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EternaBond 4" x 50' Black RoofSeal Sealant Tape

EternaBond RoofSeal
EternaBond RSB-4-50 4" x 50' Black RoofSeal Sealant Tape

Price: $70.30
MFG P/N: EB-RB040-50R
MFG: EternaBond
Weight (lbs): 4

Quantity in Stock :2

In Stock
Product Code: RSB-4-50


The EternaBond RSB-4-50 RoofSeal tape is black with a 50 foot length and a 4 inch width. Total thickness is 35 mil. RoofSeal has a UV stable backing, making it perfect for use outside. The high elongation factor lets RoofSeal expand or contract along with any changing conditions.

  • Easy to install, only minimal surface prep needed
  • Liquid tight
  • UV protection
  • High elongation factor
  • Can stick to itself & fit around objects
  • Adhesive has silicone lining to prevent tape from sticking before application
  • Useful for roof & leak repair, land-fill or pond linings, skylights, gutters, and seam repair
  • Feature MicroSealant Technology - 100% solids formulation consisting of synthetic resins, thermoplastics and noncuring rubber with a built-in primer
  • Compatible with EPDM, TPO, most PVC, CSPE/Hypalon, CPE, SBS, APP modifieds, aluminum, galvanized steel, wood, most plastics, fiberglass, brick, concrete, and other kinds of roofing material


  • Roll Size: 4" x 50'
  • Color: Black
  • Adhesion: 20 lbs+ /in width
  • Application Temperature: -20 F to 150 F ambient
  • Elongation: > 700% +/- 100
  • Low Temperature Flexibility: 1/2" radius at -30 F
  • Flexibility Temperature Range: -70 F to >200 F
  • Permanence: 0.001 perms max.
  • Pliability: No cracks in membrane
  • Shelf Life: Up to 5 years
  • Tensile Break PSI: 4500 PSI +/- 500 PSI
  • Total Thickness: 35 mil +/- 2 mil
  • Water Vapor Test: 0.005 grms/100" sq./24hrs/100 F


The area should be dry and free from debris or other substances before RoofSeal can be applied. Remove the lining as the tape is being applied to prevent mistakes and keep the tape from coming into contact with other surfaces or objects. Pressure should be applied to set up the bonding process and remove any air bubbles. This can be done with your hand, although a steel roller provides the best results. If the ambient temperature is 40 F to -20 F, the surface should be treated with EternaPrime surface conditioner before applying.

EternaBond RoofSeal Downloads

4" x 50' Black EternaBond RSB-4-50 Roof Leak Repair Tape