{"id":745,"date":"2017-02-09T15:57:26","date_gmt":"2017-02-09T13:57:26","guid":{"rendered":"http:\/\/test2.hashtagwebsite.design\/?post_type=product&p=745"},"modified":"2025-09-26T11:34:30","modified_gmt":"2025-09-26T09:34:30","slug":"joluka-cardboard-void-formers","status":"publish","type":"product","link":"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/","title":{"rendered":"Joluka Cardboard Void Formers"},"content":{"rendered":"

IDEAL FOR BASEMENTS IN HEAVING SOIL AND SIMILAR APPLICATIONS.
\nConsists of a special corrugated cardboard box, wax coated on the outside to withstand temporary moisture of concrete when casting. Depending on the slab thickness special stiffeners are placed inside Void Formers.
\nIn contact with moisture or water the JOLUKA VOID FORMERS<\/strong> slowly disintegrate leaving a Void for soil movement.<\/p>\n

Advantages:<\/strong>
\n\u2022 Light weight.
\n\u2022 Easy to position.
\n\u2022 Saves up to 50% of time.
\n\u2022 Cost effective compared to conventional methods.
\n\u2022 Can be used for beams, slabs, flat surfaces, etc.
\n\u2022 Different sizes, thicknesses and shapes can be manufactured as per engineers’ specifications.<\/p>\n

Placement of Joluka Void Formers:<\/strong>
\n1. After excavation, a layer of approx. 20mm riversand or similar should be placed on surface.
\n2. A thin plastic sheeting must be placed beneath Joluka Void Former.
\n3. Shortly prior to fixing reinforcing the JOLUKA VOID FORMER must be positioned as specified by engineer.
\n4. A thin plastic sheeting must be placed around the JOLUKA VOID FORMER eliminating contact with moisture and water.
\n5. After fixing steel etc. the concrete is poured.
\n6. JOLUKA VOID FORMERS do not need to be removed since the collapse and disintegrate with time, depending on the amount of moisture received from surrounding concrete and underlying soil.
\n7. Heaving soil (like clay) may now expand into cavities provided by the disintegrated JOLUKA VOID FORMERS.<\/p>\n

Special instructions:<\/strong>
\nDue to the inherent property of the cardboard to collapse and disintegrate in contact with moisture it is important to:
\n1. Store the Void Formers indoors and to eliminate contact with water as well as moisture.
\n2. In the case of no indoor storage facility, the JOLUKA VOID FORMERS must be completely covered with plastic sheeting to avoid contact with water.
\n3. Ensure to pour concrete as soon as possible after positioning JOLUKA VOID FORMERS.<\/p>\n

Other sizes and shapes of JOLUKA VOID FORMERS can be supplied on request.
\nTypical Heights of JOLUKA VOID FORMERS for flat surfaces used in heaving soil are between 100-250mm.<\/p>\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

IDEAL FOR BASEMENTS IN HEAVING SOIL AND SIMILAR APPLICATIONS.
\nConsists of a special corrugated cardboard box, wax coated on the outside to withstand temporary moisture of concrete when casting. Depending on the slab thickness special stiffeners are placed inside Void Formers.
\nIn contact with moisture or water the JOLUKA VOID FORMERS<\/strong> slowly disintegrate leaving a Void for soil movement.<\/p>\n

