TC Wet Bond Flexible Epoxy Mastic by Tapecoat

Corrosion preventive mastic coating for wet surfaces above or below the water line.


Tapecoat TC Wet Bond Flexible Epoxy Mastic® is a corrosion preventive epoxy coating for metal and concrete surfaces above and below the water line. This protective epoxy is also suitable for wet surfaces above and below ground and for underwater applications in fresh water environments.

TC Wet Bond Flexible Epoxy Mastic can be used to repair pipeline coatings, for coating irregular fittings and surfaces, and to perform general maintenance coatings repair in regulator vaults. It is ideal for the repair of damaged plant-applied coatings including coal-tar enamel.



TC Wet Bond Flexible Epoxy Mastic is a unique modified amine cured epoxy coating with a 100% solids content.


0 lbs/gal (0 kg/L)


100% by volume


40 ft2/gal (40 mils or 1.0 m2/liter (1.0 mm)


Gray or black

Time to dry to touch

4 to 8 hours at 70°F (21°C)

Application temperature

40°F to120°F (4°C to 49°C)

Operating temperature

-40°F to 165°F (-40°C to 74°C)


40 mils (1.0 mm)

Weight per gallon

10.6 lbs (4.8 kg)


11.2 lbs (5.1 kg)


8.3 lbs (3.8 kg)

Shore D Durometer

90 to 100

Surface Preparation

Remove all contaminants that would impede bond. Use effective cleaning procedures to remove: rust, dirt, oil and grease. This may include the use of high-pressure fresh water cleaning, using suitable solvents or detergents to SSPC-SP 1 or abrasive blast to SSPC-SP 6.


  • Environment: Use only where application and curing can proceed at temperatures above 40°F (4°C). The temperature of the surface and that of the coating itself must also be within these limits. Apply only on a clean surface. (See detailed Field Specifications for complete instructions.)

  • Mixing: Pour entire contents of hardener container into the resin container and mix thoroughly until homogeneously mixed, approx. 3-5 minutes.

  • Application Method: Apply epoxy by brush or pad.