EZ-Fair epoxy fairing compound is a lightweight, two-part epoxy putty designed for filling and smoothing surface imperfections above and below the waterline. For fairing metal keels or any underwater surface. Use it for leveling uneven surfaces, filling gouges, scratches, or other damage on fiberglass, wood, or metal surfaces. Chemical and water-resistance means it's ideal for repairing blistered gel coats. Waterproof when cured. Non-sagging and non-shrinking and sands to a smooth finish. Can be easily painted. Fast-cure formula allows for quick re-coats.