103 Crack & Joint Sealant

Elastek 103

E-Las-Tek® 103 Crack & Joint Sealant is a thick, white, long lasting elastomeric sealant that won’t dry out or crack over time. A true multi-purpose patching compound which works well with roofing, masonry, metal, plastic, and wood substrates. Formulated to provide superior waterproof sealing performance under harsh weather conditions.


  • Multi-purpose problem solver
  • Fills seams, repairs cracks, and smooths rough surfaces
  • Excellent weatherproof performance
  • Will not sag on vertical surfaces
  • Ideal for filling holes, gaps, seams, joints, and cracks in a wide variety of above-grade substrates
  • Can be used for repairing foam roofs, pitched roofs, flat roofs, and parapets
  • Perfect for repairing stucco, and most metal and wood surfaces
  • Use in place of plastic roof cement
  • No cracking or bleed-through
  • Outstanding strength and elongation properties that allow it to expand and contract with substrates, thereby maintaining a constant seal
  • Compatible with all E-Las-Tek® roofing products


  • 1 Gal. Can
  • 2 Gal. Pail
  • 5 Gal. Pail


  • White