Boat Repair and Maintenance featuring Marine-Tex epoxy systems


Frequently Asked Questions—
About Marine-Tex Products

Marine-Tex Rapid-Set questions
Marine-Tex TE-KA questions
Marine-Tex Gluvit questions
Marine-Tex FlexSet questions
Marine-Tex Epoxy Putty questions

Rapid-Set FAQ

Q: What color is the Rapid-Set Marine-Tex?
A: Gray.

Q: Is the Rapid-Set Marine-Tex as strong as regular Marine-Tex?
A: Although this 1:1 epoxy paste is not as strong as 5:1 Marine-Tex Epoxy Putty, it does provide a good bond to fill cracks and voids in Fiberglass, steel, aluminum, wood, cast iron and many hard plastics.

Q: How long can I work with Rapid-Set before it starts to harden?
A: About 5-10 minutes working time at 72°F.

Q: How quick does Rapid-Set Marine-Tex set up?
A: Sets up in minutes, full cure in a one hour at 72°F.

Q: Is Rapid-Set rated for potable (fresh) water repairs?
A: No, Rapid Set is not rated for potable water repairs.

Return to top of pageTE-KA FAQ

Q: Besides teak, can TE-KA be used on any other type of wood?
A: It is not recommended for other types of wood (because it is an aggressive cleaner), but can be used if both parts are diluted equally (by half) with water. Try a small test area first.

Q: What should I do if the TE-KA spills on Fiberglass or vinyl?
A: Always keep water on hand, clean the surface with a clean, wet rag. If the TE-KA has sat on the surface for a period of time, take toothpaste and TE-KA Part B (mix together well) and scrub the surface well.

Q: What should I do if I have black marks apparent after I finish cleaning w/ the TE-KA?
A: The TE-KA has been sitting on the deck too long, or has dried to the surface. Be sure that the deck is not saturated with water (i.e., let dry if just finishing an application of TE-KA.) Wet the deck, wash it again with Part A and water, scrub well (more than normal) and finish washing with Part B.

Return to top of pageGluvit FAQ

Q: Why is the resin can of Gluvit only partially full?
A: Materials are packaged in our facility by weight (ex. 2 lb or 8 lb.) All Gluvit containers are slack-filled (they are not full.) This leaves enough room for a power mixer to blend the resin and hardener entirely in one can.

Q: Can I use a pigment in the Gluvit?
A: Yes, any type of epoxy-friendly pigment is recommended. It will be tinted, no dark color will be achieved. (Fibre-Glass Evercoat's pigments work well.) Do not use more than 5% pigment per total volume of epoxy.

Q: What is the proper procedure for overcoating Gluvit?
A: To overcoat Gluvit after cure, wash the surface with warm soapy water or a dilute vinegar solution and a fine abrasive pad, or wet sand, then dry with clean towels or cloth. Frost-sand surface with 80-100 grit sand paper to remove any gloss.

Q: What type of paint should be used to overcoat Gluvit?
A: Gluvit can be overcoated with any marine paint or other coating compatible with epoxies. Check with your paint supplier and make sure the coating you are using is epoxy friendly and suitable for your application.

Q: What will happen if the Gluvit is not overcoated?
A: UV rays can deteriorate the epoxy, it will chalk (get cloudy) and possible crack over time. If there is no exposure to sunlight (ex. bottom of boat), there is no problem.

Q: What is Gluvit’s pot life?
A: Depends on temperature 60 minutes at 72°F.

Q: Can Gluvit be thinned?
A: Yes, Toluene, Xylene, Xylol, or Lacquer thinner in small amounts (no more than 5%.)

Q: Can I use Gluvit to coat the inside of my gas tank?
A: No, Gluvit is not resistant to gasoline. Gluvit can be used to protect the outside of an aluminum gas tank. Gluvit is an excellent barrier coat system that encapsulates the metal to protect against corrosion and pitting.

