A master plumber shares his simple secret to prevent leaks: back up pipe joints wrapped with Teflon tape by dabbing them with pipe dope.
By the DIY experts of The Family Handyman Magazine:July/August 2012
Grab a brush full of pipe thread sealant and wipe it right
on top of the Teflon tape. Then assemble the fittings.
Wrapping Teflon tape around
pipe threads to create a seal
is standard procedure for
DIYers. But it's not foolproof.
Burrs inside the female fitting
can catch the tape and roll it
around. The leak will only
show up after you've finished
the job and turned on the
water. At that point, you'll
have a mess on your hands,
cutting and refitting pipes.
Here's a tip from master
plumber Les Zell. Go ahead
and wrap Teflon tape around
the male threads just like
always. Then add pipe thread
sealant as shown. The sealant
will fill any gaps caused by
tape failures. It's cheap insurance
against a leak. Les says
he's never had a leak since he
started adding this second step.
Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration.
Avoid last-minute shopping trips by having all your materials ready ahead of time. Here's a list.
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