistance.Method P Protected membrane Uses aggregate ballast, pavers, orother dead load devices for wind upliftresistance of extruded polystyrene.6. Roof Material Attributes6.1 The roof membrane and insulated roof system shall betested according to
20、 the procedures in Table 1. In addition, theTABLE 1 Roof Material AttributesProperty CriteriaA. Static indentation resistanceUse Test Method D 5602.Tested at 18C, 23C, 70C (0F, 73F, 158F).Test membrane with specified insulation system over rigid concrete support.Concrete to have 50 mm (2 in.) minimu
21、m thickness with minimum compressive strength of 17.2 MPa(2 500 psi). If no insulation is used, report none.Report static puncture resistance per Section 11 of TestMethod D 5602 for each test temperature.B. Dynamic indentation resistanceUse Test Method D 5635.Tested at 18C, 23C, 70C (0F, 73F, 158F).
22、Test membrane with specified insulation system over rigid concrete support.Concrete to have compressive strength of 17.2 MPa (2 500 psi). If no insulation is used, report none.Report dynamic puncture resistance per Section 12 of TestMethod D 5635 for each test temperature.C. Cyclical fatiguemembrane
23、 onlyUse Test Condition 3 of Test Method D 5849 at 0C (32F).Run 500 cycles. Report results per Section 11 of TestMethod D 5849. If less than 500 cycles, report cyclesachieved and failure mode.D. Heat conditioningUse this sequence of tests on new roof membranes intended for exposure (smooth or granul
24、esurfaced, plain or reinforced).Membrane materials without existing ASTM material standards should follow the test conditions citedbelow based on color. Membrane materials with existing ASTM material standards should use theheat conditioning test called for.1. For black membrane materials28 days at
25、80C (176F) Report change in tensile strength and elongation.Report changes in sample dimension and thickness.2. For gray membrane materials28 days at 70C (158F) Report change in tensile strength and elongation.Report changes in sample dimension and thickness.3. For white membrane materials28 days at
26、 60C (140F) Report change in tensile strength and elongation.Report changes in sample dimension and thickness.E. UV radiationmembrane only1. For unsurfaced membranes, use Test Method D 4798 or D 4799. Follow test criteria and exposurefor each material standard listed; minimum 4 000 h with condensati
27、on cycle, or minimum irradiancecalled for in ASTM material standards.1. 5.5C (10F) change in low temperature flex.2. Report change in tensile strength and elongation.3. No cracks.4. Report visual appearance and note color change, if any.F. Water exposuremembrane only1. Run 45 cycles of immersion in
28、water at 23C and 50C (62C) (73F and 122F 64F) for 24 hfollowed by dark oven heat aging at 70C (158F) for 24 h. Determine moisture content accordingto Test Method D 95 for membrane at start of test and after 45th cycle.1. 1 % change in weight.2. Report visual appearance and note color change, if any.
29、G. Moisture permeancemembrane only1. Determine according to Test Methods E 96.Use Procedure B or BW at 23C (73F)1. 0.10 perms.2. Report conditioning, procedure and test temperature usedand results.H. Tear resistancemembrane only1. Conduct tear resistance test at 18C, 23C and 70C (62C) (0F, 73F and 1
30、58F 64F) perTest Method D 5601.1. Report tear resistance per Section 7 of Test MethodD 5601 for each temperature tested.I. Tensile strength, elongation, strain energyMembrane only per Practice D 2523; Specifications D 4434, D 4637, or D 5019; or Test MethodD 5147. Include testing of lap seams where
31、called for in the standards.Report values of tensile strength, elongation and/or strainenergy per standard used.D6630012roof membrane shall meet specific test requirements whereidentified.7. Design of Roofing Assembly7.1 The roofing system may consist of the following func-tional layers from the bot
32、tom to the top.7.1.1 structural deck7.1.2 air retarder7.1.3 vapor retarder7.1.4 thermal insulation7.1.5 roofing membrane7.2 The following paragraphs list the minimum designrequirements for each functional layer of the roof assembly.These may exceed the requirements of the local building code.7.2.1 S
33、tructural DeckThe structural deck shall have thecapacity to support the full design load, including dead load,live loads, and environmental loads anticipated or mandated bycode. The dead load of the roof system shall be included as partof the design load. Deck deflection should be limited to L/240un
34、der full design load. Ponding due to deck deflection shouldnot occur. Provide overflow drains or scuppers when interiordrains are used. The live load capacity shall not be less than 98Kg/m2(20 psf) and should have adequate capacity to resistconstruction loads.7.2.2 Air RetarderAir retarders are used
