🔨 Repair Like a Pro with Bondo! Designed for longevity, this resin withstands the test of time and elements. Experience the strength of a two-part formula that creates an unbreakable bond. Seal cracks, fill holes, and repair breaks effortlessly with this user-friendly solution. 100% waterproof formula ensures a durable seal for all your repair needs. Perfect for fiberglass, metal, wood, and masonry surfaces—inside or out. Interior & Exterior use 100% Waterproof High-strength sealer Bondo Fiberglass Resin is a robust, 100% waterproof solution designed for both interior and exterior repairs. With a two-part formula, it offers a strong chemical bond suitable for various surfaces, including fiberglass, metal, wood, and masonry. This 28.8 fl oz can is perfect for sealing cracks, filling holes, and ensuring long-lasting durability in any repair project.