Tape thickness is usually measured in the United States in “mils”, or thousandths of an inch (1/1000”). The thickness can be measured from the bottom of the adhesive surface to the top of the outer surface or simply the film itself. In most cases, the thicker the tape the stronger and more durable it is. This is referred to as tensile strength. Thinner tape tends to be used for lightweight or temporary applications whereas thicker material is required for sealing heavy boxes and other heavy-duty applications. Duct tape is a great example of a thick adhesive roll whereas painting tape is often very thin and hand tearable.

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Useful applications

In most cases, you can choose different colors for your tapes. Depending on the purpose of the tape and the industry you work in, you may need to choose pre-determined colors for specific purposes. Classic examples include red for restricted areas, blue for medical purposes, and yellow and black caution tape for dangerous areas. Tape color coding varies according to individual needs, but there are some global standards.

The primary tapes used in electrical applications are vinyl, rubber, mastic, and varnished cambric. These products have been used in electrical work for many years, are code approved, and conform to key industry standards, including UL 520, ASTM D1000, and CSA 22.2. The Table below lists the primary uses for each of these types of tape.

If you’re working with live wires, for example, it’s always best to err on the side of caution and use heat-resistant tape instead.

When you need adhesive tape for construction repairs, you want something practical and reliable, and you don’t need to look any further than butyl tape.

RUBBER