{"product_id":"gacoflex-sf42-silicone-seam-sealant-18-9-litres","title":"GacoFlex SF42 Silicone Seam Sealant – 18.9 Litres","description":"\u003cp\u003eSeal roof seams, laps, upstands and fixings with GacoFlex SF42, a fibre-reinforced silicone sealant designed for detailing work within the GacoFlex silicone roof system. Supplied in an 18.9 litre pail in White, it creates a waterproof, flexible seal before the roof is coated with GacoFlex S42.\u003c\/p\u003e\n\u003cp\u003eAlso known as GacoFlex SF4200 SeamSeal, SF42 combines a high-adhesion silicone sealant with built-in reinforcement. Routine seams and details can be treated without bedding in a separate scrim or mesh, simplifying preparation of these areas.\u003c\/p\u003e\n\u003cp\u003eThe solvent-free, single-component formulation moisture-cures to form a waterproof, elastomeric seal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt-in fibre reinforcement – no separate scrim or mesh required for routine seams and details.\u003c\/li\u003e\n\u003cli\u003eSolvent-free and single-component – no separate hardener to mix.\u003c\/li\u003e\n\u003cli\u003eMoisture-curing silicone – forms a flexible, waterproof seal.\u003c\/li\u003e\n\u003cli\u003eExcellent system adhesion – adheres to GacoFlex silicone coatings and GacoFlex A4271 Bleed Trap base coat.\u003c\/li\u003e\n\u003cli\u003eVersatile detailing product – suitable for seams, laps, flashings, upstands and roof fixings.\u003c\/li\u003e\n\u003cli\u003eDurable finish – offers good colour stability and resistance to chalking.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable Applications: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eGacoFlex SF42 is used as a flashing material and joint and fastener sealant before applying the main GacoFlex S42 roof coating. Typical applications include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSeams and overlapping joints on metal roofs.\u003c\/li\u003e\n\u003cli\u003eRoof fasteners and fixings.\u003c\/li\u003e\n\u003cli\u003eFlashings and upstands.\u003c\/li\u003e\n\u003cli\u003eLocalised repairs to compatible roof surfaces.\u003c\/li\u003e\n\u003cli\u003eFilling cracks in smooth built-up roofing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGaps wider than 6mm require embedded fabric reinforcement.\u003c\/strong\u003e Always follow the specified detail and current manufacturer’s application instructions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePail Size, Colour and Coverage \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eProduct - GacoFlex SF42 \/ SF4200 SeamSeal.\u003c\/li\u003e\n\u003cli\u003eType - Fibre-reinforced silicone seam sealant.\u003c\/li\u003e\n\u003cli\u003ePail size - 18.9 litres.\u003c\/li\u003e\n\u003cli\u003eColour - White.\u003c\/li\u003e\n\u003cli\u003eApproximate coverage - 223 linear metres of seam per pail.\u003c\/li\u003e\n\u003cli\u003eCuring method - Moisture-curing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCoverage is approximate and will vary depending on seam width, application thickness, surface condition and the complexity of the details being treated.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePreparation and Application\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSurfaces must be sound, clean and suitably prepared before application. Apply SF42 to the required seams, laps, fasteners and details in accordance with the GacoFlex system specification before coating the roof with GacoFlex S42.\u003c\/p\u003e\n\u003cp\u003eCheck the current technical data sheet for substrate compatibility, preparation requirements, application conditions and curing times.\u003c\/p\u003e\n\u003cp\u003eOrder GacoFlex SF42 Silicone Seam Sealant from All Flat Roofing Supplies, with UK-wide delivery.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003ePlease read the Delivery Information tab below before placing your order. By placing an order, you confirm that you have read and understood this information.\u003c\/strong\u003e\u003c\/h3\u003e","brand":"Gaco","offers":[{"title":"Default Title","offer_id":57608321597766,"sku":"SF4200-5","price":573.6,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/0572\/1670\/files\/GacoFlexSF42SeamSealer.jpg?v=1792142245","url":"https:\/\/flatroofingsystems.co.uk\/products\/gacoflex-sf42-silicone-seam-sealant-18-9-litres","provider":"Flat Roofing Systems","version":"1.0","type":"link"}