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Alpha® Nichigo G-Tape™ 3045 Series — Self-Adhering Flashing Tape

Nichigo G-Tape™ 3045BK is a single-sided flashing tape built from a laminated polyethylene cloth backing bonded to a proprietary acrylic adhesive. It is engineered for high static shear to rubber materials — including EPDM and other low-surface-energy membranes — making it the go-to seaming tape where asphalt or butyl tapes fall short. Hand-tearable in straight lines, repositionable without wrinkles, and rated for all-weather service from -40°F to +176°F (-40°C to +80°C). Meets AAMA 711-13 Type A (without primer) Level 3, and AC 148.

Features

  • Laminated polyethylene cloth backing with proprietary acrylic adhesive
  • High static shear bond to rubber substrates including EPDM
  • Hand-tearable in straight lines — no knife or scissors required
  • Scrap-less design: face-to-face adhesive contact separates without damage
  • Repositionable during application without wrinkling
  • All-weather service range: -40°F to +176°F (-40°C to +80°C)
  • Effective replacement for asphalt and butyl tape in rubber seaming applications
  • Meets AAMA 711-13 Type A (without primer), Level 3, and AC 148
Part No. Size Type Color Bond UPC
3045BK-GT-2-65 2" x 65' (50mm x 20m) Premium Low Surface Energy Flashing Black Permanent 850011740842
3045BK-GT-3-65 3" x 65' (75mm x 20m) Premium Low Surface Energy Flashing Black Permanent 850011740897
3045BK-GT-4-65 4" x 65' (100mm x 20m) Premium Low Surface Energy Flashing Black Permanent 850011740859
3045BK-GT-6-65 6" x 65' (150mm x 20m) Premium Low Surface Energy Flashing Black Permanent 850011740866
3045BK-GT-9-65 9" x 65' (225mm x 20m) Premium Low Surface Energy Flashing Black Permanent 850011740873
3045BK-GT-12-65 12" x 65' (300mm x 20m) Premium Low Surface Energy Flashing Black Permanent 850011740880
  1. Ensure the substrate is clean, dry, and free of dust, oil, and loose particles before applying.
  2. Measure and cut the required length from the roll — or hand-tear in a straight line.
  3. Peel back a short section of the release liner and position the tape against the rubber surface.
  4. Press the tape into place; reposition without wrinkling if alignment needs adjustment.
  5. Continue peeling the liner while firmly pressing the tape along the seam.
  6. Use a J-roller or firm hand pressure across the full width to seat the acrylic adhesive.
  7. Verify edges are fully bonded; apply at temperatures within the rated -40°F to +176°F service range.
Black — 2" x 65' (50mm x 20m) — Premium Low Surface Energy Flashing — 3045BK-GT-2-65
Part No. 3045BK-GT-2-65
UPC 850011740842
Size 2" x 65' (50mm x 20m)
Type Premium Low Surface Energy Flashing
Color Black
Recommended For Seaming Rubber
Packaged Weight 0.50 lbs
Package Dimensions 5" x 5" x 2.25"
Commodity Code 3919.10.2055
Country of Origin Japan
Black — 3" x 65' (75mm x 20m) — Premium Low Surface Energy Flashing — 3045BK-GT-3-65
Part No. 3045BK-GT-3-65
UPC 850011740897
Size 3" x 65' (75mm x 20m)
Type Premium Low Surface Energy Flashing
Color Black
Recommended For Seaming Rubber
Packaged Weight 1.00 lbs
Package Dimensions 5" x 5" x 3.25"
Commodity Code 3919.10.2055
Country of Origin Japan
Black — 4" x 65' (100mm x 20m) — Premium Low Surface Energy Flashing — 3045BK-GT-4-65
Part No. 3045BK-GT-4-65
UPC 850011740859
Size 4" x 65' (100mm x 20m)
Type Premium Low Surface Energy Flashing
Color Black
Recommended For Seaming Rubber
Packaged Weight 1.55 lbs
Package Dimensions 5" x 5" x 4.25"
Commodity Code 3919.10.2055
Country of Origin Japan
Black — 6" x 65' (150mm x 20m) — Premium Low Surface Energy Flashing — 3045BK-GT-6-65
Part No. 3045BK-GT-6-65
UPC 850011740866
Size 6" x 65' (150mm x 20m)
Type Premium Low Surface Energy Flashing
Color Black
Recommended For Seaming Rubber
Packaged Weight 2.30 lbs
Package Dimensions 5" x 5" x 6.25"
Commodity Code 3919.10.2055
Country of Origin Japan
Black — 9" x 65' (225mm x 20m) — Premium Low Surface Energy Flashing — 3045BK-GT-9-65
Part No. 3045BK-GT-9-65
UPC 850011740873
Size 9" x 65' (225mm x 20m)
Type Premium Low Surface Energy Flashing
Color Black
Recommended For Seaming Rubber
Packaged Weight 3.25 lbs
Package Dimensions 5" x 5" x 9.25"
Commodity Code 3919.10.2055
Country of Origin Japan
Black — 12" x 65' (300mm x 20m) — Premium Low Surface Energy Flashing — 3045BK-GT-12-65
Part No. 3045BK-GT-12-65
UPC 850011740880
Size 12" x 65' (300mm x 20m)
Type Premium Low Surface Energy Flashing
Color Black
Recommended For Seaming Rubber
Packaged Weight 4.25 lbs
Package Dimensions 5" x 5" x 12.25"
Commodity Code 3919.10.2055
Country of Origin Japan
Property Detail
Backing Laminated polyethylene cloth
Adhesive Proprietary acrylic
Bond Type Permanent
Color Black
Recommended For Seaming rubber sheets (EPDM and similar)
Service Temperature -40°F to +176°F (-40°C to +80°C)
Standards AAMA 711-13 Type A (without primer), Level 3; AC 148
Length per Roll 65 ft (20 m)
Commodity Code 3919.10.2055
Country of Origin Japan

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⚠ WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov. Always wear appropriate PPE.

Especificaciones

Size 2", 3", 4", 6", 9", 12"