Make sure you have new parts available
The first step for bathtub faucet repair is to make sure you have the new parts that you need. You can fix most bathtub plumbing problems with the replacement parts available at hardware stores and home centers. A plumbing parts distributor will carry a much larger selection and may be able to special-order hard-to-find items. There are thousands of different faucet replacement parts available to fix a leaky bathtub faucet, so bring your old parts to the store for a proper match to fix a leaky bathtub faucet. If your valve is highly corroded or the finish is wearing off, replace the entire faucet. Save money by doing simple plumbing repairs yourself. These plumbing fixes are completely DIY with basic tools and skills.
Disassemble the faucet: Pry off the handle insert
Removing the faucet handle is the toughest part of the job. Over time, corrosion can virtually weld the handle to the stem. Shut off the water supply to the faucet and open the valves to drain excess water from the system. Pry off the handle insert with the thin blade of a pocketknife.
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