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Tub spout copper pipe too long.
The faster just as appropriate but may not look that good repair is to apply enough caulking into the gap so that it can be smoothed flush with the spout.
Smsplumbing md the pipe looks to be soldered but your spout is still on so its hard to see the side that is in the spout.
To use the threaded adapter measure from the shoulder of the existing adapter to the wall.
Reduce that measurement by 1 5 inches and cut the pipe there.
Total the two and add 1 4 inch.
Refer to the manufacturer s specifications prior to purchasing and installing to ensure you have the appropriate length for your spout.
The result is the overall length of the pipe you need.
Solder on a new adapter.
Measure the length of your tub spout from the back edge of the spout to the front where the threads start on the inside of the spout.
Tub spout nipple too long after remodel.
You need to un screw the spout and the pipe nipple.
Idreos md i replaced a bath tub spout with a danco spout made to replace the old moen spout.
Cut a piece out of the copper pipe 1 long.
Use teflon tape on all male pipe threads and caulking behind the spout base.
Replace with a shorter nipple equal to the gap measurement.
Then measure the distance from the surface of the wall to the back of the threaded elbow inside the wall.
Well you have a choice.
If it is copper inside the spout cut the male adapter off and buy the slip on spout.
Everything else is new.
That means with the tile you can no longer reach the threads in the spout.
First figure how short you are let s say you re 3 8 shy of making a connection.
For slip on tub spouts your copper pipe should be a minimum 1 and a maximum 2 7 8 in length depending on the tub spout.
Now cut another piece of 1 2 copper 1 3 8 long you may now solder the piece in using two couplings or two sharkbite connectors.
In my opinion i would have replaced the whole faucet.