Sea Hawk Tuff Stuff Gray Epoxy Primer Sea Hawk's Tuff Stuff High Build Epoxy Primer dries fast and is able to complete a barrier system and bottom paint in just two days. Microsheet silicate technology allows the epoxy to build a 100% water barrier that protects the surface from water penetration and moisture. Can be used on aluminum, bronze, stainless steel, cast iron, and lead both above and below the waterline. Effective on fiberglass or bilge coating as it helps prevent blisters and is resistant to oil and water. A universal primer it can be used for corrosion protection and for priming metal. The overlapping barrier created by Tuff Stuff prevents any direct path for water migration. Click here to download Sea Hawk Tuff Stuff Safety Data Sheet Tuff Stuff Application Video Frequently Asked Questions What is Sea Hawk Tuff Stuff Gray Epoxy Primer used for? Sea Hawk Tuff Stuff Gray Epoxy Primer is a high-build epoxy primer designed to create a water barrier and protect surfaces from moisture penetration. It can be used for corrosion protection and metal priming above and below the waterline, as well as for fiberglass barrier coating and repair applications. What materials can Sea Hawk Tuff Stuff Epoxy Primer be applied to? Tuff Stuff can be used on aluminum, bronze, stainless steel, cast iron, and lead above and below the waterline. The product is also suitable for fiberglass and bilge coating applications, including use as a barrier coat over unblistered fiberglass or as a repair coat over blistered fiberglass. How many coats of Sea Hawk Tuff Stuff should be applied? The recommended number of coats is two to four, depending on the intended service. Tuff Stuff is a high-build epoxy primer, allowing fewer coats to achieve the desired coating system. The appropriate film thickness also varies by application method. What film thickness should I use when applying Tuff Stuff? When sprayed, the typical dry film thickness is 6–7.5 mils per coat, with a wet film thickness of 11.5–14.5 mils for a smoother finish. When applied by roller, the typical dry film thickness is 3.6–4.2 mils per coat, with a wet film thickness of 7–8 mils for a smoother finish. Can Sea Hawk Tuff Stuff be used as a fiberglass barrier coat? Yes. Tuff Stuff can be used as a barrier coat over unblistered fiberglass and as a repair coat over blistered fiberglass. Its microsheet silicate technology creates an overlapping barrier intended to prevent a direct path for water migration and help protect the fiberglass surface from moisture penetration. Can Sea Hawk Tuff Stuff protect metal from corrosion above and below the waterline? Yes. Tuff Stuff is designed for corrosion protection and metal priming above and below the waterline. It can be applied to aluminum, bronze, stainless steel, cast iron, and lead, providing a high-build epoxy barrier intended to protect the underlying metal from water and moisture exposure.