Q: Can I renew and seal soft or rotted wood with Gluvit?
A: Dry rot is a common problem on boats with wood cabins. Gluvit™ can help to restore damaged wood and seal it against further deterioration. Gluvit has a long “open time” that allows it to penetrate deep into porous or rotted wood.

Drill small holes in the damaged area and fill with Gluvit. It will be absorbed by the wood and its hard protective coating will seal against further attack by vermin or weathering.

Gluvit’s protective waterproof coating strengthens stringers, decking and molding, and it flexes with hull movements to maintain effective bridging. It also seals cracks, chips, pinholes, leaky seams and rivets.

Q: What color is Gluvit?
A: Gluvit is similar to amber in color.

Q: What is the consistency of Gluvit?
A: Gluvit is the consistency of paint. It is easily applied with a brush or roller.

Q: Is Gluvit rated for potable water repairs?
A: No, Gluvit is not rated for potable water repairs.

Q: Can I use Gluvit on concrete?
A: Yes, Gluvit performs well on properly prepared concrete. Make sure the concrete is fully cured and free of any contaminates including dust, dirt, grease, oil, etc. Apply the Gluvit with a roller or brush and allow to fully cure. Any areas exposed to direct sunlight should be overcoated with an epoxy friendly coating after full cure.

Q: How do I remove excess Gluvit off of tools?
A: If Gluvit is still wet, clean tools with soap and warm water. Rubbing alcohol can also be used. Be sure to wash down all tools and surfaces before the epoxy cures.

Return to top of pageFLEX-SET FAQ

Q: What does FlexSet adhere to?
A: FlexSet will adhere to plastics (like Polyethylene Starboard & Marine Lumber, PVC, Hypalon©, Lexan©, vinyl, acrylic, rubber and ABS), metals (especially soft metals like copper and aluminum), glass, wood and Fiberglass.

Q: What does FlexSet NOT adhere to?
A: FlexSet will not adhere to unclean surfaces that are greasy or oily. Also, any surface that contains Teflon, silicone or polypropylene.

Q: How do I repair a tear or puncture in an inflatable boat?
A: FlexSet easily repairs Hypalon® material when used with a patch. Clean the repair surface with MEK and lightly sand to create a profile. Apply the mixed FlexSet to the clean patch and smooth over the damaged Hypalon®.

Q: Can I apply FlexSet to a repair that is submerged in water?
A: Yes. FlexSet has an amazing ability to almost push the water aside so that it bonds directly to the repair surface. The attraction of the FlexSet to the repair area increases as the material reaches full cure (24 hours in 72°F)

Q: What temperatures can FlexSet withstand?
A: Once fully cured, FlexSet can withstand temperatures from -40°F to 200°F.

Q: Can I pigment FlexSet?
A: Yes. We recommend epoxy-friendly coloring agents, like Fibre-Glass Evercoat's. Do not use more than 5% pigment per total volume of epoxy.

Q: What is the working time, or pot life, of FlexSet?
A: 15 - 30 minutes working time at 72°F.

Q: What is the cure time of FlexSet?
A: FlexSet will fully cure in 24 hours at 72F

Q: Is FlexSet sandable and paintable?
A: Yes. FlexSet is sandable and paintable after a full cure. Be sure to use an epoxy friendly paint that is suitable for your application.

Q: Is FlexSet rated for potable (fresh) water repairs?
A: No. FlexSet is not rated for potable water repairs.

Q: Why is FlexSet the best product for bonding Starboard or Marine Lumber?
A: Both Starboard® and Marine Lumber are types of polyethylene plastic. FlexSet is one of only a few adhesives that can achieve a bond to polyethylene plastic. Please keep in mind that it is necessary to flame-treat the Starboard® or Marine Lumber to prep it correctly.

Q: Why is polyethylene plastic difficult to adhere to?
A: Polyethylene is designed to be a non-stick, easy-to-clean surface. It's chemical make-up is designed to reject anything from adhering to the surface. FlexSet conquers this problem, creating a chemical bond to the surface, when used with the flame-treatment method.