35、 to retard the flowof air from the interior into the roof system. When air retardersare used properly, they reduce the effects from wind on someroofing systems. With care, the vapor retarder and air retarderfunctions may be provided by the same materials.7.2.3 Vapor RetarderThe vapor retarder retard
36、s the trans-fer of the moist-warm interior vapor into the roofing system. Avapor retarder should be used on the warm side of the systemover moist occupancies, and at locations where the quantity ofmoisture accumulated in the winter exceeds the moisturecapacity of the materials in the system.7.2.4 Th
37、ermal InsulationThermal insulation must be usedwherever a building is heated or cooled except industrialfacilities where excess process heat needs to be dissipated.Where used, it should be installed in two or more layers withoffset joints. Tapered insulation can be used where necessary toprovide a p
38、ositive slope to the drains. Provide sump areas at allroof drains to assist drainage. The insulation selected must becompatible with the membrane system selected and have theheat, moisture stability and compressive resistance needed forthe application selected.7.2.5 Roofing MembraneThe roofing membr
39、ane may besingle ply or multi-ply, depending on the materials involved.Where applicable, the properties of the roof membrane shallmeet or exceed the minimum values shown in Table 1 beforeand after artificial weathering, heat conditioning, water immer-sion, and fatigue cycling.7.3 Roof System Design:
40、7.3.1 The membrane material selected for use shall pass thetests outlined in Section 6, modified to reflect the weatherextremes anticipated for the locality of use, including wind.7.3.2 All classes of roof construction should have a positiveslope to drain (2 % minimum for new construction, other tha
41、ncoal tar roof assemblies and l % minimum for new constructionfor coal tar roof assemblies).7.3.3 Consideration for use of a vapor retarder should begiven for all new roof construction and roof replacementconstructions. Roof re-cover constructions shall be evaluatedas a roof system with the existing
42、 roof serving as a vaporretarder, unless the existing roof membrane is cut open beforere-cover.7.3.4 Roof re-cover constructions should have no entrappedmoisture greater than the equilibrium moisture content (forinsulation material) at 21C (70F) and 90 % relative humidity,or make provisions to handl
43、e entrapped moisture in a timelyfashion without degradation to the roofing assembly.7.3.5 Mechanical fasteners that hold the membrane down,either directly or indirectly, shall be considered active fasten-ers. All other fasteners shall be considered passive. All fasten-ers shall be evaluated for corr
44、osive resistance per Section 4.1of the SPRI Guide.7Report amount of surface corrosionobserved.7.3.6 Method M roofs using mechanical fasteners shouldhave a factor of safety of 2.0 against fastener pullout.7.3.7 Wind uplift forces should be determined according toASCE-7. Roof system wind uplift resist
45、ance shall have aminimum 2.0 factor of safety. For ballasted single ply roofs useANSI/SPRI RP-4 for determining their wind uplift resistance.7.3.8 Deck and wall movements should be accounted for inthe design, including differential movements of discrete ele-ments.7.3.9 Design elevation of adjoining
46、deck elements shall notdiffer by more than 6 mm (0.25 in.) in elevation change.NOTE 1Interior drains are recommended in climates where ice forms;they should be installed in the heated areas of buildings, where possible;reduce or omit insulation around drains. Gutters are only recommended inwarmer cl
47、imates, or where interior drains are not practical. Scuppers aregenerally used as emergency overflow for roofs with parapets; sizescuppers large enough to allow for prompt drainage based on local rainintensity records. No part of the roofing system should be permitted toblock the prompt drainage of
48、water.NOTE 2Mechanical ProtectionThe mechanical protection layerhelps resist impact, external fire, and in some assemblies, also protects themembrane from destructive solar radiation. Metallic skins, aggregate,stone ballast, granules, and concrete pavers are frequently used.8. Keywords8.1 cyclical f
49、atigue; dynamic puncture; felts; heat condition-ing; moisture content; multiple ply; roofing membrane; singleply; static puncture; structural deck; temperature; thermalinsulation; wind tear resistance7Flexible Membrane Roofing: A Professionals Guide to Specifications, pub-lished by Single Ply Roofing Institute, Needham, MA.D6630013ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that
