Gaffers tape is a very different kind of tape similar only in appearance. It’s got a soft cotton content and is used to keep wires taped to things like rugs sea

Gaffers tape is a very different kind of tape similar only in appearance. It’s got a soft cotton content and is used to keep wires taped to things like rugs seamlessly so that people walking around your studio/tv-station/theatre etc don’t accidentally trip on it, potentially damaging the extremely expensive attached equipment in the process. If you’ve ever tried using “duct tape” as gaffers tape, you’d have a bad time, as it wouldn’t be that great at keeping wires down AND it’s likely to leave a residual adhesive on the floor when you take it off. Duck tape is the stuff developed for the US army to waterproof things closed. Post-war, they made it silver instead of green and marketed it for use with ducts (since being waterproof made it also SEEM like a good candidate for the job in heating systems), but its pretty terrible for this purpose since temperature changes degrade the adhesive rapidly. The tape you actually want to use for ducts is foil-backed tape. In short, it was and still is a great marketing gimmick, but Duck Tape was only ever “ok” at keeping things water proof and only looks like gaffers tape or the tape you want to use on ducts.