{"product_id":"totalboat-polyester-fairing-compound-quart-kit","title":"TotalBoat Polyester Fairing Compound Quart Kit — fast-curing trowelable marine filler, sandable finish","description":"\u003cstrong\u003eTotalBoat Polyester Fairing Compound is a high-viscosity, fast-curing two-part marine filler designed to fill, feather and fair gelcoat and fiberglass surfaces above the waterline.\u003c\/strong\u003e\n\n\u003cp\u003eWhether you’re smoothing minor gelcoat blemishes or evening out surface imperfections on composite parts, this quart kit provides a buttery, trowelable paste that mixes with the included MEKP catalyst and cures to a hard, sandable finish in as little as 20–30 minutes at 77°F. The product is formulated for cosmetic fairing—minimal shrinkage, easy feathering, and low odor make it a practical choice for boaters, repair shops and mold builders who need quick turnaround before priming or re-gelcoating.\u003c\/p\u003e\n\n\u003ch3\u003eHow quickly will this fairing compound cure and become sandable?\u003c\/h3\u003e\n\u003cp\u003eAt a typical shop temperature (77°F), mixed Polyester Fairing Compound begins to set rapidly, reaching a hard, sandable state in roughly 20–30 minutes when mixed with the recommended MEKP amount. Working time is short—plan small sections or use rapid application techniques.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMix ratio: add 14–16 drops of MEKP per ounce of compound at 77°F for 10–15 minutes working time.\u003c\/li\u003e\n  \u003cli\u003eCures to sanding hardness in about 20–30 minutes at recommended conditions.\u003c\/li\u003e\n  \u003cli\u003eMinimal shrinkage reduces the need for re-filling after cure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat surfaces and repairs is this fairing compound best suited for?\u003c\/h3\u003e\n\u003cp\u003eThis polyester fairing filler is engineered for cosmetic surface work on gelcoat, fiberglass and other composite surfaces above the waterline. It’s ideal for filling print-through, hairline spider cracks, pinholes and sanding marks, but it’s not intended as a structural repair on deep gouges.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for finishing and fairing—use after structural repair putties for deep damage.\u003c\/li\u003e\n  \u003cli\u003eWorks on boat hulls, decks, small molds, and fiberglass parts.\u003c\/li\u003e\n  \u003cli\u003eCan be tinted with polyester-safe colorants to better match surrounding gelcoat.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I apply and sand the compound to get a smooth feathered finish?\u003c\/h3\u003e\n\u003cp\u003eThe compound’s thick, creamy consistency spreads smoothly with a trowel or spreader and holds on vertical surfaces without sagging, which helps you build uniform feather edges. Once cured, it sands easily using progressively finer grits to achieve a pinhole-free base ready for primer, paint or gelcoat.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eApply with a clean trowel or spreader; feather edges thinly toward surrounding surface.\u003c\/li\u003e\n  \u003cli\u003eSanding requires fewer grit changes due to the compound’s easy-cut characteristic.\u003c\/li\u003e\n  \u003cli\u003eFor deep repairs, fill structurally first with TotalBoat Polyester Structural Repair Putty, then topcoat with this fairing compound.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre there special considerations for below-the-waterline use or safety tips?\u003c\/h3\u003e\n\u003cp\u003ePolyester Fairing Compound is formulated for above-waterline cosmetic work; if used below the waterline it must be overcoated with an approved epoxy barrier coat to prevent water ingress and adhesion issues. Always follow MEKP handling precautions and work in a well-ventilated area while wearing appropriate PPE.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNot recommended as a stand-alone below-waterline repair—use epoxy barrier when needed.\u003c\/li\u003e\n  \u003cli\u003eIncludes MEKP catalyst; store and use per safety data sheet instructions.\u003c\/li\u003e\n  \u003cli\u003eLess odor than many polyesters, but still use ventilation and protective gloves.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: TotalBoat Polyester Fairing Compound Quart Kit is aimed at boat owners, professional marine repair technicians, and composite fabricators who need a fast-setting, easy-to-sand fairing material for above-waterline cosmetic repairs and mold finishing. If you require structural rebuilding, pair this compound with a high-strength structural putty first; for quick, high-quality surface finishing and minimal rework, this kit is a practical, USA-made choice.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eFeatures:\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePremium marine-grade 2-part polyester fairing filler for cosmetic gelcoat and fiberglass repairs.\u003c\/li\u003e\n  \u003cli\u003eButtery consistency spreads smoothly and resists sag on vertical surfaces.\u003c\/li\u003e\n  \u003cli\u003eFast cure and easy sanding—works in 20–30 minutes at 77°F with minimal shrinkage.\u003c\/li\u003e\n  \u003cli\u003eVersatile uses: fairing hulls, decks, molds and composite parts; tintable with polyester-safe dyes.\u003c\/li\u003e\n  \u003cli\u003eAvailable as quart kit or gallon kit; each kit includes MEKP catalyst.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this compound below the waterline?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Only if you first apply an epoxy barrier coat over the cured polyester; otherwise it’s intended for above-waterline cosmetic repairs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much MEKP catalyst should I add?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Add about 14–16 drops of MEKP per ounce of compound at 77°F for a 10–15 minute working time and roughly 20–30 minute cure.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"TotalBoat","offers":[{"title":"Default Title","offer_id":48026561183905,"sku":"B07BR3M56R","price":113.97,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/6532\/5729\/files\/totalboat-fairing-compound-quart-front-label.jpg?v=1791374344","url":"https:\/\/canadiansporting.ca\/products\/totalboat-polyester-fairing-compound-quart-kit","provider":"Canadian Sporting","version":"1.0","type":"link"}