{"product_id":"polyseal-waterproofing-kit","title":"PolySeal Waterproofing Kit — 4 m²","description":"\u003cp\u003e\u003cstrong\u003eA complete, flexible waterproofing kit that moves with your surface — and keeps sealing even if it cracks.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCovers about 4 m² per kit\u003c\/strong\u003e — enough for one leak, one damp patch, a small roof section or a garden pond. Bigger areas need more than one kit.\u003c\/p\u003e\n\u003ch2\u003eFull description\u003c\/h2\u003e\n\u003cp\u003ePolySeal is a polymer-elastomer waterproofing system you mix and apply yourself. Everything you need comes in the kit — the PolySeal binder, cement, geofabric reinforcement and a ClearCoat finish — so there's nothing extra to buy.\u003c\/p\u003e\n\u003cp\u003eOnce applied, PolySeal sets but stays \u003cstrong\u003epermanently flexible\u003c\/strong\u003e. It never goes hard or brittle, so it moves with the surface and keeps sealing even when the surface underneath develops shrinkage cracks. It's the same product Polyroads uses on industrial dam liners, canals and reservoirs — now packaged for trade and home projects.\u003c\/p\u003e\n\u003cp\u003eIt's supplied as a \u003cstrong\u003emix-on-site kit\u003c\/strong\u003e — PolySeal can't be sold pre-mixed because it would cure in the bucket, so you always apply a fresh, full-strength mix.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUse it to waterproof and seal:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConcrete and metal (zinc) roofs\u003c\/li\u003e\n\u003cli\u003eDam liners, canals and reservoirs\u003c\/li\u003e\n\u003cli\u003eKoi ponds and water features (we use it on our own koi pond)\u003c\/li\u003e\n\u003cli\u003ePool repairs and water tanks\u003c\/li\u003e\n\u003cli\u003eWalls — including sealing against acids and alkalis\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy it works where ordinary sealers fail:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStays flexible for life — it won't crack as the surface expands, contracts or settles\u003c\/li\u003e\n\u003cli\u003eBonds tightly to concrete and metal\u003c\/li\u003e\n\u003cli\u003eGeofabric reinforcement bridges cracks and joins, so the waterproofing holds even if the surface cracks beneath it\u003c\/li\u003e\n\u003cli\u003eProven on industrial dam, canal and reservoir projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's in the kit:\u003c\/strong\u003e PolySeal binder · cement · geofabric · ClearCoat finish — everything you need for the job.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow to apply (confident DIYer or contractor):\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eClean and prepare the surface (sweep and hose; for new or zinc roofs, wash with diluted vinegar or Spirits of Salt).\u003c\/li\u003e\n\u003cli\u003ePrime cracks, joins and roof nails and bond in the geofabric.\u003c\/li\u003e\n\u003cli\u003eMix PolySeal with the cement and sieve out any lumps.\u003c\/li\u003e\n\u003cli\u003eBrush or roll on the first coat, wait about \u003cstrong\u003e1 hour\u003c\/strong\u003e, then apply the second coat.\u003c\/li\u003e\n\u003cli\u003eFinish with the ClearCoat seal.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eCoverage:\u003c\/strong\u003e one kit covers approximately \u003cstrong\u003e4 m²\u003c\/strong\u003e. Working out a bigger job? A 30 m² flat roof needs roughly seven to eight kits — for areas that size, contact the office for trade pricing rather than ordering kits individually.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDrying:\u003c\/strong\u003e re-coat after about \u003cstrong\u003e1 hour\u003c\/strong\u003e. For ponds and dam linings, allow \u003cstrong\u003e3 days\u003c\/strong\u003e of full-sun curing before filling with water.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eColour:\u003c\/strong\u003e dries \u003cstrong\u003egrey\u003c\/strong\u003e. Colourants can be added to tint it to the shade you want.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eContractor or experienced DIYer? The PolySeal liquid is also available on its own in 20 L jerry cans and 210 L drums (see our Bulk \u0026amp; Trade collection) if you'd rather source your own cement and membrane.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestions?\u003c\/strong\u003e For larger quantities, trade pricing or a formal quotation, contact the office on +27 11 868-1181 or shop@polyroads.com — or simply order online.\u003c\/p\u003e","brand":"Polyroads","offers":[{"title":"Default Title","offer_id":53674056745144,"sku":"POLYSEAL-25KG","price":851.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0967\/0613\/4200\/files\/hf_20260825_071558_d0d5489a-e5df-4bc1-9143-575592e772ee.png?v=1787642257","url":"https:\/\/shop.polyroads.com\/products\/polyseal-waterproofing-kit","provider":"Polyroads","version":"1.0","type":"link"}