{"product_id":"dow-dowsil-784-weather-sealant-310ml","title":"Dow Dowsil 784 Weather Sealant 310ml","description":"\u003cp\u003eDow Dowsil 784 weather sealant 310ml is a professional‑grade, 100 percent silicone formulation engineered for glazing, construction and industrial sealing applications requiring long‑term durability and environmental resistance. This dow dowsil 784 weather sealant 310ml product incorporates a built‑in fungicide that actively resists mould and mildew formation, making it ideal for areas exposed to moisture, humidity and temperature fluctuations. Its high elasticity and smooth, high‑gloss finish ensure both functional and aesthetic performance across a wide range of substrates.\u003c\/p\u003e\n\u003cp\u003eDesigned to withstand extreme temperatures, UV radiation and ozone exposure, this weatherproof silicone sealant 310ml maintains flexibility and adhesion without cracking or degrading over time. It offers a fast tack‑free time of approximately one hour and accommodates joint movement of up to plus or minus twenty‑five percent. The formulation conforms to ISO 11600‑G‑20LM, meeting recognised industry standards for low‑modulus glazing sealants.\u003c\/p\u003e\n\u003cp\u003eDow Dowsil 784 cures quickly, supporting efficient installation workflows and reducing downtime on site. While highly versatile, it is not recommended for use on porous external frame materials due to compatibility limitations. Overall, this sealant provides a reliable, long‑lasting solution for installers seeking performance, resilience and ease of application.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFast tack‑free time of approximately one hour\u003c\/li\u003e\n\u003cli\u003ePlus or minus twenty‑five percent joint movement capability\u003c\/li\u003e\n\u003cli\u003eHigh resistance to UV, ozone and temperature cycling\u003c\/li\u003e\n\u003cli\u003eSmooth, high‑gloss finish suitable for visible joints\u003c\/li\u003e\n\u003cli\u003eBuilt‑in fungicide for mould‑prone environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCommon Applications for Dow Dowsil 784 Weather Sealant 310ml\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGlazing interfaces — perimeter glazing, glass‑to‑frame sealing, weatherproof joints\u003c\/li\u003e\n\u003cli\u003eConstruction joints — façade interfaces, cladding connections, external weather seals\u003c\/li\u003e\n\u003cli\u003eSanitary environments — moisture‑prone areas requiring mould resistance\u003c\/li\u003e\n\u003cli\u003eIndustrial sealing — machinery housings, equipment enclosures, environmental protection joints\u003c\/li\u003e\n\u003cli\u003eGeneral weatherproofing — external joints exposed to UV, temperature cycling and humidity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHow to Apply Dow Dowsil 784 Weather Sealant 310ml\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSurface preparation — ensure surfaces are clean, dry and free from dust, oils and contaminants\u003c\/li\u003e\n\u003cli\u003eCutting and loading — cut cartridge tip, attach nozzle and load into a standard sealant gun\u003c\/li\u003e\n\u003cli\u003eApplying the bead — apply a continuous bead with steady pressure, ensuring full joint contact\u003c\/li\u003e\n\u003cli\u003eTooling the joint — smooth the sealant immediately to achieve a uniform finish and proper adhesion\u003c\/li\u003e\n\u003cli\u003eCuring guidance — allow full cure before exposing the joint to movement, moisture or cleaning agents\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFAQs for Dow Dowsil 784 Weather Sealant 310ml\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIs primer required? — generally no; only required for difficult or low‑energy substrates\u003c\/li\u003e\n\u003cli\u003eCan it be used externally? — yes, it is fully weatherproof and UV resistant\u003c\/li\u003e\n\u003cli\u003eDoes it resist mould? — yes, it contains a built‑in fungicide for high‑humidity environments\u003c\/li\u003e\n\u003cli\u003eIs it compatible with porous materials? — not recommended for porous external frames\u003c\/li\u003e\n\u003cli\u003eWhat is the curing time? — tack‑free in approximately one hour; full cure varies with humidity and joint depth\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan data-slate-node=\"text\"\u003e\u003cspan data-slate-leaf=\"true\"\u003e\u003cspan data-slate-zero-width=\"z\" data-slate-length=\"0\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003ca href=\"https:\/\/www.dow.com\/en-us\/pdp.dowsil-784-silicone-sealant-europe.03295303h.html?productCatalogFlag=1#overview\"\u003e\u003cspan data-slate-node=\"element\" data-slate-inline=\"true\" data-slate-fragment=\"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\"\u003e\u003cspan data-slate-node=\"text\"\u003e\u003cspan data-slate-leaf=\"true\"\u003e\u003cspan data-slate-string=\"true\"\u003eFor further information on this product, please click the link to visit the Manufacturer’s website.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003cspan data-slate-node=\"text\"\u003e\u003cspan data-slate-leaf=\"true\"\u003e\u003cspan data-slate-zero-width=\"z\" data-slate-length=\"0\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Dowsil","offers":[{"title":"Clear","offer_id":49173863694678,"sku":"3295303","price":6.84,"currency_code":"GBP","in_stock":true},{"title":"White","offer_id":49173863727446,"sku":"3295311","price":6.84,"currency_code":"GBP","in_stock":true},{"title":"Black","offer_id":49173863792982,"sku":"3295346","price":6.84,"currency_code":"GBP","in_stock":true},{"title":"Aluminium","offer_id":49173863825750,"sku":"3295354","price":6.84,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/2846\/7030\/files\/Dowsil-784-clear-scaled.jpg?v=1778594127","url":"https:\/\/alscoltd.co.uk\/products\/dow-dowsil-784-weather-sealant-310ml","provider":"Alsco Ltd","version":"1.0","type":"link"}