System Three general purpose epoxy works great for wood construction and repair, for gel coat blister repair, and for general fiberglass repair. Use at a simple 2:1 volume ratio with any of the three hardeners. Use at temperatures as low as 35 degrees Fahrenheit with no limitations on humidity. The medium-low viscosity of System Three general purpose epoxy allows for use as is for coating and fiberglass work. Combine with different fillers to make adhesive, filleting and fairing compounds.Adapt System Three to any applicationGained wide acceptance in the wooden boat building and repairWorks under conditions where other epoxies fail!