Advantages:<\/strong>
\n\u2022 Light weight.
\n\u2022 Easy to position.
\n\u2022 Saves up to 50% of time.
\n\u2022 Cost effective compared to conventional methods.
\n\u2022 Can be used for beams, slabs, flat surfaces, etc.
\n\u2022 Different sizes, thicknesses and shapes can be manufactured as per engineers’ specifications.<\/p>\n","protected":false},"featured_media":3887,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"_joinchat":[]},"product_brand":[],"product_cat":[993,985],"product_tag":[111,453],"class_list":["post-745","product","type-product","status-publish","has-post-thumbnail","product_cat-other","product_cat-void-formers","product_tag-other-accessories","product_tag-void-formers","first","onbackorder","taxable","shipping-taxable","purchasable","product-type-variable","has-default-attributes"],"yoast_head":"\nJoluka Cardboard Void Formers - Joluka Manufacturing<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Joluka Cardboard Void Formers - Joluka Manufacturing\" \/>\n<meta property=\"og:description\" content=\"IDEAL FOR BASEMENTS IN HEAVING SOIL AND SIMILAR APPLICATIONS. Consists of a special corrugated cardboard box, wax coated on the outside to withstand temporary moisture of concrete when casting. Depending on the slab thickness special stiffeners are placed inside Void Formers. In contact with moisture or water the JOLUKA VOID FORMERS slowly disintegrate leaving a Void for soil movement. Advantages: \u2022 Light weight. \u2022 Easy to position. \u2022 Saves up to 50% of time. \u2022 Cost effective compared to conventional methods. \u2022 Can be used for beams, slabs, flat surfaces, etc. \u2022 Different sizes, thicknesses and shapes can be manufactured as per engineers' specifications.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/\" \/>\n<meta property=\"og:site_name\" content=\"Joluka Manufacturing\" \/>\n<meta property=\"article:modified_time\" content=\"2025-09-26T09:34:30+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.joluka.co.za\/construction\/wp-content\/uploads\/2017\/02\/JOLUKA-CARDBOARD-VOID-FORMER-L-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"763\" \/>\n\t<meta property=\"og:image:height\" content=\"763\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/\",\"url\":\"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/\",\"name\":\"Joluka Cardboard Void Formers - Joluka Manufacturing\",\"isPartOf\":{\"@id\":\"https:\/\/www.joluka.co.za\/construction\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.joluka.co.za\/construction\/wp-content\/uploads\/2017\/02\/JOLUKA-CARDBOARD-VOID-FORMER-L-1.jpg\",\"datePublished\":\"2017-02-09T13:57:26+00:00\",\"dateModified\":\"2025-09-26T09:34:30+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/#primaryimage\",\"url\":\"https:\/\/www.joluka.co.za\/construction\/wp-content\/uploads\/2017\/02\/JOLUKA-CARDBOARD-VOID-FORMER-L-1.jpg\",\"contentUrl\":\"https:\/\/www.joluka.co.za\/construction\/wp-content\/uploads\/2017\/02\/JOLUKA-CARDBOARD-VOID-FORMER-L-1.jpg\",\"width\":763,\"height\":763,\"caption\":\"Joluka Cardboard Void Former\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.joluka.co.za\/construction\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Shop\",\"item\":\"https:\/\/www.joluka.co.za\/construction\/shop\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Joluka Cardboard Void Formers\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.joluka.co.za\/construction\/#website\",\"url\":\"https:\/\/www.joluka.co.za\/construction\/\",\"name\":\"Joluka Manufacturing\",\"description\":\"MANUFACTURERS OF SYSTEMS FOR REINFORCED CONCRETE AND BRICK STRUCTURES SINCE 1982\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.joluka.co.za\/construction\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Joluka Cardboard Void Formers - Joluka Manufacturing","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/","og_locale":"en_US","og_type":"article","og_title":"Joluka Cardboard Void Formers - Joluka Manufacturing","og_description":"IDEAL FOR BASEMENTS IN HEAVING SOIL AND SIMILAR APPLICATIONS. Consists of a special corrugated cardboard box, wax coated on the outside to withstand temporary moisture of concrete when casting. Depending on the slab thickness special stiffeners are placed inside Void Formers. In contact with moisture or water the JOLUKA VOID FORMERS slowly disintegrate leaving a Void for soil movement. Advantages: \u2022 Light weight. \u2022 Easy to position. \u2022 Saves up to 50% of time. \u2022 Cost effective compared to conventional methods. \u2022 Can be used for beams, slabs, flat surfaces, etc. \u2022 Different sizes, thicknesses and shapes can be manufactured as per engineers' specifications.","og_url":"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/","og_site_name":"Joluka Manufacturing","article_modified_time":"2025-09-26T09:34:30+00:00","og_image":[{"width":763,"height":763,"url":"https:\/\/www.joluka.co.za\/construction\/wp-content\/uploads\/2017\/02\/JOLUKA-CARDBOARD-VOID-FORMER-L-1.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/","url":"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/","name":"Joluka Cardboard Void Formers - Joluka Manufacturing","isPartOf":{"@id":"https:\/\/www.joluka.co.za\/construction\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/#primaryimage"},"image":{"@id":"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/#primaryimage"},"thumbnailUrl":"https:\/\/www.joluka.co.za\/construction\/wp-content\/uploads\/2017\/02\/JOLUKA-CARDBOARD-VOID-FORMER-L-1.jpg","datePublished":"2017-02-09T13:57:26+00:00","dateModified":"2025-09-26T09:34:30+00:00","breadcrumb":{"@id":"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/#primaryimage","url":"https:\/\/www.joluka.co.za\/construction\/wp-content\/uploads\/2017\/02\/JOLUKA-CARDBOARD-VOID-FORMER-L-1.jpg","contentUrl":"https:\/\/www.joluka.co.za\/construction\/wp-content\/uploads\/2017\/02\/JOLUKA-CARDBOARD-VOID-FORMER-L-1.jpg","width":763,"height":763,"caption":"Joluka Cardboard Void Former"},{"@type":"BreadcrumbList","@id":"https:\/\/www.joluka.co.za\/construction\/shop\/other\/void-formers\/joluka-cardboard-void-formers\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.joluka.co.za\/construction\/"},{"@type":"ListItem","position":2,"name":"Shop","item":"https:\/\/www.joluka.co.za\/construction\/shop\/"},{"@type":"ListItem","position":3,"name":"Joluka Cardboard Void Formers"}]},{"@type":"WebSite","@id":"https:\/\/www.joluka.co.za\/construction\/#website","url":"https:\/\/www.joluka.co.za\/construction\/","name":"Joluka Manufacturing","description":"MANUFACTURERS OF SYSTEMS FOR REINFORCED CONCRETE AND BRICK STRUCTURES SINCE 1982","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.joluka.co.za\/construction\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.joluka.co.za\/construction\/wp-json\/wp\/v2\/product\/745","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.joluka.co.za\/construction\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.joluka.co.za\/construction\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.joluka.co.za\/construction\/wp-json\/wp\/v2\/comments?post=745"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.joluka.co.za\/construction\/wp-json\/wp\/v2\/media\/3887"}],"wp:attachment":[{"href":"https:\/\/www.joluka.co.za\/construction\/wp-json\/wp\/v2\/media?parent=745"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.joluka.co.za\/construction\/wp-json\/wp\/v2\/product_brand?post=745"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.joluka.co.za\/construction\/wp-json\/wp\/v2\/product_cat?post=745"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.joluka.co.za\/construction\/wp-json\/wp\/v2\/product_tag?post=745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}