{"product_id":"postfix-rapid-setting-post-concrete-20kg","title":"Postfix Rapid Setting Post Concrete, 20kg Bag, 5 to 10 Minute Initial Set","description":"\u003cp\u003ePostfix is the quickest way to set a post solid in the ground without mixing concrete. Pour it dry into the hole, add water, and the post is held within minutes. This rapid setting post fixing concrete comes in 20kg waterproof plastic bags. It is factory blended to give a high quality concrete, with an initial set of 5 to 10 minutes depending on conditions. The supplier states a typical compressive strength of more than 20N\/mm² at 28 days. Fencers, landscapers, builders and homeowners use it for timber, concrete, metal and plastic fence posts, gate posts, washing line poles, rotary dryers, bird tables and play equipment.\u003c\/p\u003e\n\n\u003ch2\u003eWhy it works\u003c\/h2\u003e\n\n\u003ch3\u003eNo mixing\u003c\/h3\u003e\n\u003cp\u003eBecause the concrete is factory blended, there is no measuring of sand, gravel and cement and no mixer to clean. It goes from the bag straight into the hole, which saves time on every post.\u003c\/p\u003e\n\n\u003ch3\u003eRapid setting\u003c\/h3\u003e\n\u003cp\u003eThe initial set is 5 to 10 minutes, depending on conditions. The post can be let go quickly instead of being propped for hours, so you can move straight on to the next hole.\u003c\/p\u003e\n\n\u003ch3\u003eStrong enough for fencing and gates\u003c\/h3\u003e\n\u003cp\u003eA typical compressive strength of more than 20N\/mm² at 28 days is plenty for fence posts, gate posts and garden structures.\u003c\/p\u003e\n\n\u003ch3\u003eCleaner than wet concrete\u003c\/h3\u003e\n\u003cp\u003ePouring dry from the bag keeps the work tidy around patios, lawns and borders. There are no barrows of wet mix to wheel across the garden and no mixing board to clean, which matters on small jobs where only a few posts are being set.\u003c\/p\u003e\n\n\u003ch3\u003eWaterproof bags\u003c\/h3\u003e\n\u003cp\u003eThe bags are waterproof plastic rather than paper, so they can be stored outside or on site without turning to stone in the rain.\u003c\/p\u003e\n\n\u003ch2\u003eWhere it's used\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTimber, concrete, metal and plastic fence posts\u003c\/li\u003e\n\u003cli\u003eGate posts and fence support posts\u003c\/li\u003e\n\u003cli\u003eWashing line poles and rotary dryers\u003c\/li\u003e\n\u003cli\u003eBird tables and children's play equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eRapid setting post fixing concrete\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBag weight\u003c\/td\u003e\n\u003ctd\u003e20kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInitial set\u003c\/td\u003e\n\u003ctd\u003e5 to 10 minutes, depending on conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical compressive strength\u003c\/td\u003e\n\u003ctd\u003eMore than 20N\/mm² at 28 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlend\u003c\/td\u003e\n\u003ctd\u003eFactory blended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackaging\u003c\/td\u003e\n\u003ctd\u003eWaterproof plastic bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstructions\u003c\/td\u003e\n\u003ctd\u003eOn the reverse of the bag\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eChoosing the right option\u003c\/h2\u003e\n\u003cp\u003eThis listing is a single 20kg bag. The choice is how many bags you need, which depends on the post size and hole size. The supplier's guide includes:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePost\u003c\/th\u003e\n\u003cth\u003eHole (width x depth)\u003c\/th\u003e\n\u003cth\u003eBags per post\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e50mm round\u003c\/td\u003e\n\u003ctd\u003e150mm x 450mm\u003c\/td\u003e\n\u003ctd\u003e0.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e50mm round\u003c\/td\u003e\n\u003ctd\u003e200mm x 600mm\u003c\/td\u003e\n\u003ctd\u003e1.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e75mm square\u003c\/td\u003e\n\u003ctd\u003e200mm x 600mm\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e75mm square\u003c\/td\u003e\n\u003ctd\u003e300mm x 600mm\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100mm square\u003c\/td\u003e\n\u003ctd\u003e200mm x 600mm\u003c\/td\u003e\n\u003ctd\u003e0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100mm square\u003c\/td\u003e\n\u003ctd\u003e300mm x 600mm\u003c\/td\u003e\n\u003ctd\u003e2.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eMultiply the bags per post by the number of posts and round up. Gate posts usually need a larger hole than fence posts.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation, use \u0026amp; care\u003c\/h2\u003e\n\u003cp\u003eFollow the instructions on the reverse of the bag. Dig the hole, stand the post in it and hold it plumb with a spirit level. Pour the dry postfix around the post and add water as directed. Keep the post upright until the initial set, 5 to 10 minutes depending on conditions. Wait for the concrete to harden fully before hanging gates or loading the post.\u003c\/p\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eDo I need to mix it?\u003c\/h3\u003e\n\u003cp\u003eNo. It is factory blended. Follow the instructions on the reverse of the bag.\u003c\/p\u003e\n\u003ch3\u003eHow fast does it set?\u003c\/h3\u003e\n\u003cp\u003eThe initial set is 5 to 10 minutes, depending on conditions.\u003c\/p\u003e\n\u003ch3\u003eHow many bags per post?\u003c\/h3\u003e\n\u003cp\u003eIt depends on post and hole size. A 100mm post in a 200mm x 600mm hole needs about 0.75 of a bag.\u003c\/p\u003e\n\u003ch3\u003eWhat can I set with it?\u003c\/h3\u003e\n\u003cp\u003eTimber, concrete, metal and plastic posts, gate posts, washing line poles, rotary dryers, bird tables and play equipment.\u003c\/p\u003e\n\u003ch3\u003eCan I store it outside?\u003c\/h3\u003e\n\u003cp\u003eIt comes in waterproof plastic bags, which protect it from rain.\u003c\/p\u003e\n\n\u003ch2\u003eOrdering \u0026amp; delivery\u003c\/h2\u003e\n\u003cp\u003eSold in 20kg bags, priced per bag. A minimum order of 15 bags applies, shown when you add to basket. Bagged concrete is heavy, so delivery charges and lead times are shown at checkout.\u003c\/p\u003e\n","brand":"Industrial Supplies Co","offers":[{"title":"20kg bag","offer_id":63296626360707,"sku":"SSHF-865232-01","price":13.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0621\/3002\/8778\/files\/postfix-concrete-20kg-fence-post-786a507c-45c8-472f-aae7-f5b6efe53fbc.jpg?v=1794665366","url":"https:\/\/industrialsuppliesco.co.uk\/products\/postfix-rapid-setting-post-concrete-20kg","provider":"industrialsuppliesco.co.uk","version":"1.0","type":"link"}