The G-Tape 3040 BK Flashing Tape, featuring a black exterior and red adhesive interior, promises extreme performance for windows, doors, and decks. Ideal for deck builders, it includes detailed specs on length and width.
The G-Tape 3040 BK Flashing Tape is a high-performance black adhesive tape from Japan, measuring 4 x 65. Its perfect for windows, doors, and decks, favored by deck builders. The packaging includes specs and usage instructions in multiple languages.
The gleaming black and red G-Tape 3040 BK Flashing Tape, featuring a white interior and Vandermeer branding on its core, is elegantly angled against a plain white background—perfect for deck builders seeking durability.
The G-Tape 3040 BK Flashing Tape is a glossy black and red reflective tape built for high performance. It features a prominent central red stripe and caution text on the inner core, ideal for deck builders. This elegant tape is presented on a plain white surface.
A vertical roll of G-Tape 3040 BK Flashing Tape features a red stripe across its black surface. Known for extreme performance, the tape is partially unrolled, revealing its adhesive side and inner label against a plain white backdrop.
Close-up of hands applying G-Tape 3040 BK Flashing Tape to a wooden surface. One hand holds the roll while the other smooths it on, showcasing expert deck builders in an extreme performance during construction or repair.
Close-up of hands carefully applying G-Tape 3040 BK Flashing Tape on a wooden board edge, highlighting the visible wood grain and partially unwound tape roll—a detail appreciated by deck builders seeking exceptional performance.
The G-Tape 3040 BK Flashing Tape is an ideal choice for deck builders seeking extreme performance. It features a long, rectangular wooden beam design with a smooth surface and a black strip along the top edge, isolated on a white background.
The G-Tape 3040 BK Flashing Tape, featuring a black exterior and red adhesive interior, promises extreme performance for windows, doors, and decks. Ideal for deck builders, it includes detailed specs on length and width.
The G-Tape 3040 BK Flashing Tape is a high-performance black adhesive tape from Japan, measuring 4 x 65. Its perfect for windows, doors, and decks, favored by deck builders. The packaging includes specs and usage instructions in multiple languages.
The gleaming black and red G-Tape 3040 BK Flashing Tape, featuring a white interior and Vandermeer branding on its core, is elegantly angled against a plain white background—perfect for deck builders seeking durability.
The G-Tape 3040 BK Flashing Tape is a glossy black and red reflective tape built for high performance. It features a prominent central red stripe and caution text on the inner core, ideal for deck builders. This elegant tape is presented on a plain white surface.
A vertical roll of G-Tape 3040 BK Flashing Tape features a red stripe across its black surface. Known for extreme performance, the tape is partially unrolled, revealing its adhesive side and inner label against a plain white backdrop.
Close-up of hands applying G-Tape 3040 BK Flashing Tape to a wooden surface. One hand holds the roll while the other smooths it on, showcasing expert deck builders in an extreme performance during construction or repair.
Close-up of hands carefully applying G-Tape 3040 BK Flashing Tape on a wooden board edge, highlighting the visible wood grain and partially unwound tape roll—a detail appreciated by deck builders seeking exceptional performance.
The G-Tape 3040 BK Flashing Tape is an ideal choice for deck builders seeking extreme performance. It features a long, rectangular wooden beam design with a smooth surface and a black strip along the top edge, isolated on a white background.

G-Tape 3040 BK Flashing Tape

3040BK2

G-Tape 3040BK Flashing Tape has become a "must have" solution for deck builders across the country because of its extreme performance and simplicity. No other flashing tape performs like it. Deck joist life span is greatly increased.

Why You Need It 

  • Sticks to exterior surfaces in temperatures ranging from -20°F to 200°F.
  • Sticks to the toughest surfaces in the most extreme environments.
  • Tears easily by hand.
  • Easy to un-stick from itself and re-position.
  • Fifty-year aging tests show it retains over 60% of its original adhesion and 100% of its tensile strength.
$19.99
Size: 2" (65' roll)

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How G-Tape works

HOW IT WORKS

Acrylic adhesive tape is so much easier to use than common butyl tapes. Butyl tapes look like black goo and they tend to leak and get stuck to themselves just in the roll.


The adhesive on G-Tape has a negative charge. Steel nails have a positive charge. So the adhesive is attracted to the steel and then seeps into all the nooks and crannies of the wood surface to make a complete seal for permanent moisture protection.

EXTEND THE LIFE OF YOUR DECK

 

G-Tape is the cheapest way to protect your joists and decking from premature rot.

 

It's so much easier to use than many alternatives and works easily in a range of temperatures.

Matt used G Tape for this DIY deck build and loved it. Listen to what he had to say and see.


It's available in a 2" and a 4" format depending on the area you are trying to cover.