{"product_id":"totalboat-polyester-structural-repair-putty-high-strength-marine","title":"TotalBoat Polyester Structural Repair Putty - High-Strength Marine","description":"\u003cp\u003eIn this review the TotalBoat Polyester Structural Repair Putty is evaluated for boatbuilders, repair technicians and DIYers needing a fast, high-strength structural filler. The bottom line: it is best for demanding repairs where bonding and bulk filling are critical because the pre-thickened polyester with long strand glass fiber delivers substantial adhesive strength and impact resistance while remaining easy to mix and apply.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFiber reinforced formula:\u003c\/strong\u003e Long strand glass fiber mixed into premium polyester resin provides increased crack resistance and strength in large bulk fills.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-thickened consistency:\u003c\/strong\u003e The paste-like putty holds shape and will not sag, making it practical for filleting, bedding and building radiused joints without slumping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast setting:\u003c\/strong\u003e With the recommended 1% MEKP catalyst the putty cures in roughly 15-20 minutes at 70F, enabling quick turnaround on structural repairs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile bonding:\u003c\/strong\u003e Works on fiberglass, wood, metal, polyester laminates and core materials so it can bond decks, stringers, liners and bulkheads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBulk-capable without shrinkage:\u003c\/strong\u003e Designed for large fills with no shrinking or cracking, even in substantial masses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish-ready:\u003c\/strong\u003e Sands smooth and accepts polyester fairing compound or gelcoat for cosmetic finishing when desired.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe putty is aimed at boat owners, repair shops and hobbyists who need a high-strength marine-grade filler for structural bonding, deck-to-hull work, stringer repairs and large chip or dent fills. Its quick set and strong adhesion make it a practical choice for time-sensitive repairs where a robust, permanent bond is required.\u003c\/p\u003e\u003cp\u003eThose who need a fine cosmetic fairing compound or slower working time for delicate shaping should look elsewhere, or plan to overcoat with a dedicated polyester fairing compound. Users inexperienced with peroxide catalysts should follow safety and mixing instructions carefully.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh adhesive strength from the polyester resin combined with long strand glass fiber makes it reliable for structural bonding.\u003c\/li\u003e\n\u003cli\u003eEasy to mix and apply with a paste-like consistency that spreads smoothly and holds a radius.\u003c\/li\u003e\n\u003cli\u003eFast curing allows multiple repairs in a short period and quick reworking of assemblies.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eSanding ability receives mixed feedback; while it sands smooth for many, some users find it more difficult to sand than epoxies or fine fairing compounds.\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003ePre-thickened polyester structural putty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReinforcement\u003c\/td\u003e\n\u003ctd\u003eLong strand glass fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended catalyst\u003c\/td\u003e\n\u003ctd\u003eMEKP at about 1% (14 drops per oz per 100g mass guideline)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking time\u003c\/td\u003e\n\u003ctd\u003eApproximately 15-20 minutes at 70F with 1% catalyst\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplications\u003c\/td\u003e\n\u003ctd\u003eBonding, bedding, filleting, filling screw\/bolt holes, bulk fills\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eSands smooth; overcoat with polyester fairing compound or gelcoat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit sizes\u003c\/td\u003e\n\u003ctd\u003eQuart and gallon kits; includes 2 oz MEKP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe TotalBoat Polyester Structural Repair Putty is a strong, fast-setting choice for anyone who needs durable structural bonding on boats or mixed-material repairs. It offers excellent value for bulk and structural work, combining long strand fiber strength with a non-sagging consistency; professionals and experienced DIYers will appreciate the speed and adhesion, while users seeking ultra-smooth final fairing should plan to overcoat.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eCan this be used below the waterline?\u003c\/strong\u003e\u003cbr\u003eYes, the product is designed for use above or below the waterline for structural bonding and bulk fills.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much catalyst is needed?\u003c\/strong\u003e\u003cbr\u003eUse about 1% MEKP by weight as a starting point (roughly 14 drops per ounce for a 100g mass) and adjust for temperature and desired working time.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it shrink or crack in large fills?\u003c\/strong\u003e\u003cbr\u003eNo, the formulation is intended for bulk fills and is resistant to shrinking or cracking even in large masses.\u003c\/p\u003e","brand":"TotalBoat","offers":[{"title":"Default Title","offer_id":48244029063387,"sku":"B07BR5VNH1","price":97.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71slwOjBwPL._AC_SL1500.jpg?v=1776277516","url":"https:\/\/gearmusthave.com\/products\/totalboat-polyester-structural-repair-putty-high-strength-marine","provider":"GearMustHave","version":"1.0","type":"link"}