Underground marker tape that works!

Signaltape® Underground Warning Tape is setting a new standard for protecting, identifying and locating all types of buried utilities.

Signaltape is a proprietary, low-cost solution developed to prevent excavation damage to buried utilities by providing a visible alert to the presence of a buried utility directly to the equipment operator.

“Excavation damage is a leading cause of serious pipeline incidents that cause death, injuries and property damage.”

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Underground WARNING TAPE

Designed to be pulled to the surface, directly alerting the equipment operator to the existence of a buried facility. This is due to the inclusion of a 3,000-pound tensile strength para-aramid fiber core material that ensures Signaltape does not shear until visible to the equipment operator.

Diagram of Signaltape performance as a warning tape
Exploded diagram depicting the components of Signaltape (R) Underground Warning Tape. Yellow film is shown as top and bottom layers with a aramid fiber ribbon inbetween along with a copper clad steel tracer wire which is labeled optional.
Image of a warning tape pallet shown in a branded box
Image of a Signaltape® Underground Warning Tape box shown with all labels and a piece of red warning tape dispensing from the box.
description of how underground warning tape works using excavator
demonstration of how underground marking tape works
installation graphic for signaltape underground warning tape

Para-Aramid Fiber Core with 3,000 lbf. Tensile Strength

-  Sinusoidal core is made of shear resistant para-aramid fiber.
-  Patent-pending sine wave creates slack which coupled with its high strength works to pull tape to surface without shearing underground.
- The proprietary technology also allows the tape to maintain performance from varying angles of approach.

Durable Polyethylene Woven Film

-  Hydrophobic material allows the film to be more visible in the toughest conditions.

Custom Legend

-  Provide clear confirmation of buried utilities. Printed legend is fully customizable to include color logos, symbols, and text of any size/font at no additional cost.

Optionally Detectable

-  Our process allows the embedding of location devices including any tracer wire or 3M™ RF path markers.

Product Brochure

Tape Width:

4", 6", 12"

Roll Length:

Nondetectable: 1,000 feet

Detectable: 500 feet

Recommended Burial Depth:

12" or less below grade

Tensile Strength:

3,000 lbf . (tested to ASTM D-6775)


Electric, Telecommunications, Gas, Water, Wastewater


Open Trench Installation

Available in all APWA Compliant colors:

Red, Orange, Yellow, Green, Blue, Purple

Build America, Buy America (BABA) Compliant

Meets or exceeds applicable industry ASTM standards.

Technical data sheetTest report - ASTM D6775

Abbreviated Installation Instructions

It is recommended that Signaltape® Underground Warning Tape be buried 12 in (30 cm) or less below grade. The minimum distance from the top of the pipeline should be 12 in, with 24 - 36 in (60 - 90 cm) recommended as shown below.

Each run of Signaltape® must be overlapped by a minimum of 20 ft (6 m) or must be joined as shown on instruction sheet where possible.

Signaltape may also be installed with static or vibratory plow.

For complete Installation Instructions and Limited Warranty access downloadable Instruction Sheet below.

Image depicting recommended depth of underground warning tape for proper installation

Standard Legends

Current available options: Water, Reclaimed Water, Sewer, Electric, Fiber Optic, and Gas.

Customized Legends

Legend customization is optionally available and allows for the disclosure of contents and inclusion of emergency contact number along with digitally printed text, logos, and symbols in full color.

Image of marking tape with black and yellow warning symbols on a blue background with the words Caution Water Line Below.
Signaltape® Standard Legend - Water/Blue (6")
Image of marking tape with black and yellow warning symbols on a purple background with the words Caution Reclaimed Water Line Below.
Signaltape® Standard Legend - Reclaimed Water/Purple (6")
Image of marking tape with black and yellow warning symbols on a green background with the words Caution Sewer Line Below.
Signaltape® Standard Legend - Sewer/Green (6")
Image of marking tape with black and yellow warning symbols on a red background with the words Caution Electric Line Below.
Signaltape® Standard Legend - Electric/Red (6")
Image of marking tape with black and yellow warning symbols on an orange background with the words Caution Fiber Optic Line Below.
Signaltape® Standard Legend - Fiber Optic/Orange (6")
Image of wide warning tape with black stripes on yellow backdrop. Has warning symbols and the words Caution Buried Gas Line Below.
Signaltape® Standard Legend - Gas/Yellow (6")

Optional Integration of Tracer Wire

Designed with best practices in mind, Signaltape® offers the option to embed tracer wire in the tape.

>  PE (30) Jacketed Tracer Wire in 14 AWG CCS or 12 AWG CCS, other options may be available upon request.

Related Products

>  Signaltape® Technology is available with embedded radiofrequency (RF) path markers in the 3M™ Electronic Marking System (EMS) Warning Tape 7900 Series.

> Trenchtape™ Underground Warning Tape features Signaltape® Technology combined with a 20" wide film.

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