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Flashing & Masking Tape

Sealing, Flashing, and Surface Protection Materials

Butyl, flashing, and masking tapes are used for sealing joints, managing transitions, and protecting surfaces across construction, waterproofing, and installation applications. These tapes support moisture control, air sealing, and temporary masking on common substrates such as wood, concrete, metal, and sheathing. This collection includes tapes intended for reliable adhesion, controlled application, and dependable performance during preparation and assembly work.

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Roll of 2 inch 3045 Nichigo Gatorade tape on a white background
Roll of 2 inch 3045 Nichigo Gatorade tape on a white background

Alpha Nichigo G-Tape 3045 Series Flashing Tape

Alpha
$21.32 - $89.96
$21.32 - $89.96
$21.32 - $89.96
$21.32

Alpha Nichigo G-Tapeâ„¢ 3045 Series is a self-adhering flashing tape engineered specifically for bonding and seaming rubber-based materials. Construc...

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$21.32 - $89.96
$21.32 - $89.96
$21.32 - $89.96
$21.32
Roll of 2 inch Nichigo G-Tape on a white background
Collection of G-Tape rolls with labels on a white background

Alpha Nichigo G-Tape 3040 Series Flashing Tape

Alpha
$18.20 - $89.96
$18.20 - $89.96
$18.20 - $89.96
$18.20

Alpha® 3040 Series High Adhesion Acrylic Flashing Tape is designed for contractors who need long-term moisture protection for deck joists, beams, w...

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$18.20 - $89.96
$18.20 - $89.96
$18.20 - $89.96
$18.20
Roll of 2 inch Nichigo G-Tape on a white background
Roll of 2 inch Nichigo G-Tape on a white background

Alpha Nichigo G-Tape 3035 Series Flashing Tape

Alpha
$18.20 - $29.64
$18.20 - $29.64
$18.20 - $29.64
$18.20

Alpha Nichigo G-Tapeâ„¢ 3035 Series is a linerless, self-adhering flashing tape designed for exterior wall fenestration, insulation seams, and waterp...

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$18.20 - $29.64
$18.20 - $29.64
$18.20 - $29.64
$18.20
Green G-Tape roll with Alpha Professional Tools branding on a white background
Green tape roll with Nichigo G-Tape branding on a white background Sold out

Alpha Green Nichigo G-Tapeâ„¢ 1000 Series

Alpha
$15.79 - $15.79
$15.79
$15.79 - $15.79
$15.79

Alpha® Green Nichigo G-Tape™ 1000 Series is a high-performance tape designed for professional contractors and tile installers. It offers clean hand...

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$15.79 - $15.79
$15.79
$15.79 - $15.79
$15.79
Sold out
G-Tape roll with Alpha Professional Tools branding in a clear package on a white background
Roll of black and yellow striped tape with Nippon Gohsei branding on a white background

Alpha Caution Nichigo G-Tape 1000 Series

Alpha
$13.90 - $13.90
$13.90
$14.07
$14.07 - $14.07
$14.07

Alpha® Caution Nichigo G-Tape™ 1000 Series is a waterproof caution tape designed for job site marking and surface protection. It offers reliable ad...

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$13.90 - $13.90
$13.90
$14.07
$14.07 - $14.07
$14.07
Sold out

OSI® QUAD® Butyl Flashing Tape

OSI
$0.00 - $0.00
$0.00
$46.24 - $66.19
$46.24 - $66.19
$46.24

OSI QUAD Butyl Flash is a self-adhesive flashing tape designed to form an air and vapor barrier around window and door flanges, joints, and penetra...

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$0.00 - $0.00
$0.00
$46.24 - $66.19
$46.24 - $66.19
$46.24
Sold out
Alpha white Nichigo G-tape packaged on a white background
Alpha white Nichigo G-tape on a white background
Sold out

Alpha White Nichigo G-Tapeâ„¢ 1000 Series

Alpha
$16.30 - $16.30
$16.30
$16.30 - $16.30
$16.30

Alpha® White Nichigo G-Tape™ 1000 Series is a multi-purpose, all-weather tape designed for surface protection and general jobsite use. It provides ...

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$16.30 - $16.30
$16.30
$16.30 - $16.30
$16.30
Sold out
Alpha Professional Tools Clear Multi-Purpose G-Tape
Sold out

Alpha Clear Nichigo G-Tape 1000 Series

Alpha
$15.79 - $15.79
$15.79
$15.79 - $15.79
$15.79

Alpha® Clear Nichigo G-Tape™ 1000 Series is a waterproof contractor tape designed for surface protection, masking, and jobsite repairs. It tears cl...

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$15.79 - $15.79
$15.79
$15.79 - $15.79
$15.79
Sold out
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