Frequently Asked Questions and additional information

Underwater application:
While Marine Tex putty can be applied underwater, it is likely to be washed away before it can cure. FlexSet is better for underwater applications due to its denser consistency. To test underwater application, mix the epoxy above water, and deposit 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.

Below-the-water-line applications:
It can be used for repairing gouges or holes located below the water-line. Once cured, Marine-Tex is impervious to water and many chemicals. The key is to apply in dry conditions, such as with the boat out of the water. 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 before application for maximum adhesion.

Will it cure in cold weather?
Epoxies need heat in order to cure. If your application temperature is not at least 60F you must apply heat to the area before, during, and after the application in order for it to cure. ITW 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.

Once fully cured, it may be drilled and tapped once. Do not attempt until full cure has occurred. Marine Tex is fuel resistant (gasoline, diesel) and is suitable for repairs where fuel exposure is possible. It can also be used for gelcoat repairs. We are sometimes asked if it suitable for potable water system repairs, and the answer is no.

Temperature range limitations:
While Marine Tex can safely tolerate 250F constant temperatures in a dry environment (with spikes to 325F), limits also depend on pressure and conditions.

How high of a temperature can Marine-Tex withstand?
Temperature limits depend on pressure and conditions. Up to 250F constant temperature in a dry environment, with spikes up to 300-325F.

Adding Pigments:
White Marine-Tex can be pigmented. No pure color will be achieved by adding pigments. (We recommend epoxy-friendly pigments, like Fibre-Glass Evercoat's.) Do not use more than 5% pigment per total volume of epoxy.

Gray Marine-Tex does not contain metal fillers. Both Gray and White have two year shelf lives in closed containers at moderate temperatures. Wen working with this epoxy putty, expect a pot life of approximately 30 minutes at 72 F. Do *not* use any thinners under any circumstances, as thinners change the physical properties.