It is only water-resistant because it is designed to insulate while having varying degrees of water resistance, and it also won’t stick to wet surfaces either. While it isn’t waterproof, it provides good protection and resistance against water and is commonly used to seal joints against moisture.Īs you can see, most electrical tape isn’t waterproof. This type of electrical tape is unique because it doesn’t have adhesive and essentially binds to itself when wrapped tightly around an object. While not waterproof, it offers good protection against moisture. While this tape, like PVC, is not waterproof, it does offer good overall moisture resistance in environments where durability is required.Īnother popular option, polyester tape, has good temperature resistance and is flame retardant to some degree it is also resistant to chemical corrosion. Vinyl tape is well known and utilized as it has anti-corrosion and abrasion properties, and it is resistant to temperature and moisture to a good degree. If you need a tape that will work well with steam, humidity, or in other environments where there is moisture present, then mastic tape will be a great option. This electrical tape offers the greatest level of moisture resistance of the conventional electrical tapes available. The sticky element of mastic tape is highly malleable and has a tough rubberized back. Still, while it would provide a better level of protection, it’s also not waterproof and will eventually fail. It has better resistance to moisture and exposure to water than most electrical tapes. It can be used to increase the water-resistant properties of the connection. This term applies to various electrical tapes rubber tape is rugged and more durable than PTFE and is used mostly in low voltage applications. Used over PVC tape would certainly improve the water resistance of the connection, but ultimately, it would not be suitable for long-term use. Widely used by plumbers to seal pipe connections, PTFE has exceptional chemicals resistance and survives reasonably long periods in wet conditions. Still, this material is more resistant to abrasion and corrosion and offers greater water resistance, but it is not waterproof.Īs a general-purpose electrical tape for use under tough conditions, it has high durability and moisture resistance levels and is well suited for most insulating applications. PVC electrical tape is also used where the normal vinyl tape would be. Let’s look at the various types of electrical tape and what level of waterproofing each has. What Are The Waterproof Levels Of Different Electrical Tape? While standard vinyl tape is not waterproof, there are quite a few types of electrical tape and materials that are waterproof, so let’s look at some of those. It should not replace wire nuts or other more suited methods of connecting wires but rather add a layer of insulation to those connections. Regarding electrical applications, electrical tape can be used safely indoors and outdoors for insulating connected wires, covering strip connectors to add a level of water resistance, insulating automotive connections for trailers and caravans, and generally where voltages are under 600v.Īnother great property of electrical tape is that it can stretch, which helps protect and seal connections. While insulating wires and other connections is the most common, other uses outside of insulation don’t require the tape to be waterproof. Standard electrical tape has a vast range of applications. Where Can You Safely Use Electrical Tape?
If there is a lot of water present, the water will be short across the wiring, which would not be safe. When exposed to moisture, that adhesive starts to lose its effectiveness, and the tape will then peel off and expose the wiring to the elements. When you peel the tape off, you can feel the stickiness, which is designed to make it stick to itself when binding or the plastic outer cover of wires to keep it tight. The other reason that electrical tape struggles to be waterproof is the adhesive used on the tape. For this reason, it can be used outside with low exposure to water and moisture. 4 What Are Some Examples Of Waterproof Electrical Tape? Why Is Electrical Tape Not Waterproof?Įlectrical tape is made from vinyl and has a level of water resistance and protection against humidity.
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