Q: How does the flame-treatment assist FlexSet in bonding to polyethylene?
A: The flame-treatment changes the polarity of the surface, making it ready for a strong adhesive (FlexSet).

Q: How do I know when the polyethylene is ready for bonding?
A: Once the area is flame-treated (per the directions) you will notice the polyethylene has lost its glossy look. A quick test to be sure the area is prepared correctly is to run a small amount of water over the surface. If the polyethylene was treated properly the water will "sheet" and run off the surface slowly. If the water beads up and runs off normally the flame-treatment was not successful.

Q: How quickly must I apply FlexSet to the flame-treated surface?
A: We recommend bonding within one hour after surface treatment.

Q: Can FlexSet create structural bonds to polyethylene?
A: FlexSet will create a chemical bond to the surface, but mechanical fasteners will still be required in high stress areas.

Q: Can I use FlexSet to fix my polyethylene gas tank?
A: Marine-Tex does not recommend flame-treating any project that may be associated with flammable materials. Flame-treating of items such as fuel tanks, chemical tanks, pipelines or other flammable containers is not recommended due to the danger of explosion or fire.

Return to top of pageMarine-Tex Epoxy Putty FAQ

Q: Is Marine-Tex Epoxy Putty safe for potable water repairs?
A: Marine-Tex is not rated for potable water repairs.

Q: Can I drill and tap Marine-Tex Epoxy Putty?
A: Yes, after it has fully cured Marine-Tex is drillable and tapable.

Q: Is Marine-Tex Epoxy Putty resistant to gasoline and diesel?
A: Yes, Marine-Tex Epoxy Putty is resistant to gasoline and diesel.

Q: Can Marine-Tex be used to repair gelcoat?
A: Yes. Applying polyester resin (like gelcoat) over epoxy is very tricky and must be done extremely carefully. The smaller the repair, the easier it is to coat epoxy with gelcoat. The larger the area, the polyester will be more difficult to work with and more likely to malfunction (not cure). Mix and apply the epoxy to the surface to be repaired. Be sure to use the correct proportions and keep the application at a minimum of 70˚F. Let the epoxy cure for a minimum of 48 hours. Leave more time for curing if temperatures are between 60˚F - 68˚F. (At least 72 - 96 hours.) This time for curing allows the amine blush (a waxy surfactant) to come to the surface. Clean the surface with warm, soapy water. Rinse with fresh water. Check to see if the blush is completely removed. Lightly sand with 120 grit sandpaper, clean again. You will now be ready to apply the gelcoat.

Q: How high of a temperature can Marine-Tex withstand?
A: Depends on pressure and conditions. Up to 250°F constant temperature in a dry environment, with spikes up to 300-325°F.

Q: What does Marine-Tex adhere to?
A: Metal, Fiberglass, glass, masonry, ceramic, wood, most plastics.

Q: What does Marine-Tex NOT adhere to?
A: Plastics like polyethylene and polypropylene, and also any unclean, oily, greasy, or otherwise contaminated surface.

Q: Can I pigment Marine-Tex?
A: Only the White Marine-Tex can be pigmented. No pure color will be achieved by adding pigments. (Marine-Tex recommends epoxy-friendly pigments, like Fibre-Glass Evercoat's.) Do not use more than 5% pigment per total volume of epoxy.

Q: Which color of the Marine-Tex is better to use for machinery bonds?
A: Gray. The Gray Marine-Tex is stiffer in contrast to the White Marine-Tex which is better for Fiberglass repairs.

Q: Are there metal fillers in Gray Marine-Tex?
A: No, Gray Marine-Tex contains no metal fillers.

Q: What is the shelf life?
A: Two years in a closed container at moderate temperatures.

Q: What is the pot life of Marine-Tex?
A: Depends on temperature, half an hour at 72°F.

Q: Can you use thinner with Marine-Tex?
A: No, it will change the physical properties of the Marine-Tex.

