Plumbing Blog

Is Your Sillcock Leaking?

Outdoor Faucets in TacomaA frost free leaky outdoor faucet, (also known as a sillcock or spigot) is not just annoying; it can cost you a small fortune in water bills if left unchecked. In addition, a leaky outdoor faucet can also cause damage to your Tacoma home and yard.

Fortunately, for even a novice do-it-yourselfer, a leaky outdoor faucet can frequently be fixed with just a few basic tools and about 30 minutes.

Identify Source of Outdoor Faucet Leak

The first thing you need to do is to determine where the outdoor faucet leak is coming from.

First check to see if the leak is occurring around the top cap that sits just back behind the handle. Inevitably this cap becomes loose on frost free outdoor faucet and all you need to do is simply tighten it back up using your hand. Overtime this cap becomes loose due to changes in seasonal temperatures or simply from frequent use of the faucet.

Next, check to see if it is leaking directly out the spout itself.

If the leak is occurring from the faucet spout, even after you have confirmed the handle is fully turned to the closed position, then chances are there is a failed washer sitting back behind the faucet handle.

Disassembling the Outdoor Faucet

To replace the washer, first turn the water off to the outdoor faucet. Usually the shut off valve to the outdoor spigot can be found inside your Tacoma home, for example in a utility room just behind the outdoor faucet. The shut off valve may also be located in the basement.

Next, turn the outdoor faucet to the full on position to relieve any pressure in it and to allow the water to fully drain from the faucet.

Now, using a screwdriver remove the screw that holds the handle onto the faucet.

With the screw removed, pull the handle off.

After removing the faucet handle, use a wrench to remove the faucet nut that sits back behind the handle.

Replace Washer and Clean Internal Faucet Area

Typically it is the washer that sits behind the faucet nut (sillcock nut) that fails. Remove it with your fingers or small screw driver and examine it for damage or wear. If you see either, replace the washer. Also, make sure the internal faucet (sillcock) is free from dirt and grime. If there is grime in it, flush it out with water.

Re-assemble Outdoor Faucet

Once you have replaced the washer and the internal faucet area is free of any grit, reattach the faucet nut cap, the handle, and the screw that holds the handle onto the faucet.

Test Repaired Outdoor Faucet

Turn the water back on at the valve within the basement or utility room to the outdoor faucet and observe water flowing freely from the faucet.

Turn the handle to the off position. If the washer or grit was the problem the leak should no longer be present.

Note that with a frost free outdoor water faucet, the actual shutoff valve sits far back into the faucet / sillcock pipe, (approximately 8 inches), so do not be surprised to see a few drips of water initially after shutting off the faucet. After a few minutes, however, you should see no more drips. With that your leaky outdoor faucet is a thing of the past!

If performing these steps doesn’t take care of the leak, you should call your Tacoma plumber who will be able to readily identify the source of the leak and repair it for you in no time.


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