1、Designation: C 1535 05Standard Practice forApplication of Exterior Insulation and Finish Systems ClassPI1This standard is issued under the fixed designation C 1535; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last r
2、evision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This practice covers the minimum requirements andprocedures for field or prefabricated application of Class PIExterior Ins
3、ulation and Finish Systems (EIFS). Class PI EIFSare systems applied over polyisocyanurate insulation board, inwhich the base coat ranges from not less than116 in. (1.6 mm)to14 in. (6.4 mm) in dry thickness, depending upon the numberof nonmetallic reinforcing mesh layers encapsulated in the basecoat.
4、 The base coat is then covered with a finish coat of variousthickness in a variety of textures and colors. The insulationboard shall be applied over a substrate or over open framing.1.2 This practice does not cover Class PI EIFS with drain-age. Consult the EIFS producer for information.1.3 The value
5、s stated in inch-pound units are to be regardedas the standard. The SI (metric) values given in parentheses areapproximate and are provided for information purposes only.1.4 The text of this standard references notes and footnotesthat provide explanatory material. These notes and footnotesshall not
6、be considered as requirements of the standard.1.5 This standard may involve hazardous materials, opera-tions and equipment. This standard does not purport to addressall of the safety concerns, if any, associated with its use. It isthe responsibility of the user of this standard to establishappropria
7、te safety and health practices and determine theapplicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C11 Terminology Relating to Gypsum and Related Build-ing Materials and SystemsC 79/C 79M Specification for Treated Core and NontreatedCore Gypsum Sheathing
8、BoardC 150 Specification for Portland CementC 1063 Specification for Installation of Lathing and Furringto Receive Interior and Exterior Portland Cement-BasedPlasterC 1177 Specification for Glass Mat Gypsum Substrate forUse as SheathingC 1186 Specification for Flat Non-Asbestos Fiber-CementSheetsC 1
9、278/C 1278M Specification for Fiber-Reinforced Gyp-sum PanelC 1280 Specification for Application of Gypsum SheathingC 1289 Specification for Faced Rigid Cellular Polyisocya-nurate Thermal Insulation BoardC 1325 Specification for Non-Asbestos Fiber-Mat Rein-forced Cement Substrate SheetsC 1382 Test M
10、ethod for Determining Tensile AdhesionProperties of Sealants When Used in Exterior Insulationand Finish Systems (EIFS) JointsC 1472 Guide for Calculating Movement and Other EffectsWhen Establishing Sealant Joint WidthC 1481 Guide for Use of Joint Sealants with ExteriorInsulation and Finish Systems (
11、EIFS)E 1825 Guide for Evaluation of Exterior Building WallMaterials, Products, and SystemsE2110 Terminology for Exterior Insulation and Finish Sys-tems (EIFS)3. Terminology3.1 Definitions used in this standard shall be in accordancewith Terminologies C11and E2110.4. Significance and Use4.1 This prac
12、tice provides minimum requirements for theapplication of Class PI EIFS. The requirements for materials,mixtures, and details shall be contained in the project plans andspecifications. See Guide E 1825 for guidance.1This practice is under the jurisdiction of ASTM Committee C11 on Gypsumand Related Bu
13、ilding Materials and Systems and is the direct responsibility ofSubcommittee C11.05 on Application of Exterior Insulating and Finish Systems andRelated Products.Current edition approved October 1, 2005. Published October 2005. Originallyapproved in 2002. Last previous edition approved in 2004 as C 1
14、535 04.2For referenced ASTM 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.1*A Summary of Changes section appears at the end of t
15、his standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.5. Delivery of Materials5.1 All materials shall be delivered in packages, containers,or bundles with the identification and markings intact.6. Inspection6.1 Inspection of th
16、e materials shall be agreed upon and bea part of the purchase agreement.6.2 Inspection shall include the determination that the ma-terials supplied are as required for the Class PI EIF Systemspecified. Mixing of materials from different manufacturers isnot allowed.7. Rejection7.1 Materials that are
17、damaged, frozen or defective shall notbe used. Rejection of materials shall be promptly reportedverbally to the producer and immediately reported in writing.The notice of rejection shall contain a statement documentingthe basis for material rejection.8. Certification8.1 When specified in the contrac
18、t documents, the producershall furnish a report certifying that the materials are inconformance with product and material standards and contractdocuments.8.2 Insulation Boards:8.2.1 Insulation boards shall be in compliance with Speci-fication C 1289 , Type II, Class 2.8.2.2 Insulation boards shall h
