1、Designation: D8014 17Standard Guide forSelection of Membranes Used in Vegetative RoofingSystems1This standard is issued under the fixed designation D8014; 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 () indicates an editorial change since the last revision or reapproval.1. Scope1.1 The purpose of this guide is to provide guidance in theselection of a suitable waterproofing membrane within avegetative roof system.
3、The guide offers various options forreviewing the membrane installation during and upon comple-tion of the installation and prior to the vegetative componentsbeing installed. This guide applies to membranes that do or donot require UV protection. For the purpose of this guide, thesupporting structur
4、e and roof deck are assumed to be mechani-cally and structurally sound and will accept the weight of thevegetative roof system including the membrane, insulation, andother roofing/waterproofing components including all compo-nents related to the vegetative layers as well as the requireddesign loads.
5、 Slope to drain at the membrane level is preferredand should be included where possible. Providing a replace-ment or a re-cover vegetative roofing system on an existingbuilding may require that the support structure be reinforced sothat it can safely support the additional weight of the vegetativero
6、of system and also provide the minimum live load capacityrequired by the building code.1.2 Design criteria associated with the vegetative portionsof the system are beyond the scope of this guide. Please referto Guide E2777.1.3 This standard does not purport to address all of thesafety concerns, if a
7、ny, 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 of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized
8、 principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D1079 Terminology Relating
9、 to Roofing and WaterproofingD5957 Guide for Flood Testing Horizontal WaterproofingInstallationsD7877 Guide for Electronic Methods for Detecting andLocating Leaks in Waterproof MembranesE2777 Guide for Vegetative (Green) Roof Systems2.2 ANSI/SPRI Standards:3ANSI/SPRI VR-1 Procedure for Investigating
10、 Resistance toRoot Penetration on Vegetative Roofs2.3 Other Standards and Documents:FLL Guidelines for the Planning, Construction and Mainte-nance of Green Roofing Green Roofing Guideline Sec-tion 6.3 Protection Against Damage to the Waterproofing/ Root-resistant Membranes FLL Procedure for Investig
11、at-ing Resistance to Root Penetration of Roof Membranesand Protective Layers for Green Roofing43. Terminology3.1 DefinitionsFor definitions of terms used in this guide,see Terminology D1079.4. Significance and Use4.1 This guide provides the general information,procedures, and guidelines for the sele
12、ction of the waterproof-ing membrane to create a waterproofing system for a Vegeta-tive (Green) roof.4.2 This guide is not all inclusive; this guide is intended tosupplement detailed instructions from manufacturers, ASTMStandards, and building code requirements.5. Roof Design Classifications5.1 Type
13、s of Constructions or Applications:1This guide is under the jurisdiction of ASTM Committee D08 on Roofing andWaterproofing and is the direct responsibility of Subcommittee D08.24 on Sustain-ability.Current edition approved July 15, 2017. Published August 2017. DOI: 10.1520/D8014-17.2For referenced A
14、STM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4
15、th Floor, New York, NY 10036, http:/www.ansi.org.4Available from Forschungsgesellschaft Landschaftsentwicklung Landschafts-bau e.V. (FLL), Friedensplatz 4, 53111 Bonn, Germany, www.fll.de.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United State
16、sThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trad
17、e (TBT) Committee.15.1.1 NewA vegetative roof can be integrated with theother building elements during construction. All new compo-nents are used to construct the roofing/waterproofing system.Performance and service requirements of the vegetated roof areaddressed in the building design.5.1.1.1 Repla
18、cement (Total)Removal of existing roof sys-tem and all roof system components (roof membrane, coverboard, insulation, vapor retarder, support panels, etc.) down tothe supporting deck and replacing with new vegetative roofsystem and vegetative roof system components. Total replace-ment allows for an
19、evaluation of the roof deck and structure todetermine if additional repairs, structural enhancements, orreplacement are needed to accommodate the new vegetativeroof system.5.1.1.2 Replacement (Partial)Removal of existing roofmembrane system. Existing roof system components below themembrane, such as
20、 cover boards, insulation, vapor barrier, etc.,may be left in place if determined to meet the requirements forthe newly installed system. A thorough assessment of thosecomponents left in place should be carried out to determinetheir condition. Particular attention should be given to theirsecurement
21、and wind uplift resistance. All damaged, moisturecontaminated, and deteriorated components should be removedand replaced with new components.5.1.2 Re-coverA new waterproofing membrane is in-stalled over the existing membrane system. A thorough evalu-ation of the existing roof system, decking and str
22、ucture shouldbe performed to determine that it is suitable for the newvegetative roof system. A series of test cuts, together withnon-destructive moisture methods such as infrared thermogra-phy and nuclear moisture scanning, can be used to examineroofs for wet areas. All damaged, moisture contaminat
