DIY: How to Change a Bathtub Faucet Like a Pro

Changing a bathtub faucet might seem like a daunting task, but with the right tools and a bit of patience, it’s a DIY project that can save you a significant amount of money. This comprehensive guide will walk you through each step, from identifying the type of faucet you have to installing the new one and testing for leaks. Let’s dive in!

Why Change Your Bathtub Faucet?

There are several reasons why you might want to change your bathtub faucet:

* **Leaky Faucet:** A constantly dripping faucet can waste a significant amount of water and increase your water bill.
* **Outdated Style:** Replacing an old, worn-out faucet can instantly update the look of your bathroom.
* **Corrosion or Damage:** Over time, faucets can corrode or become damaged, affecting their functionality and appearance.
* **Improved Water Flow:** A new faucet might offer better water flow or pressure compared to your old one.

Tools and Materials You’ll Need

Before you start, gather the necessary tools and materials:

* **New Bathtub Faucet:** Choose a faucet that matches your existing plumbing configuration (more on this later).
* **Adjustable Wrench:** For loosening and tightening nuts and connections.
* **Basin Wrench (Optional):** Useful for reaching nuts in tight spaces, especially behind the tub.
* **Screwdrivers (Phillips and Flathead):** For removing screws and handles.
* **Pliers:** For gripping and turning small parts.
* **Plumber’s Tape (Teflon Tape):** For sealing threaded connections.
* **Plumber’s Putty:** For sealing around the base of the faucet.
* **Penetrating Oil (e.g., WD-40):** To loosen stubborn nuts and bolts.
* **Bucket or Bowl:** To catch any remaining water in the pipes.
* **Rags or Towels:** To clean up spills and protect surfaces.
* **Flashlight:** To illuminate dark areas under the sink or behind the tub.
* **Gloves:** To protect your hands.
* **Safety Glasses:** To protect your eyes from debris.
* **Valve Stem Socket Set (Optional):** If you need to remove or replace the valve stems.
* **Hacksaw or Pipe Cutter (Potentially):** Only if you need to cut any pipes (usually not necessary).

Understanding Different Types of Bathtub Faucets

Choosing the right replacement faucet requires understanding the different types available:

* **Two-Handle Faucet:** Features separate handles for hot and cold water. These can be widespread (handles are separate from the spout) or center-set (handles and spout are closer together).
* **Single-Handle Faucet:** Controls both temperature and water flow with a single lever.
* **Wall-Mounted Faucet:** The faucet is mounted directly onto the wall, rather than on the tub deck.
* **Deck-Mounted Faucet:** The faucet is mounted on the tub deck (the flat surface surrounding the tub).
* **Roman Tub Faucet:** A type of deck-mounted faucet with a higher spout and often separate handles.
* **Freestanding Tub Faucet:** Designed for freestanding tubs, these faucets typically stand on the floor beside the tub.

**Important:** Before buying a new faucet, examine your existing faucet and the connections to determine the type and the number of holes drilled in your tub deck or wall. Count the number of holes for handles and the spout. Measure the distance between the center of the hot and cold water inlets; this is important for widespread faucets.

Step-by-Step Guide to Changing Your Bathtub Faucet

Now, let’s get to the actual replacement process. Follow these steps carefully:

Step 1: Turn Off the Water Supply

This is the most crucial step. Locate the shut-off valves for your bathtub. They are usually located in one of the following places:

* **Under the Sink:** If your bathroom sink is adjacent to the tub, the shut-off valves might be located there.
* **Behind an Access Panel:** Some tubs have an access panel on the wall behind the faucet. Look for a small door or panel that can be removed.
* **In the Basement or Crawl Space:** If you can’t find them in the bathroom, check the basement or crawl space directly below the bathroom. Look for the main water line and trace it to find individual shut-off valves.

If you can’t find individual shut-off valves, you may need to turn off the main water supply to your entire house. Make sure to inform everyone in the household before doing so.

Once you’ve located the shut-off valves, turn them clockwise until they are completely closed. After turning off the water, turn on the existing faucet to relieve any remaining pressure in the pipes. Allow any remaining water to drain out.

Step 2: Protect the Bathtub Surface

Before you start working, protect the surface of your bathtub from scratches or damage. Place a towel or drop cloth over the tub around the faucet area. This will also prevent any dropped tools from causing damage.

