[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-402177-105":59,"doc-detail-402177-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","surface-preparation-guide-surface-preparation","Surface Preparation Guide - Surface Preparation","","Surface preparation determines coating adhesion, integrity, and long-term service life. Improper preparation can reduce performance and contributes to the majority of coating failures by weakening bonding. The guide explains how to select preparation methods based on substrate type, environment, chosen coating system, and expected service conditions, including economic and contamination factors. It then details requirements for previously coated surfaces, maintenance painting constraints, cleaning and dulling steps, spot priming, compatibility testing using ASTM D3359, and repair scheduling practices.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":35,"@type":76,"position":81},"https://docshare.wps.com/document/healthcare/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/surface-preparation-guide-surface-preparation/402177/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/surface-preparation-guide-surface-preparation/402177.png","ImageObject",300,407,{"name":92,"@type":93},"A glass of water","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-29","2026-09-27",true,{"@type":102,"interactionType":103,"userInteractionCount":39},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"Why does surface preparation affect coating performance and service life?","Question",{"text":112,"@type":113},"Coating integrity and service life depend on proper surface preparation. Inadequate preparation reduces adhesion and can directly cause coating failures.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What must be removed or treated before repainting previously coated surfaces?",{"text":117,"@type":113},"All surface contamination such as oil, grease, loose paint, mill scale, dirt, rust, mold, mildew, and efflorescence must be removed. Glossy films must be cleaned and made dull before repainting.",{"name":119,"@type":110,"acceptedAnswer":120},"How can compatibility be checked when complete removal of old coatings is not feasible?",{"text":121,"@type":113},"Apply a test patch of the recommended coating system, covering at least 2 to 3 square feet. Allow it to dry one week, then test adhesion per ASTM D3359; if incompatible, complete removal is required.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},402177,1790693850,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":34,"category_name":35,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":39,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":19,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":143,"read_time":52,"preview_page_count":4},962090760832,"https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d","SURFACE PREPARATION GUIDE  \nSurface Preparation  \nCoating performance is directly affected by surface preparation. Coating integrity and service life will be reduced because of improperly prepared surfaces. As high as 80% of all coating failures can be directly attributed to inadequate surface preparation that affects coating adhesion. Selection and implementation of the proper surface preparation ensures coating adhesion to the substrate and prolongs the service life of the coating system. The majority of paintable surfaces are concrete, ferrous metal, galvanizing and aluminum. They all require protection to keep them from corroding in aggressive environments. Selection of the proper method for surface preparation depends on the substrate, the environment, the coating selected and the expected service life of the coating system. Economics, surface contamination and the environment will also influence the selection of surface preparation methods.  \nPreviously Coated Surfaces  \nMaintenance painting will frequently not permit or require complete removal of all old coatings prior to repainting. However, all surface contamination such as oil, grease, loose paint, mill scale, dirt, foreign matter, rust, mold, mildew, mortar, efflorescenceand sealers must be removed to assure sound bonding to the tightly adhering old paint. Glossy surfaces of old paint films must be clean and dull before repainting. Washing with an abrasive cleanser will clean and dull in one operation, or, wash thoroughly and dull by sanding. Spot prime any bare areas with an appropriate primer. Recognize that any surface preparation short of total removal of the old coating may compromise the service life of the system. Check for compatibility by applying a test patch of the recommended coating system, covering at least 2 to 3 square feet. Allow to dry one week before testing adhesion per ASTM D3359 . If the coating system is incompatible, complete removal is required.  \nTouch-Up, Maintenance and Repair  \nFor a protective coating system to provide maximum long-term protection, regularly scheduled maintenance is required. Maintenance includes inspection of painted areas, cleaning of surfaces to remove oils, chemicals, and other contaminants, and touch-up of areas where the coatings have been damaged. Highly corrosive areas, such as those subjected to frequent chemical spillage, corrosive fumes and/or high abrasion or temperature, should be inspected frequently – every six months, for example. Areas exposed to less severe conditions, such as interiors and exteriors of potable water tanks, may be inspected annually to assess the condition of the coating system.  \nThe SSPC-VIS 2, Standard Method for Evaluating Degree of Rusting on Painted Steel Surfaces, can be used as a guide to determine appropriate touch-up and repair maintenance schedules.  \nNon-Ferrous Metal Surfacesand Concrete  \nAluminum  \nRemove all oil, grease, dirt, oxide and other foreign material by cleaning per SSPC-SP1, Solvent Cleaning or SSPC-SP 16.  \nGalvanized Metal  \nAllow to weather a minimum of six months prior to coating. Clean per  \nSSPC-SP1 using detergent and water or a degreasing cleaner, then prime as required. When weathering is not possible or the surface has been treated with chromates or silicates, first Solvent Clean per SSPC-SP1 and apply a test area, priming as required. Allow the coating to cure at least one week before testing per ASTM D3359 . If adhesion is poor, Brush Blast per SSPC-SP 16 is necessary to remove these treatments.  \nDuctile Iron  \nNational Association of Pipe Fabricators, [Inc. www.napf.com](Inc. www.napf.com)  \nNAPF 500-03 Surface Preparation Standard for Ductile Iron Pipe and Fittingsin Exposed Locations Receiving Special External Coatings and/or Special Internal Linings  \nThis standard summarizes the surface preparation requirements for ductile iron. Included within this standard are the following:  \nNAPF 500-03-01  \nNAPF 500-03-02  \nNAPF 500-03-03  \nNAPF 500-03-","cbCain24a6Szy60a","https://ap.wps.com/l/cbCain24a6Szy60a","pdf",10828020,"English","# Surface Preparation\n## Previously Coated Surfaces\n## Touch-Up, Maintenance and Repair\n## Non-Ferrous Metal Surfaces and Concrete\n## SSPC/NACE Standards\n### Solvent Cleaning\n### Hand Tool Cleaning","[{\"question\":\"Why does surface preparation affect coating performance and service life?\",\"answer\":\"Coating integrity and service life depend on proper surface preparation. Inadequate preparation reduces adhesion and can directly cause coating failures.\"},{\"question\":\"What must be removed or treated before repainting previously coated surfaces?\",\"answer\":\"All surface contamination such as oil, grease, loose paint, mill scale, dirt, rust, mold, mildew, and efflorescence must be removed. Glossy films must be cleaned and made dull before repainting.\"},{\"question\":\"How can compatibility be checked when complete removal of old coatings is not feasible?\",\"answer\":\"Apply a test patch of the recommended coating system, covering at least 2 to 3 square feet. Allow it to dry one week, then test adhesion per ASTM D3359; if incompatible, complete removal is required.\"}]","Surface Preparation Guide - Surface Preparation | PDF",1790527719]