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

EternaBond RoofSeal Black tape is a one-step permanent repair system that creates a waterproof, moisture- and air-tight barrier on virtually all roof types and accessories. It features MicroSealant® technology bonded to a UV-stable backing and remains flexible down to –70 °F, resisting thermal shock and leaks. The tape can be cut and folded around objects and adheres to surfaces including metal, masonry, wood and many single-ply systems.

Key features:

• MicroSealant® adhesive to UV-stable backing for long-term seal
• Waterproof, moisture-tight and air-tight barrier without additional sealing
• Bonds to EPDM, TPO, Hypalon, vinyl, metal, tiles, wood, concrete and more
• Flexible to –70 °F and compatible with high heat and thermal expansion
• Self-sealing overlaps and conforms to complex shapes

• SKU/Size: EB-RB020-50R (2″ × 50′ roll)
• Backing: UV-stable film (color: black)
• Total thickness: 35 mils (±2 mils) 
• Adhesion: 20 lbs+ per inch width 
• Elongation: >700% (±100) 
• Temperature range: –70 °F to >200 °F 
• Application temperature: –20 °F to +150 °F (with primer for <40 °F)
• Water vapor transmission (ASTM E96B): 0.005 g/100 in²/24 h @ 100 °F 
• Permanence: 0.001 perms maximum 
• Available widths: 2″, 4″, 6″, 8″, 12″, 24″, 36″ × 50′ 
• Per case: 2″ × 50′ – 12/Case; 4″ × 50′ – 6/Case; 6″ × 50′ – 4/Case; 8″ × 50′ – 3/Case; 12″ × 50′ – 2/Case 
• Shelf life: Up to 5 years when stored between 40 °F and 100 °F (4 °C–38 °C) in original container

• Clean the repair area thoroughly, removing dust, oil, grease, rust or scale.
• If ambient temperature is below 40 °F or surface is porous, apply EternaPrime® primer and keep tape at room temperature.
• Cut the tape to the required length and peel off the release liner gradually while positioning on the repair area.
• Press the tape firmly into place using hand pressure or a steel roller to activate the adhesive.
• For adjoining strips or wrapping areas, overlap properly and check edges for full adhesion and no voids.

Q: What substrates will RoofSeal Black adhere to?
A: It adheres to a wide range of surfaces including EPDM, TPO, Hypalon, metal roofs, wood, concrete and masonry.

Q: What colors are available in the RoofSeal product line?
A: The product is available in black, white or gray with the UV-stable backing.

Q: Can RoofSeal Black be used in cold weather conditions?
A: Yes. It remains flexible down to –70 °F and can be applied as low as –20 °F with primer and tape pre-warmed.

Q: Are silicone-based sealants compatible with RoofSeal Black tape?
A: No. The manufacturer advises against use of silicone-based sealants or lubricants near the tape as they can interfere with adhesion.