19、ave been subjected to a thirdparty quality control inspection and shall be marked asapproved for use within the EIFS and in accordance withapplicable building code.8.2.3 Prior to installation, the insulation board shall beinspected for conformance with contract documents. Noncon-forming insulation b
20、oard shall not be used.8.2.4 The insulation board producer shall furnish, for eachshipment, a written certificate of conformance with the EIFSproducers specifications.9. Storage of Materials9.1 All materials shall be kept dry by storage under coverand protected from the weather. When outside storage
21、 isrequired, materials shall be stacked off the ground, supportedon a level platform and protected from the weather, surfacecontamination or physical damage in accordance with the EIFSproducers written instructions.9.2 Materials shall be protected from exposure to directsunlight and temperatures les
22、s than 40 F (4 C) unlessotherwise specified by the manufacturer.9.3 Portland Cement shall meet Specification C 150 andshall be kept dry until ready for use. It shall be kept off theground, under cover and away from damp walls and surfaces.9.4 Insulation board shall be stacked flat with care taken to
23、avoid damage to edges, ends, or surfaces; or exposure to directsunlight (ultraviolet radiation).10. Environmental Conditions10.1 Cold Weather Conditions:10.1.1 Wet materials shall not be applied when the tempera-ture is less than 40 F (4 C) unless otherwise specified by themanufacturer or unless tem
24、porary heat and enclosures areprovided to maintain minimum 40 F (4 C) for a minimumperiod of not less than 24 hours before, during and afterapplication. (See X1.8.3)10.1.2 Materials shall not be applied to a base containingfrost. Substrate surface temperature shall be not less than 40 F(4 C). Mixtur
25、es for application shall not contain any frozeningredients.11. Assessment of Condition of Substrates to ReceiveExterior Insulation and Finish Systems11.1 The substrate shall be as required by the project plansand specifications and as recommended by the EIFS producerfor the particular system specifi
26、ed.11.1.1 Polyisocyanurate boards for use over open framing inconformance with the EIFS producers specification shall notbe less than 1.0 in. (25.4 mm) in thickness.11.1.2 Polyisocyanurate boards for use over a substrate inconformance with the EIFS producers specification shall notbe less than58 in.
27、 (15.9 mm) in thickness.NOTE 1Polyisocyanurate board thickness shall conform to buildingcode requirements.11.2 The substrate shall be inspected by the applicator andgeneral contractor to assure that it meets the project plans andspecifications and the requirements of 11.3-11.8.11.3 Sheathing materia
28、ls shall be inspected to ensure thefollowing:11.3.1 The specified sheathing thickness has been installedfor the stud spacing used.11.3.2 Fastener type and fastener spacing are as specified.11.3.3 All Specification C 79/C 79M gypsum sheathingboards have a water-resistant treated core.11.3.4 Tongue an
29、d groove water-resistant core gypsumsheathing boards conforming to Specification C 79/C 79M areinstalled with the tongue edge oriented to the top.11.3.5 Gypsum sheathing shall be installed with the facepaper exposed in accordance with Specification C 1280.11.3.6 Gypsum sheathing shall be protected f
30、rom moistureat all penetrations and terminations.11.3.7 Glass mat gypsum sheathing complying with Speci-fication C 1177 shall be installed in accordance with thesheathing producers written installation instructions, whichinclude details of framing type and spacing, fastener type andspacing, and shea
31、thing orientation and spacing.11.3.8 Plywood shall be not less than12 in. (12.7 mm)nominal in thickness, exterior or exposure 1 panel sheathing.The plywood shall be installed with a18 in. (3.2 mm) spacebetween sheets at edges and ends.11.3.9 Fiber-Cement sheets complying with SpecificationC 1186, Ty
32、pe A, shall be installed in accordance with the sheetproducers written installation instructions, which include de-tails of stud type and spacing, fastener type and spacing, andsheet spacing recommendations.11.3.10 Water-resistant exterior fiber-reinforced gypsumsheathing complying with Specificatio
33、n C 1278/C 1278M shallbe installed in accordance with the sheathing producersC1535052written installation instructions, which include details of fram-ing type and spacing, fastener type and spacing, and sheathingorientation and spacing.11.3.11 Fiber-mat reinforced cement sheets complying withSpecifi
34、cation C 1325, type A, shall be installed in accordancewith the sheet producers written installation instructions,which include details of framing type and spacing, fastenertype and spacing, and sheet orientation and spacing.11.3.12 Sheathing shall be continuous.11.4 AlignmentAll substrate surfaces
