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It addresses typical design and construction problems, with a strong focus on fire safety given the vulnerability of thatched roofs. The guide outlines practical fire-safety principles developed through research, plus recommended specifications for typical thatch roof construction and for thatched lapas.",{"@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":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/a-guide-to-good-thatching-practice-introduction/663049/",{"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/a-guide-to-good-thatching-practice-introduction/663049.png","ImageObject",300,407,{"name":92,"@type":93},"Blitz","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-28",true,{"@type":102,"interactionType":103,"userInteractionCount":19},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the scope of this guide on thatching?","Question",{"text":112,"@type":113},"It describes basic roof thatching techniques, identifies common problems in design and construction, and provides guidelines for good thatching practice. It also includes practical fire-safety design principles and typical specification guidance in the appendices.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"Which materials are used for thatching according to the guide?",{"text":117,"@type":113},"Thatching uses naturally obtainable grass or reed, and in South Africa only certain indigenous grasses are normally used.",{"name":119,"@type":110,"acceptedAnswer":120},"Why does the guide emphasize fire safety for thatched roofs?",{"text":121,"@type":113},"The most significant drawback of a thatched roof is vulnerability in the event of fire. The guide therefore reports fire-safety design principles developed after years of research.","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},663049,1793224809,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":19,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":129,"read_time":144},24464137899374,"https://us-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","THATCH GUIDE:  \nPUBLISHED BY THE DIVISION OF BUILDING AND CONSTRUCTION TECHNOLOGY CSIR, PO BOX 395, PRETORIA, 0001 COPYRIGHT VESTS IN THE CSIR  \n© 1998, CSIR, PRETORIA  \nBOUTEK REPORT NO BOU/E9806  \nDESIGN AND LAYOUT BY AFRICAN WATERMARK GRAPHIC DESIGN, PRETORIA  \nA GUIDE  \nTO GOOD THATCHING PRACTICE  \nINDEX   \n1. Introduction 12.3 The regulatory environment  \n2. Materials 13. Acknowledgements  \n2.1 Common thatching grass 14. References  \n2.2 Cape thatching reed  \n3. Preparation Appendix A: Guidelines for a typical  \n3.1 Cleaning and bundling thatch roof specification  \n3.2 Combing  \n3.3 Storing A1 . Roof structure  \n4. The thatcher’s tools A1 .1 General  \n4.1 A sickle A1 .2 Construction  \n4.2 The thatching spade or A1.3 Structural timber or poles“dekspaan” A1.4 Structural fixings  \n4.3 A straight needle A1.5 Laths  \n4.4 A curved needle A2 . Ridges  \n4.5 Climbing hooks A3 . Poles and structural timber  \n5. Workmanship A3.1 Treatment of timber  \n5.1 The thatching team A4 . Finishing of poles  \n5.2 Thatching A5 . Thatch  \n5.3 Sways A5.1 Thatching grass  \n5.4 Spray layer A5.2 Spray layer  \n5.5 Chimney stacks A5.3 Laying of thatch  \n5.6 Hips A5.4 Fixing  \n5.7 Valleys A6 . Fire-retardant thatch treatment  \n5.8 Verges A6.1 Fire-retardant coating  \n5.9 Ridges A7 . Chimneys  \n5. 10 Use of conductors A8 . Services  \n6. Characteristics of thatch  \n6.1 Advantages Appendix B: Rational fire safety design  \n6.2 Disadvantages guidelines for thatched lapas  \n7. Rainwater disposal  \n8. Thatch decay B1 . General  \n9. Maintenance B2 . Thatch roofs covering a roof plan  \n10. Design area of less than 20 m2  \n10.1 Roof structure B3 . Thatch roofs covering a roof plan  \n10.2 Timber foundation area of more than 20 m2 supports B3.1 SABS 0400 Part T  \n10.3 Effects of wind on thatch B3.2 National Building Regulations T1 roofing sub paragraph (2)  \n11. Lightning protection B3.3 Rational design criteria  \n12. Fire safety of thatched  \nroofs  \n12.1 Design and construction  \n12.2 Fire protection forthatched structures  \n1 . INTRODUCTION   \nThatch has been used as a roof cladding material for many centuries. It creates an aesthetically pleasing end result, well adapted to the natural environment, and its popularity has not diminished over time. Thatching is a craft traditionally handed down from father to son; consequently relatively little documented information exists. It is to this end that this guide is presented in an  \nendeavour to report concisely on the present status of technology related to good thatching practice.  \nScope  \nThis guide describes the basic techniques employed in roof thatching. It identifies certain problems that are commonly encountered in both design and construction and offers guidelines for good thatching practice. The most significant drawback of a thatched roof is its vulnerability in the event of fire. Practical fire-safety design principles, developed after years of research, are consequently briefly reported on in this document. Guidelines for a typical thatch roof specification are included in Appendix A.  \nThe construction of thatched lapas has also become an area of major concern, not only for most local authorities, but also for insurance brokers. Since no guidelines are given for the construction of thatched structures in SABS 0400:1990 (Code of practice for the application of the National Building Regulations) , guidance will also be given in this regard. Guidelines for the fire-safe design of thatched lapas are provided in Appendix B.  \n 2 . MATERIALS   \nThatching makes use of materials that are naturally obtainable, i.e. grass or reed. In South Africa, only certain indigenous grasses are normally used. Detailed information with regard to all the grass species can be found in Frits van  \nOudtshoorn’s book, Gids tot Grasse van Suid Afrika (1991) .  \n12.1 Common thatching grass  \nThe most commonly used South African grasses with their main geographical locations are listed below:  \n• Hyparrhenia hirta (generally known ","cbCaiqm3ANif03Sz","https://ap.wps.com/l/cbCaiqm3ANif03Sz","pdf",3804226,38,"English","# Introduction\n## Scope\n# Materials\n## Common thatching grass\n# Preparation\n## Cleaning and bundling thatch\n# Tools\n## The thatcher’s tools","[{\"question\":\"What is the scope of this guide on thatching?\",\"answer\":\"It describes basic roof thatching techniques, identifies common problems in design and construction, and provides guidelines for good thatching practice. It also includes practical fire-safety design principles and typical specification guidance in the appendices.\"},{\"question\":\"Which materials are used for thatching according to the guide?\",\"answer\":\"Thatching uses naturally obtainable grass or reed, and in South Africa only certain indigenous grasses are normally used.\"},{\"question\":\"Why does the guide emphasize fire safety for thatched roofs?\",\"answer\":\"The most significant drawback of a thatched roof is vulnerability in the event of fire. The guide therefore reports fire-safety design principles developed after years of research.\"}]","A Guide to Good Thatching Practice - Introduction | PDF",96]