Step 3: Remove the Old Faucet Handles

The method for removing the handles will vary depending on the type of faucet you have.

* **Handles with Visible Screws:** Look for screws on the front or side of the handles. Use the appropriate screwdriver (Phillips or flathead) to remove the screws. Once the screws are removed, you should be able to pull the handles straight off.
* **Handles with Hidden Screws:** Some handles have a decorative cap or cover that conceals the screws. Use a small flathead screwdriver or a knife to gently pry off the cap. Once the cap is removed, you’ll find the screw underneath. Remove the screw and pull off the handle.
* **Handle-less Faucets:** Some newer faucets have handles that twist or pull off directly, without any visible screws. Check the manufacturer’s instructions for specific details on how to remove these types of handles.

If the handles are stuck, try spraying them with penetrating oil (WD-40) and letting it sit for a few minutes before attempting to remove them again.

Step 4: Disconnect the Water Supply Lines

This is where your adjustable wrench (and potentially the basin wrench) will come in handy. Locate the water supply lines connected to the faucet under the tub deck or behind the wall (depending on the type of faucet). These lines are usually made of copper or flexible braided stainless steel.

Use the adjustable wrench to loosen the nuts connecting the water supply lines to the faucet. Turn the wrench counterclockwise to loosen the nuts. Be prepared for a small amount of water to spill out, so have your bucket and rags ready.

If the nuts are difficult to loosen, try spraying them with penetrating oil and letting it sit for a few minutes. If you’re using a basin wrench, make sure it’s properly positioned on the nut before applying pressure.

Once the nuts are loose, carefully disconnect the water supply lines from the faucet. Inspect the ends of the lines for any damage or corrosion. If the lines are damaged, you may need to replace them.

Step 5: Remove the Old Faucet Spout

Again, the method for removing the spout will depend on the type of faucet.

* **Spout with a Set Screw:** Some spouts are held in place by a set screw located on the underside of the spout, near the base. Use an Allen wrench or a small screwdriver to loosen the set screw. Once the set screw is loose, you should be able to pull the spout straight up and off.
* **Spout that Screws On:** Other spouts simply screw onto a threaded pipe. In this case, grip the spout firmly and turn it counterclockwise to unscrew it. You may need to use pliers for a better grip, but be careful not to scratch the spout.
* **Spout Connected with a Coupling Nut:** Some spouts are connected to the plumbing with a coupling nut. Use your adjustable wrench to loosen the coupling nut, and then carefully remove the spout.

If the spout is stuck, try spraying it with penetrating oil and letting it sit for a few minutes before attempting to remove it again.

Step 6: Clean the Area

Once you’ve removed the old faucet, thoroughly clean the area around the faucet holes. Remove any old plumber’s putty, caulk, or debris. Use a scraper or putty knife to remove stubborn residue. Clean the surface with a damp cloth and allow it to dry completely.

Step 7: Install the New Faucet

Now it’s time to install the new faucet. Follow the manufacturer’s instructions carefully, as the installation process may vary slightly depending on the faucet model.

Here are some general guidelines:

* **Apply Plumber’s Putty:** Roll a rope of plumber’s putty and apply it to the underside of the faucet base where it will contact the tub deck. This will create a watertight seal.
* **Insert the Faucet:** Carefully insert the faucet into the holes in the tub deck. Make sure the faucet is properly aligned and centered.
* **Attach the Mounting Hardware:** From underneath the tub deck, attach the mounting hardware that came with the faucet. This usually consists of nuts, washers, and mounting brackets. Tighten the nuts securely, but don’t overtighten them, as this could damage the tub deck.
* **Connect the Water Supply Lines:** Wrap plumber’s tape (Teflon tape) around the threads of the water supply lines. This will help create a watertight seal. Connect the water supply lines to the faucet, tightening the nuts with your adjustable wrench. Again, don’t overtighten them.
* **Install the Handles:** Attach the new faucet handles, following the manufacturer’s instructions. Tighten the screws or caps securely.
* **Install the Spout:** Attach the new spout, following the manufacturer’s instructions. Make sure it’s properly aligned and tightened.

Step 8: Test for Leaks

After installing the new faucet, it’s crucial to test for leaks. Slowly turn the water supply back on, starting with a small amount of pressure. Check all the connections for leaks. Look for water dripping from the faucet base, the water supply lines, and the spout.

