The Epoxy Files



Many high tech one-off custom boats are built with epoxy resin and exotic fabrics such as Kevlar and Carbon Fiber laminated onto cores of vinyl foam, balsa, or thermoplastic honeycomb. Phase Two epoxy is System Three Resins’ preferred material for this type of construction. These boats are built on male or in female molds in a variety of ways.


Epoxy resins are increasingly being used to repair polyester/ fiberglass boats both above and below the waterline. The usage techniques are identical to those used in wooden boat building and described in Section VI of this book. The only real difference when using wood and epoxy is that wood is porous, at least for the first coat. Fairing and hole filling on a fiberglass hull is no different than doing the same thing on epoxy-coated wood. The same materials and tools are used.


System Three Resins’ products have been used in many areas besides boatbuilding and repair. These areas include concrete repair, radar dome fabrication, piano repair, guitar making, art deco projects, jewelry making, pottery repair, golf club repair, outdoor sign production, home and professionally built hot tubs and spas, aircraft manufacture, tooling, electrical potting, home restoration, rock polishing, and sports equipment manufacture to name a few.


Following are questions we are commonly asked when something goes wrong. We hope that you will read them because the answer to your problem may appear below. If it doesn’t then call us on our technical line and we’ll go over it with you.

2018 Product Usage Estimations 1

The following will serve as a guide for estimating the amount of SilverTip™ Series product you’ll need. The key to any estimate is a reasonably accurate idea of the surface area involved. The numbers given are in square feet of coverage per gallon of mixed resin and hardener except as noted. Divide by 40 to convert figures to square meters per liter.

Searunner Trimaran 0

The first boat built with System Three General Purpose Epoxy was a trimaran named "Orion". Built by our founder Kern Hendricks and launched in 1981, she sails today and has crossed the Pacific Ocean.

Rail Repair w/ T-88 in the u-TAH dispenser 0

Oak Railing repaired after 10 Years with System Three T-88 Structural Epoxy Adhesive and the u-TAH Cartridge System. I bought my home in Freehold, NJ, back in July of 1997 and I've been staring at this split railing at the top of my staircase from the get go. I'm not sure how long it was like that before we bought the place, but let's figure it's been like that for, at least, 10 years. I've been sick of staring at, but since I couldn't even pull the delaminated piece back to the main body with my bare hands, I figured it would be a tough chore (probably require a bolt, which wouldn't look so clean).

V-2 Rocket 0

Alan Overmoe's model V-2 rocket takes off from the Salt Flats. The rocket fully loaded weighs 105 pounds and is powered by an "N" motor. Top speed is 725 feet per second, just under the speed of sound. Alan hails from Salt Lake and has built a white water dory using System Three epoxy.

PT-15 High-Performance Sailing Dinghy 0

The PT-15 is a high-performance, cold-molded, gaff-rigged sailing dinghy imagined by Dave Robison (director of the Northwest Maritime Center), designed by Paul Bieker (designer of the BMW Oracle AMERICA's Cup) and built at the Northwest School of Wooden Boatbuilding by the students using System Three Epoxy products.

Makah Indian Canoe 0

Makah Indian Canoe built by John Marples using cold-molded Constant Camber construction. The design was taken from the northwestern Washington State tribe's whaling canoes. Marples is well known for his Searunner Trimaran work.