Hullgard Extra Epoxy Primer is a holding primer used as a base for subsequent fairing. It offers superb adhesion to properly prepared fiberglass, steel, aluminum, and wood. Primer offers excellent aged recoatability and provides a perfect base for subsequent fairing with Awlfair fairing compound(s). For use above and below the waterline. Mix ratio by volume is 10 parts D6120 to 1.5 parts D3730. Can be reapplied after 6 months without sanding. For fiberglass, steel, aluminum, & wood Can be used above & below the waterline | Awlgrip Hullgard Extra Epoxy Primer, Gallon