If you find any leaks, immediately turn off the water supply and tighten the connections. You may need to reapply plumber’s tape or plumber’s putty to create a better seal. Once you’ve tightened the connections, turn the water supply back on and check for leaks again.

Continue this process until you’ve eliminated all leaks.

Step 9: Final Touches

Once you’re satisfied that there are no leaks, clean up any remaining mess. Remove any excess plumber’s putty or caulk. Wipe down the faucet and the surrounding area with a clean cloth.

Troubleshooting Common Problems

* **Stuck Nuts or Bolts:** If you encounter stubborn nuts or bolts, apply penetrating oil and let it sit for a few minutes. You can also try using a cheater bar (a pipe or wrench extension) to increase your leverage. Be careful not to damage the pipes or fittings.
* **Stripped Screws:** If you strip a screw head, try using a screw extractor to remove it. You can also try using a rubber band or steel wool between the screwdriver and the screw head to get a better grip.
* **Leaky Connections:** If you have leaky connections, make sure you’ve properly applied plumber’s tape and tightened the nuts securely. You may also need to replace the water supply lines or fittings if they are damaged.
* **Low Water Pressure:** If you experience low water pressure after installing the new faucet, check the aerator for debris. You may need to clean or replace the aerator.

Tips for Success

* **Read the Instructions:** Always read the manufacturer’s instructions carefully before starting the installation. This will help you avoid mistakes and ensure that you install the faucet correctly.
* **Take Your Time:** Don’t rush the installation process. Take your time and pay attention to detail. This will help you avoid mistakes and ensure a professional-looking result.
* **Have the Right Tools:** Make sure you have all the necessary tools before you start the installation. This will save you time and frustration.
* **Don’t Be Afraid to Ask for Help:** If you’re not comfortable with any part of the installation process, don’t be afraid to ask for help from a friend, family member, or professional plumber.

Choosing the Right Faucet Finish

Beyond the type of faucet, consider the finish. Common options include:

* **Chrome:** Durable, affordable, and easy to clean.
* **Brushed Nickel:** Resists fingerprints and water spots, offering a softer, warmer look than chrome.
* **Oil-Rubbed Bronze:** Provides a rustic or traditional aesthetic.
* **Matte Black:** A contemporary and stylish choice.
* **Polished Brass:** A classic and elegant look.

Consider the existing hardware in your bathroom (light fixtures, cabinet pulls, etc.) and choose a faucet finish that complements it.

Upgrading Your Showerhead

While you’re changing your bathtub faucet, it’s a great opportunity to upgrade your showerhead as well. A new showerhead can improve your showering experience and save water. Consider these options:

* **Standard Showerhead:** The most common type, offering a basic spray pattern.
* **Rainfall Showerhead:** Provides a gentle, widespread spray that mimics rainfall.
* **Handheld Showerhead:** Offers flexibility and convenience, allowing you to direct the water where you need it.
* **Low-Flow Showerhead:** Designed to conserve water without sacrificing performance.

Maintaining Your New Faucet

To keep your new faucet looking and functioning its best, follow these maintenance tips:

* **Clean Regularly:** Clean the faucet regularly with a mild soap and water solution. Avoid using harsh chemicals or abrasive cleaners, as these can damage the finish.
* **Remove Water Spots:** To remove water spots, wipe the faucet with a soft cloth dampened with white vinegar.
* **Lubricate Moving Parts:** Periodically lubricate the moving parts of the faucet (such as the handles and spout) with a silicone-based lubricant.
* **Check for Leaks:** Regularly check for leaks and address them promptly.

When to Call a Professional

While changing a bathtub faucet is a DIY project that many homeowners can handle, there are times when it’s best to call a professional plumber:

* **If you’re not comfortable with plumbing work.**
* **If you encounter any unexpected problems.**
* **If you’re not able to shut off the water supply.**
* **If you suspect there is a problem with your plumbing system.**
* **If you’re dealing with old or corroded pipes.**

A licensed plumber has the expertise and experience to handle complex plumbing issues and ensure that the job is done correctly.

Conclusion

Changing a bathtub faucet is a rewarding DIY project that can save you money and improve the look and functionality of your bathroom. By following these steps and taking your time, you can successfully replace your old faucet with a new one and enjoy a leak-free and stylish bathing experience. Remember to prioritize safety, read the instructions carefully, and don’t hesitate to seek professional help if needed. Good luck!