{"product_id":"duraglas-fiberglass-filled-filler-1-gallon-strong-waterproof-auto","title":"Duraglas Fiberglass Filled Filler 1 Gallon - Strong Waterproof Auto","description":"\u003cp\u003eOur review of Duraglas Fiberglass Filled Filler finds it best suited for DIYers and professional body shops that need a durable, reinforced repair material for rusted panels and damaged fiberglass. The single biggest reason to buy is its short-strand fiberglass reinforcement, which provides superior strength compared with ordinary putty and holds up well on welds, bond seams and large patch jobs. It mixes 2% by weight with the supplied cream hardener and cures into a waterproof, rustproof repair that accepts finishing putty or All-Metal top coat for a sealed result.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiberglass reinforcement:\u003c\/strong\u003e Short-strand fiberglass fibers are blended into the filler to deliver extra tensile strength on cracks, holes and rust-outs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal and fiberglass use:\u003c\/strong\u003e Formulated to adhere to both metal and fiberglass panels so one product can handle mixed-substrate repairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof and rustproof:\u003c\/strong\u003e The cured filler resists moisture and prevents further corrosion when used correctly on rust repairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorks with fiberglass cloth:\u003c\/strong\u003e Can be used with cloth for large repairs to build structure and reduce sag in vertical patches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinishing compatibility:\u003c\/strong\u003e Accepts All-Metal as a top coat and can be shaped with finishing putty for a smooth final surface.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eDuraglas is aimed at automotive and marine repairers who need a strong, long-lasting filler for rusted body panels, holes and fiberglass tears. It suits experienced DIYers and shops that can weigh and mix at the recommended 50:1 ratio and work quickly with a cream hardener for fast set times.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include casual users who prefer premixed or squeeze-tube products and anyone uncomfortable measuring by weight or working with a separate hardener. For tiny surface blemishes a standard finishing putty alone may be simpler.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExcellent adhesion to metal and fiberglass for reliable patch repairs.\u003c\/li\u003e\n\u003cli\u003eReinforced with short-strand fiberglass for greater structural strength than plain putty.\u003c\/li\u003e\n\u003cli\u003eWaterproof and rustproof once cured, making it suitable for marine and exterior use.\u003c\/li\u003e\n\u003cli\u003eCompatible with fiberglass cloth and All-Metal top coat for larger or sealed repairs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRequires measuring by weight and mixing with a separate hardener, which adds steps compared with ready-mixed products.\u003c\/li\u003e\n\u003cli\u003eSome customers report occasional issues with damaged cans, so inspect packaging on arrival.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eFiberglass filled body filler\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVolume\u003c\/td\u003e\n\u003ctd\u003e1 gallon\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFill type\u003c\/td\u003e\n\u003ctd\u003eShort-strand fiberglass reinforced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMix ratio\u003c\/td\u003e\n\u003ctd\u003e2% by weight (50:1) with supplied cream hardener\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuitable substrates\u003c\/td\u003e\n\u003ctd\u003eMetal, aluminum, fiberglass, wood, masonry, concrete\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuggested use\u003c\/td\u003e\n\u003ctd\u003eRust repairs, cracks and holes in fiberglass, weld areas and bond seams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor as packaged\u003c\/td\u003e\n\u003ctd\u003eBlue-green\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eDuraglas Fiberglass Filled Filler is a practical choice for anyone tackling structural body repairs that need reinforcement and waterproofing. Its fiberglass content and substrate versatility make it good value for shops and serious DIYers, provided the user is comfortable mixing to the recommended ratio and working with a separate hardener.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan Duraglas be used on both metal and fiberglass?\u003c\/strong\u003e\u003cbr\u003eYes. It is formulated for adhesion to metal, aluminum and fiberglass and is recommended for mixed-substrate repairs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the proper mix ratio?\u003c\/strong\u003e\u003cbr\u003eMix 2% by weight (a 50:1 ratio) of filler to the supplied cream hardener for correct curing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the cured repair waterproof?\u003c\/strong\u003e\u003cbr\u003eWhen cured and finished properly, the filler is waterproof and rustproof and can be sealed with All-Metal top coat for a completely watertight repair.\u003c\/p\u003e","brand":"U.S. Chemical \u0026 Plastics","offers":[{"title":"Default Title","offer_id":48676654907611,"sku":"B002I0MOY0","price":61.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/31Eknc-CmuL._AC_SL1100.jpg?v=1778711934","url":"https:\/\/gearmusthave.com\/products\/duraglas-fiberglass-filled-filler-1-gallon-strong-waterproof-auto","provider":"GearMustHave","version":"1.0","type":"link"}