Q: Can I apply Marine-Tex under the water?
A: Yes, but the Marine-Tex is likely to wash away in moving water while it is trying to cure. The FlexSet is better for underwater applications because it is of a denser consistency. If you would like to try an underwater application, mix the epoxy above the water, then deposit it on wax paper or plastic wrap. Slide the wax paper or plastic wrap onto the palm of your hand with epoxy facing up. Take it below the water line and apply to surface. Be careful not to smack or pancake the product onto the surface, this will trap water under the epoxy. Instead, roll the epoxy onto the repair to push water out of the way. Leave wax paper/plastic wrap on the repair while full cure takes place for best results.

Q: Can I apply Marine-Tex in dry conditions on a below-the-water-line application?
A: Yes, the Marine-Tex is an excellent choice for repairing gouges or holes that are located below the water-line. Once cured, Marine-Tex is impervious to water and many chemicals. Since putties will go only where they are placed, be sure that the Marine Tex has completely encapsulated the problem area. It is a good idea to sand the perimeter of the repair so that the Marine-Tex achieves a grip on the solid surface around the repair.

Q: Will this epoxy cure in cold weather?
A: Epoxies need heat in order to cure. If your application temperature is not at least 60°F you must apply heat to the area before, during, and after the application in order for it to cure. Marine-Tex recommends you place a shop lamp approximately 12" - 18" in front of the application. The lamp will provide heat at a constant rate, so that the material's temperature is always constant. Do not apply a heat gun or hair dryer to the area, these types of heat will heat the area too much.

Q: How do I remove excess Marine-Tex off of tools?
A: If Marine-Tex is still wet, clean tools with soap and warm water. Rubbing alcohol can also be used. Be sure to wash down all tools and surfaces before the epoxy cures.

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Poster Courtesy of the United States Coast Guard

Vessel Safety Check - US Coast Guard Auxiliary

10 Ways to Paddle Safely

10 Ways to Paddle Safely

one. ALWAYS Wear Your Life Jacket
Wear a properly fitting U.S. Coast Guard-approved life jacket at all times on the water.

two. Don’t drink while paddling
Avoid alcohol, which impairs the coordination and balance you need to control a canoe, kayak, or raft.

three. Stay Low
Learn how to enter and exit your boat safely and stay low in your boat when possible. Most paddlesport-related drownings are the result of capsizing.

four. Keep Your Balance
Don’t overload your boat. Distribute passengers, secure gear evenly and low, and leave your dog on land.

five. Practice the Wet Exit
Learn how to get out of, hang on to, right, and re-enter your capsized boat.

six. Don’t Get Left in the Cold
Dress for the weather conditions and be prepared for coldwater immersion. Hypothermia is a danger any time of year.

seven. Plan Ahead
Know the water you're paddling, plan your day of paddling, and file a "float plan" so that someone knows where to find you and when you plan to return.

eight. Never Paddle Alone
Companions can come to your aid if you get in trouble. New paddlers should paddle with someone more experienced— it's a great way to learn and remain safe if there's a mishap.

nine. Be in Command
Know how to move your boat forward, back, and sideways, and how to stop using paddle strokes. Watch ahead for hazards like undercut rocks, bridge pilings, large branches and trees, big drop-offs, or other boats.

ten. Learn about Your boat
Consider taking a canoe or kayak safety class. Call 1-800-929-5162 or visit to learn about classes offered by the American Canoe Association.

How to choose the right Life Jacket. A handy guide from your United States Coast Guard

Marine-Tex®, FlexSet™, Gluvit™ and Te-Ka™ are registered trademarks of ITW Polymer Technologies, Montgomeryville, PA. Dural® and Smooth Sailing™ are registered trademarks of Smooth Sailing, Minneapolis, MN.
Trademarks and Registered Trademarks are the property of their respective owners.
©2015 Boat Repair and Maintenance, a division of Como Consortium Ltd. • Golden Valley, MN