35、shall be straight andtrue within14 in./10 ft (2 mm/m). More stringent requirementsby the EIFS producer shall supersede the above stated require-ments.11.5 Suitability for UseThe substrate shall be firm, sound,and undamaged in order to receive the EIFS.11.6 CleanlinessThe surface of all substrates sh
36、all beclean and free from any foreign materials such as paint, formrelease agents, curing compounds, dust, dirt, frost, oil orgrease, efflorescence and laitance that would affect the EIFSapplication.11.7 Dryness:11.7.1 Newly constructed concrete or masonry surfacesshall be allowed to cure not less t
37、han 28 days prior toapplication of the EIFS. Repaired areas on existing (aged)walls shall meet the same 28-day curing time.11.7.2 Substrate surfaces shall be free of visible water.11.8 Metal Lath or Furring and AccessoriesIf metal lathor furring and accessories are used, they shall be installed inco
38、nformance with Specification C 1063, except lath edges andends shall be butted and not lapped. Metal lath shall be 3.4lb/yd2(1.3 kg/m2) self-furring, galvanized.11.8.1 Metal members shall be properly attached, straight,and true unless otherwise required by the system design.11.8.2 Metal members shal
39、l be free of rust, oil, or otherforeign matter or contaminants, which cause bond failure orunsightly discoloration.12. Insulation Board Installation12.1 Method of Attachment shall be approved by thesystem producer and be in accordance with applicable buildingcode.12.2 Mechanical Attachment Method:12
40、.2.1 Mechanical fasteners shall be installed into the fram-ing or nailable substrate.12.2.2 Mechanical fasteners shall be corrosion resistant.Fastener type and spacing shall be in accordance with systemproducers current published instructions.NOTE 2Specific consideration of building code wind load r
41、equire-ments shall be given for mechanically fastened systems.12.3 Placement of a weather resistive barrier, if specified,shall be as required by the system producer.13. General Requirements13.1 Insulation boards shall be placed from a level base linewith vertical joints staggered in a running bond
42、pattern andbutted tightly. Over open framing, joints shall occur overframing or horizontal blocking.13.2 Insulation board joints at all inside and outside cornersshall be staggered and interlocked.13.3 Insulation boards must abut without gaps, eliminatingspace for base coat intrusion between the boa
43、rd edges andends.13.4 Fenestration opening corners and other wall penetra-tions shall be cut out of a single insulation board. Board jointsshall not be aligned at corners with head, sill or jambs ofwindows, doors, similar openings, and aesthetic reveals.13.5 Mechanically Fastened:13.5.1 Insulation b
44、oard joints shall be offset from sheathingboard joints.13.5.2 When the boards are attached only with mechanicalfasteners, they shall be affixed to a nailable substrate orstructural members with the proper fasteners, ensuring that allboards abut tightly. Fastening pattern shall be in accordancewith t
45、he EIFS producers recommendation and local buildingcode requirements. When installed, the washer shall be leftflush with the face of the insulation board and shall not fracturethe face or core of insulation board.14. Aesthetic Reveals14.1 Aesthetic reveals shall be cut into the insulation boardprior
46、 to applying the reinforcing mesh.14.2 The insulation board thickness at the bottom of a revealshall be not less than34 in. (19.0 mm). Over open framing,aesthetic reveals shall occur over framing or blocking.14.3 Aesthetic reveals shall be cut true and straight.14.4 Horizontal aesthetic reveal confi
47、guration shall providefor outward positive drainage.14.5 Aesthetic reveals shall not occur at the abutment of twopieces of insulation board.14.6 The reveal shall be reinforced with base coat andreinforcing mesh prior to application of the full base coat andreinforcing mesh.15. Reinforced Base Coat A
48、pplication15.1 Inspect the insulation board surface to ensure that it isclean, dry, free of all foreign materials, and damage of anytype. Insulation board planar irregularities of more than116 in.(1.6 mm) shall be corrected. All board joints shall be tightlyabutted or shall be filled with an insulat
49、ing material.15.2 Base Coat PreparationAll materials requiring fieldpreparation shall be mixed in accordance with the EIFSproducers specifications.15.3 Base Coat ApplicationThe prepared base coat shallbe uniformly spread over the entire surface of the insulationboard.15.4 Non Metallic Reinforcing MeshThe single layerreinforcing mesh shall be fully encapsulated in the field of thewall, at corners, edges, and joints. Trowel from the center to theedge of the reinforcing mesh to avoid wrinkles. The singlelayer reinforcing mesh shall be continuous at all
