FAQ: What do static-dissipative and conductive mean?

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Static-dissipative and conductive are terms—expressed in ohms—used to mathematically express a floor’s electrical resistance. Electrical resistance tells us how quickly or slowly the floor will allow static electricity to move from its surface through or across its various layers to ground.

Conductive floors measure less than 1.0 x 10E6 ohms.

Static-dissipative floors measure above 1.0 x 10E6 and less than or equal to 1.0 x 10E9 ohms.

To say a floor should be conductive or should be dissipative is simply incorrect. Conductive (EC) rubber, for instance, outperforms static-dissipative (SD) rubber. SD rubber, which gets its conductivity from a chemical additive, gains electrical resistance as the material dries out; over time—7 years, as cited by one study, SD rubber can actually become insulative.

Conversely, carpet tile in the static-dissipative range may be preferred over some conductive carpet. If the carpet tile is too conductive—or resistance varies from tile to tile, with overly conductive “hot spots”—the floor could pose a safety risk. In fact, the U.S. government and telecommunications industry prohibit the use of conductive floors near electrified equipment.*

     * Standards: FAA 019f, Motorola R56, ATIS 0600321

To perform effectively, a static-control floor should be neither too conductive nor too dissipative. Instead, the floor should fall into what we call the “sweet spot”—or within ideal functional range.

A diagram showing a range in Ohms from 25,000 (2.5 x 10E4) (marked “absolute limit”) to 1,000,000,000 (1.0 x 10E9) (also marked “absolute limit”). A blue shaded area runs from 25,000 to 1,000,000 (1.0 x 10E7) and is labelled “Conductive range”. A gray shaded area runs from 1,000,000 to 1,000,000,000 and is labelled “Dissipative range”. On orange shaded area in the middle runs from 100,000 (1.0 x 10E5) to 100,000,000 (1.0 x 10E8) and is labeled “Ideal zone”. A red arrow extends out to the left of it with the text “Approaching too conductive 25,000 to 100,000) and another red arrow extends to out to the right with the text “Approaching too insulate 100,000,000 to 1,000,000,000). Text underneath the graphic reads “All Staticworx static-control flooring tests within the safe range (sweet spot) shown above.

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Background graphic is a still from the StaticWorx GroundSafe ESD Flooring – Your Trusted Partner explainer animation. In the foreground at the bottom are two boxes. The top is a bright blue with the StaticWorx logo and "GroundSafe ESD Flooring" underneath in white. The second is a dark blue-gray and includes the text in white: “GroundWorx ESD Flooring – Your Trusted Partner”
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StaticWorx high-performance static-control floors protect electronic components, explosives, and high-speed computers from damage caused by static electricity. ESD flooring is part of a system. Choices should always be based on objective, researched evidence. When you partner with us, we look at all possible items that may need to integrate with the floor, and, focusing on your goals and objectives, help you find the right floor for your application.