preparing for plumbing emergencies
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preparing for plumbing emergencies

Do you have a plumbing repair kit in your home to make emergency repairs quickly? Having everything you need in one bucket or box can help you eliminate some of the stress that comes with plumbing emergencies. On this blog, you will find out what you should have in your kit and some basic tips about making these repairs to avoid further damage to your home. It is my hope that you will find more than enough information to keep your home dry, your drains draining, and a peace of mind and lack of stress to tackle these dreaded household occurrences.

preparing for plumbing emergencies

When To Use Teflon Tape Or Thread Sealant When Connecting Pipes

Veronica Torres

There are multiple ways to connect two pipes together, and if you are performing your own plumbing repair, you may not know which method is best. You can either use Teflon tape, thread sealant, a combination of both, or not use anything at all. Here is what you need to know about these methods. 

When To Use Thread Sealant

If you are connecting black iron pipes that have tapered threads, the threads are going to get tighter as you put the fitting onto the thread. However, the connection is not going to be so tight that liquid is unable to seep through the fitting. This is a perfect example of when to use a thread sealant. The sealant is going to fill in the gaps between the threads and prevent any liquid from getting through the connection. The nice thing about a thread sealant is that it will not make the connection tough enough where you cannot undo the connection later on if necessary. 

When To Use Teflon Tape

The best use for Teflon tape is going to be when you are connecting two plastic pipes together. However, you must put the Teflon tape on very tightly so that it works its way into the plastic threads. When you connect the plastic pipes and joints together, you'll end up with a seal that is tight enough to prevent water from getting through.

Teflon tape can also be best in situations where you do not want to make a mess. Getting out the thread sealant can be messy, and if you are performing a repair in an area that has nice finishings already in place, you may not want to risk having to clean up a mess where sealant drips onto other areas. 

When To Use Nothing

You don't want to make the mistake of using Teflon tape or a sealant on anything that has a thread. For example, if you're connecting two pipes with a union connection, it actually pulls together the two faces of the pipe until they touch. There is then a seal that is made that makes the connection watertight. You also do not need to use anything on pipe connections where there is a gasket since that gasket is going to compress and make the connection liquid tight. Putting additional sealant or tape on the connection will not be necessary. 

When To Use Both

Of course, you also have the option to use both thread sealant and Teflon tape. There is certainly no harm in using both methods, except for the additional labor and cost of materials. That said, both methods can give you peace of mind that the connection is not going to leak later. If you are performing a repair of a pipe behind a wall that is hard to access, you may use both to avoid a situation of having to open up the wall again if it leaks later. 

To learn more, reach out to a company like Du-West Foundation Repair.


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