[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-663810-105":3,"detail-sidebar-cat-0-en-105":79,"doc-detail-663810-en":129},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":72,"head_meta":74,"extra_data":76,"updated_unix":78},105,"en","window-details-for-stucco-overview-aama-performance-class","WINDOW DETAILS FOR STUCCO - Overview - AAMA Performance Class","","Overview of how to detail stucco window openings, focusing on window sill, jamb, and head conditions that vary by window style (flanged vs non-flanged), structural context, and window performance requirements set through AAMA Performance Class. Explains design pressure, the need for Design Pressure and Performance Grade ratings for structural integrity and water resistance, sealant joint sizing and tooling, and how leaking windows nullify flashing benefits. Provides AAMA grade examples and multiple SMA/NWCB detailing notes.",{"@graph":14,"@context":71},[15,34,54],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/technology/","Technology",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/window-details-for-stucco-overview-aama-performance-class/663810/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":48,"encodingFormat":47,"isAccessibleForFree":49,"interactionStatistic":50},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/window-details-for-stucco-overview-aama-performance-class/663810.png","ImageObject",300,407,{"name":42,"@type":43},"Supernature","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-29",true,{"@type":51,"interactionType":52,"userInteractionCount":33},"InteractionCounter",{"@type":53},"ViewAction",{"@type":55,"mainEntity":56},"FAQPage",[57,63,67],{"name":58,"@type":59,"acceptedAnswer":60},"What factors determine how stucco window sills, jambs, and heads should be detailed?","Question",{"text":61,"@type":62},"Detailing varies by window type/style (flanged vs non-flanged), structural form and location, and the window’s AAMA performance class requirements for the opening.","Answer",{"name":64,"@type":59,"acceptedAnswer":65},"What does the document say about design pressure and performance ratings for windows?",{"text":66,"@type":62},"Three-coat stucco properly applied meets the AW performance class when windows are selected to meet or exceed the AAMA-established performance class. The document also emphasizes that windows require design pressure and performance grade ratings for structural integrity and water resistance.",{"name":68,"@type":59,"acceptedAnswer":69},"How should the sealant joint be sized and tooled for stucco window openings?",{"text":70,"@type":62},"The sealant joint width should not be less than 1/4 inch and not exceed 3/4 inch, with the depth at 1/2 of the width. The joint should be tooled into an hourglass shape to improve flexibility.","https://schema.org",{"og:url":32,"og:type":73,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":75,"canonical":32},"index,follow",{"doc_id":77,"site_id":7},663810,1793232240,{"code":4,"msg":80,"data":81},"success",[82,86,90,94,99,103,108,113,118,121,125],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":83,"show_sort_weight":84,"slug":85},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":87,"show_sort_weight":88,"slug":89},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":91,"show_sort_weight":92,"slug":93},"Exam",70,"exam",{"id":95,"doc_module":4,"doc_module_name":25,"category_name":96,"show_sort_weight":97,"slug":98},5,"Comic",60,"comic",{"id":100,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":101,"slug":102},6,50,"technology",{"id":104,"doc_module":4,"doc_module_name":25,"category_name":105,"show_sort_weight":106,"slug":107},7,"Healthcare",40,"healthcare",{"id":109,"doc_module":4,"doc_module_name":25,"category_name":110,"show_sort_weight":111,"slug":112},8,"Research & Report",30,"research-report",{"id":114,"doc_module":4,"doc_module_name":25,"category_name":115,"show_sort_weight":116,"slug":117},9,"Religion & Spirituality",20,"religion-spirituality",{"id":116,"doc_module":4,"doc_module_name":25,"category_name":119,"show_sort_weight":116,"slug":120},"World Cup","world-cup",{"id":122,"doc_module":4,"doc_module_name":25,"category_name":123,"show_sort_weight":122,"slug":124},10,"Lifestyle","lifestyle",{"id":126,"doc_module":4,"doc_module_name":25,"category_name":127,"show_sort_weight":95,"slug":128},19,"General","general",{"code":4,"msg":80,"data":130},{"doc_id":77,"user_id":131,"nickname":42,"user_avatar":132,"doc_module":4,"category_id":100,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":133,"file_id":134,"file_url":135,"file_type":136,"file_size":137,"view_count":33,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":138,"language":139,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":12,"update_tm":78,"read_time":143},962093270004,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","WINDOW DETAILS FOR STUCCO  \nTechTimes  \n2020  \nOVERVIEW: Windows are used in all claddings, how to detail the window sill, jamb and head for stucco will vary based on the following factors:  \n• The type or style of window. There are basically flanged and non-flanged style windows.  \n• Consider structure and its location. For example, a concrete high-rise in Miami will require more attention than a single story home in Arizona.  \n• Consider the window itself. Windows perform differantly, this is typically expressed as a Performance Class (PC) through AAMA (American Architectural Manufcaturers Association)  \nThis SMA collection of various window details are not meant for any specific project. They are only to assist designers on options/concepts. They are also not meant to limit optional or alternative options. The designer of record shall approve and should consider the three bullet points when selecting or creating a new window detail. The window and stucco manufacturer may have specific requirements and these will supersede SMA recommendations.  \nDESIGN PRESSURE: Three-coat stucco, properly applied, meets the AW Performance class . Windows must be selected to meet or exceed the Performance Class (PC) established by AAMA for the opening. This will include a Design Pressure (DP) and Performance Grade (PG) rating for structural integraity and water resistance. If the window leaks, the best flashing in the world becomes a moot point. Most windows will require a casing bead with a functional sealant joint. Refer to SMA Technical Bulletin “Flashing a Nail Flange Style Window for Stucco” for conditions that may allow stucco to directly abut a window frame.  \nThe sealant joint width (A) should not be less than ¼ inch wide or exceed ¾ inch. The joint should be tooled to be hour glass shaped, this allows moreflexibilty. The depth should be ½ of the width. This size joint, using approved materials, is acceptable formost structures across all regions of the country.  \nAAMA PERFORMANCE GRADES/CLASS  \n• 15 psf for R class (commonly used in one-and two-family dwellings) 25 psf for LC class (commonly used for low-and mid-rise multifamily dwellings and other buildings where larger sizesand higher loading requirements are expected)  \n• 30 psf for the new CW class (commonly used in low-and mid-rise buildings where larger sizes, higher loading requirements, limits on deflection and heavier use are expected)  \n• 40 psf for the AW class (commonly used in high-rise and mid-rise buildings to meet increased loading requirements and limits on deflection and in buildings where frequent and extreme use of the fenestration products is expected)  \nSTUCCO: Portland cement plaster (stucco) installed per SMA, ASTM,Code and manufcaturers requirments meets AW class design pressures. In the event of conflicts, manufacturers requirements prevail.  \nDetails Courtesy of the Northwest Wall & Ceiling Bureau  \nSMA NOTE: Stucco may directly abut the window frame if the conditions of SMA Technical Bulletin“Flashing a Nail Flange Style Window For Stucco” have been met. Details courtesy of the Northwest Wall & Ceiling Bureau.  \nDetails Courtesy of the Northwest Wall & Ceiling Bureau  \nSMA NOTE: Head Flashing Membrane may be placed over the Head Flashing (Metal or PVC)  \nNWCB Detail  \nSMA NOTE: A sheet metal sill pan is recommended for all Storefront style windows, particularly when the window is set-back. Stucco may terminate under the lip of the sill pan when set in a bed of sealant. For a sloped stucco sill in to window refer to page 13.  \nNWCB Detail  \nSMA NOTE: This detail is acceptable for metal and PVC style windows on CMU or concrete. Lath isnot required for cement plaster on CMU.  \nSMA NOTE: This is a basic stucco detailing method for all non-flanged style windows. Head flashing is not always required and a sealant joint is acceptable in low and mid rise structures in Dry zones (B) per the 2015 IECC climate zone map C 301.1. Moist (A) and Marine (C) should have h","cbCaif9BwcHVzRH9","https://ap.wps.com/l/cbCaif9BwcHVzRH9","pdf",1462689,14,"English","# Overview\n## Design Pressure\n## AAMA Performance Grades/Class\n## Stucco and Detailing Notes","[{\"question\":\"What factors determine how stucco window sills, jambs, and heads should be detailed?\",\"answer\":\"Detailing varies by window type/style (flanged vs non-flanged), structural form and location, and the window’s AAMA performance class requirements for the opening.\"},{\"question\":\"What does the document say about design pressure and performance ratings for windows?\",\"answer\":\"Three-coat stucco properly applied meets the AW performance class when windows are selected to meet or exceed the AAMA-established performance class. The document also emphasizes that windows require design pressure and performance grade ratings for structural integrity and water resistance.\"},{\"question\":\"How should the sealant joint be sized and tooled for stucco window openings?\",\"answer\":\"The sealant joint width should not be less than 1/4 inch and not exceed 3/4 inch, with the depth at 1/2 of the width. The joint should be tooled into an hourglass shape to improve flexibility.\"}]","WINDOW DETAILS FOR STUCCO - Overview - AAMA Performance Class | PDF",35]