Another common problem on outside spigots is leaking around the valve stem when the water is turned on.
Outside faucet leaking behind siding.
The faucet is about 12 long and is usually screwed into a threaded fitting in the supply line and you have to use two wrenches on the connection point.
If a leak develops.
Unscrew and remove the handle with a phillips screwdriver then loosen the retaining nut under the handle with adjustable pliers and pull.
Go outside once more and screw the faucet to the siding.
Turn off the water to the exterior faucet by locating the valve inside the house and closing it or the main water valve.
E plumber ny if the water is actually dripping from behind the siding and running down the wall there s a good chance that you have a frost free hose bibb and there may be a defect in it behind the wall and the slightest bit of back pressure when a garden hose is connected is causing the leak to show up.
Buy a repair kit that matches your faucet brand and use the packing from the kit.
One to hold the fitting to prevent it from twisting as you apply the other to unscrew the faucet.
You have to have access to where the faucet is attached to the water supply inside the house.
Sometimes in the spring when you first turn on the water to your outdoor faucet you may find that it s leaking.
Outside faucet leaking when hose is on author.
The good news is that both of these problems can often be easily fixed simply by tighten the packing nut behind the handle 1 8 to 1 4 turn.
Exterior faucets are hot spots for hidden leaks because the faucet connects to a water pipe just beneath the siding a place where it s difficult to make a secure connection.
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If your faucet still leaks the stem may be leaking and you should replace the faucet.
We suspect that that top j channel trip at the gable end protrudes past the gable board and is not sealed.