{"product_id":"bostik-seal-n-flex-one-plus-p590-polyurethane-sealant-copy","title":"Bostik Seal ‘N’ Flex One Plus P590 Polyurethane Sealant 300ml","description":"\u003cdiv role=\"main\"\u003e\n \u003cp\u003eFor expansion and construction joints in precast panels, concrete cladding, and window installations where joint movement causes standard sealants to shear or pull away, Seal ‘N’ Flex One Plus P590 Polyurethane Sealant 300ml provides a low-modulus, high-movement barrier. This polyurethane formulation cures bubble-free—even on damp or moist substrates—to handle extreme joint expansion and compression cycles without structural failure.\u003c\/p\u003e\n\n \u003ch3\u003eHigh-movement joint performance\u003c\/h3\u003e\n \u003cp\u003eSeal ‘N’ Flex One Plus P590 is a low-modulus sealant, meaning it remains highly flexible after curing. It accommodates joint expansion up to +100% and compression down to -50%, absorbing the thermal expansion and contraction common in precast concrete tilt-up panels, brickwork, metal cladding, and aluminium window frames. With an elongation at break exceeding 1000%, it stretches reliably over wide movement cycles without tearing or losing adhesion to the joint faces.\u003c\/p\u003e\n\n \u003ch3\u003eNumbers that matter\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003e+100% \/ -50% joint movement:\u003c\/strong\u003e Absorbs high cyclic movement in external cladding joints, reducing the risk of adhesive failure under extreme thermal shifts.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e\u0026gt; 1000% elongation at break:\u003c\/strong\u003e High elasticity prevents the sealant from tearing internally when joints open to their maximum width.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e2.5-3mm per 24 hours cure rate:\u003c\/strong\u003e Standard moisture-curing window, reaching full cure in 7 days on porous substrates, and requiring more than 14 days for joints wider than 20mm.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e-30 to 80°C temperature resistance:\u003c\/strong\u003e Maintains its physical seal properties and elasticity in harsh external environments and high-exposure metal facades.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e2.8g\/L VOC:\u003c\/strong\u003e Low-emission formulation suitable for environmentally rated projects, conforming to Singapore Green Building Council standards.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhere to use it\u003c\/h3\u003e\n \u003cp\u003eThis sealant bonds to major construction substrates and panel systems, including:\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eConcrete and masonry:\u003c\/strong\u003e Insitu concrete, render, precast and tilt-up panels, brickwork, block work, GRC, and natural stone such as granite, sandstone, and marble.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCladding and windows:\u003c\/strong\u003e Aluminium composite materials, metal cladding, fibre cement sheet, and aluminium windows.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePlasterboard:\u003c\/strong\u003e Plasterboard face and paper-lined recessed edges.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMetals and plastics:\u003c\/strong\u003e Aluminium, u-PVC, brass, copper, and stainless steel.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eApplication and priming rules\u003c\/h3\u003e\n \u003cp\u003eBostik Seal ‘N’ Flex One Plus P590 adheres to standard concrete, mortar, and bare aluminium without a primer. However, specific installation conditions require substrate priming to guarantee bond integrity:\u003c\/p\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePorous substrates:\u003c\/strong\u003e Use \u003ca href=\"\/products\/n49-primer\"\u003eBostik N49 Primer\u003c\/a\u003e for maximum performance on porous surfaces, and always prime for periodically immersed or submerged applications. Vertical joints in dry, clean concrete or masonry do not require priming.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eNon-porous substrates:\u003c\/strong\u003e Use \u003ca href=\"\/products\/n40-primer\"\u003eBostik N40 Primer\u003c\/a\u003e for non-porous plastic and metal substrates, including u-PVC outlets, pipework, brass, copper fittings, and stainless steel trays or flashings. Apply using the two-cloth method.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eComposite panels:\u003c\/strong\u003e Coated aluminium panels often carry protective wax or plastic coatings; always perform a Pre-tested Adhesion to Substrate (P.A.T.S.) test to verify bonding before full application.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eJoint geometry:\u003c\/strong\u003e For joints 5mm to 10mm wide, use a 1:1 width-to-depth ratio. For joints wider than 10mm (up to 80mm), calculate depth using the formula: Depth = (Width \/ 3) + 6mm. Always install a backing rod before priming to control sealant depth and prevent three-sided adhesion.\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eLimitations\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eDo not apply to cement-based substrates within 28 days of the initial pour or set.\u003c\/li\u003e\n \u003cli\u003eDo not use in trafficable joints, for glazing applications, or in chlorinated water environments like swimming pools and spas.\u003c\/li\u003e\n \u003cli\u003eDo not use in constantly immersed salt water.\u003c\/li\u003e\n \u003cli\u003eDo not apply in temperatures below 5°C or above 40°C, or expose the sealant to water or alcohol before it has completely cured.\u003c\/li\u003e\n \u003cli\u003eDo not use on PE, PP, PC, PMMA, PTFE, soft plastics, neoprene, or bituminous substrates.\u003c\/li\u003e\n \u003cli\u003eDo not use in joints less than 5mm or wider than 80mm.\u003c\/li\u003e\n \u003cli\u003eWhite sealant may yellow on the surface if exposed to strong natural or artificial UV light for prolonged periods.\u003c\/li\u003e\n \u003cli\u003eIf painting, wait a minimum of 7 days. Solvent-based coatings (such as enamels or oil-based paints) may react with the sealant, leaving a tacky surface. Surface coatings may crack, craze, or discolour due to joint movement.\u003c\/li\u003e\n \u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Bostik","offers":[{"title":"Grey \/ Box Buy (20)","offer_id":48530780029120,"sku":"SNF1GR\/CTG\/BOX","price":238.8,"currency_code":"AUD","in_stock":true},{"title":"White \/ Box Buy (20)","offer_id":48530780061888,"sku":"SNF1WH\/CTG\/BOX","price":238.8,"currency_code":"AUD","in_stock":true},{"title":"Black \/ Box Buy (20)","offer_id":48530780094656,"sku":"SNF1BL\/CTG\/BOX","price":238.8,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0507\/3630\/0224\/files\/sikasealnflex1plus.png?v=1756198091","url":"https:\/\/adheseal.com.au\/products\/bostik-seal-n-flex-one-plus-p590-polyurethane-sealant-copy","provider":"Adheseal","version":"1.0","type":"link"}