Eternabond - RoofSeal, White UV Stable Seam Repair Tape 35mm

EternaBond RoofSeal Black is a one-step permanent repair tape designed for all roof types and accessories. It uses MicroSealant technology with a UV-stable backing to form a waterproof, moisture- and air-tight barrier without additional sealant. It remains flexible in extreme temperatures and bonds to a wide range of roofing and construction materials.

Key features:

• MicroSealant adhesive with UV-stable backing for long-term durability
• Forms an instant waterproof, moisture-tight and air-tight barrier
• Bonds to EPDM, TPO, PVC, Hypalon, CPE, SBS, APP, BUR, metal, tile, shingles, wood and masonry
• Flexible to very low temperatures, resisting cracking and thermal cycling
• Conforms around irregular shapes and edges for lasting adhesion

• Product: RoofSeal/OneStep Tape (EternaBond brand)
• Color: Black (also available in White and Gray)
• Standard roll size: 2″, 4″, 6″, 8″, 12″, 24″, 36″ × 50′
• Available widths: up to 48″
• Total thickness: RoofSeal 35 mils (±2 mils); RoofSeal Plus 65 mils (±2 mils)
• Adhesion: 20 lbs+/in width
• Low temperature flexibility: Excellent
• Application temperature: >150 °F to −25 °F (with primer recommended for 40 °F to −20 °F installs)
• Service temperature range: −70 °F to >200 °F
• Pliability: No cracks in membrane
• Water vapor test (ASTM E96B): 0.005 g/100 in²/24 h @ 100 °F
• Permanence: 0.001 perms maximum
• Elongation: >700 % (±100)
• Tensile break: 4500 psi (±500 psi)
• Shelf life: Up to 5 years
• 2″ × 50′ – 12 per case
• 4″ × 50′ – 6 per case
• 6″ × 50′ – 4 per case
• 8″ × 50′ – 3 per case
• 12″ × 50′ – 2 per case

• Clean and dry the surface, removing rust, dust, oil, and contaminants.
• For aged or porous surfaces, use EternaPrime primer before application.
• Cut the tape to the required length and gradually remove the release liner.
• Position RoofSeal and press down firmly, applying even pressure.
• Use a steel or hand roller to ensure full contact and proper adhesion along all edges.

Q: Are silicone-based sealants compatible with RoofSeal?
A: No. Silicone sealants or lubricants should not be used near RoofSeal, as they interfere with adhesion.

Q: What should be used to clean the surface before applying RoofSeal?
A: Use EternaClean or a residue-free solvent such as acetone or lacquer thinner for best surface preparation.

Q: When is RoofSeal Plus recommended over RoofSeal?
A: RoofSeal Plus should be used for rough, porous, or uneven surfaces that need extra sealing thickness.