23、ed anddeteriorated components should be removed and replaced withnew.6. Vegetative Roofing Membrane and System Attributes6.1 Vegetative waterproofing membranes have different re-quirements than membranes intended to be exposed in-servicedue to the fact the membrane will be buried under thecomponents
24、 of the vegetative layers, subject to a moist,microbial environment, and not readily accessible for inspec-tion and maintenance. The service life of the waterproofingmembrane may be influenced by the type of material, thethickness of the membrane, and the method of attachment.Refer to the flow chart
25、 in Fig. 1 for assistance in choosing thewaterproofing membrane.6.2 Methods of Membrane Securement for VegetativeRoofsSee Table 1.6.3 Vegetative waterproofing membranes will more likelyhave more water retained above the membrane, and be moreoften in contact with damp materials, than roofs with expos
26、edmembranes. Waterproofing membranes used in vegetativeroofing systems should be capable of withstanding hydrostaticpressure as well as resisting absorption of water, water vapordiffusion, deterioration from contact with damp materials ormoisture for long periods of time.NOTE 1If a loose laid waterp
27、roofing membrane utilizes an integrallybonded reactive layer to the underside of the waterproofing membrane, thereactive material layer may be excluded from this absorption property.6.4 The vegetative waterproofing membrane should be pro-tected from root penetration at any point including intomembra
28、ne laps and seams. Some waterproofing membranessystems have the ability to block root penetration, while otherwaterproofing membranes will require an additional sheet toprovide protection from root penetration. Any waterproofingmembrane employed as a root barrier should comply with FLLor ANSI/SPRI V
29、R-1 requirements for acceptable root barriers.6.5 Vegetative waterproofing membranes may be exposed tovarious chemicals such as fertilizers, pesticides, and herbicidesand should be resistant to these chemicals. The waterproofingmembrane should also be resistant to mold, fungal, andbiological growth.
30、6.6 Waterproofing membranes that may be exposed to theelements (not covered with vegetation or ballast) should berated for the required wind and fire exposures and be formu-lated for exposure to the elements.7. Quality Assurance7.1 Visual and physical inspections of the waterproofingmembrane should
31、be scheduled during installation as well asprior to the installation of the vegetative components. Theinspections may be conducted by one or all of the following; atrained monitor, the designer or the roof membrane supplier.Verify that the waterproofing membrane is installed in accor-dance with the
32、written specifications, details, and submittals.7.2 Along with the visual and physical inspections addi-tional methods of leak detection are recommended beforecovering the membrane, such as flood testing or electronic leakdetection. Some types of membranes require adding metalcomponents or metallic
33、primer coating in order to work withELD.7.2.1 Flood TestsFlood testing should be carried out inconformance with Guide D5957. Flood testing is not intendedfor steep slope vegetative roofs.7.2.2 Electronic Leak DetectionElectronic leak detectiontesting should be carried out in conformance with GuideD7
34、877.8. Keywords8.1 root resistance; UV resistance; vegetative roofing; wa-terproofing membraneD8014 172FIG. 1 Membrane Selection Flow ChartD8014 173ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users
35、of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every fi
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38、A 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy t
39、he standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 1 Methods of Membrane Securement for Vegetative RoofsA, BMembrane Configuration Method of AttachmentAdhered Uses adhesives, hot or cold applied. Includes self-adhesi
40、ve roof membranes.Loose Laid The weight of the vegetative system, aggregate ballast, and or pavers provides the wind uplift resistance.Protected Membrane Assembly The roof insulation is placed above the waterproofing membrane which may be adhered or loosely laid onto the deck.The vegetative roof com
41、ponents (drainage layer, growing medium, plantings, etc.) are placed on top of the insulation.The weight of the vegetative system, aggregate ballast, and or pavers provides the wind uplift resistance andprevents floatation and displacement of the insulation.Mechanically Attached The waterproofing me
42、mbrane is attached to the deck with discrete fasteners, battens, or bars, or combinationsthereof.AIt is generally considered best practice to have the waterproofing membrane adhered to the roof deck to limit water migration should there be a leak and it protectsagainst membrane loss if the plants di
43、e and the soil blows away. With a loose laid or mechanically attached membrane, it is suggested to use a containmentmechanism under the waterproofing membrane to isolate or prevent lateral water migration. The containment mechanism can be a material grid system or asecondary reactive layer integrally bonded to the membrane to stop lateral water migration.BThe type of membrane securement and UV resistance may be considered during the design stage if the vegetative system may be removed during the service lifeof the membrane.D8014 174
