DIY: Replacing a Sink Basket Strainer – A Step-by-Step Guide
Is your kitchen sink constantly clogged? Does your sink basket strainer leak, causing water damage under your cabinet? Don’t panic! Replacing a sink basket strainer is a relatively simple plumbing task that most homeowners can tackle themselves with a few basic tools and a bit of patience. This comprehensive guide will walk you through each step of the process, from identifying the right replacement to tightening that final nut.
Why Replace Your Sink Basket Strainer?
Before we dive into the how-to, let’s quickly cover why you might need to replace your sink basket strainer in the first place. Common reasons include:
* **Leaks:** Leaks are the most frequent culprit. They can stem from corroded gaskets, cracked strainer bodies, or loose connections. Ignoring leaks can lead to water damage, mold growth, and potentially expensive repairs.
* **Clogging:** While occasional clogs can be cleared with a plunger or drain cleaner, persistent clogs despite regular maintenance often indicate a problem with the strainer itself. Debris buildup, corrosion, or damage to the strainer basket can restrict water flow.
* **Corrosion:** Over time, especially in areas with hard water, sink basket strainers can corrode. This weakens the metal, making it prone to leaks and breakage.
* **Physical Damage:** Dropping heavy objects into the sink can crack or dent the strainer basket or its components, compromising its functionality.
* **Age:** Like any plumbing fixture, sink basket strainers have a lifespan. After many years of use, they may simply wear out and need replacement.
Tools and Materials You’ll Need
Gathering your tools and materials before you begin will make the replacement process much smoother. Here’s a list of what you’ll need:
* **New Sink Basket Strainer:** This is the most important item. Be sure to purchase a strainer that’s compatible with your sink (stainless steel is a durable and rust-resistant option). Take your old strainer with you to the hardware store to ensure a proper fit.
* **Basin Wrench (or Adjustable Pliers):** A basin wrench is designed to reach those hard-to-access nuts under the sink. Adjustable pliers can work in a pinch, but a basin wrench is highly recommended.
* **Pliers (Regular):** For gripping and manipulating smaller parts.
* **Screwdriver (Phillips and/or Flathead):** You may need a screwdriver to loosen or tighten screws on the old strainer.
* **Putty Knife or Scraper:** For removing old plumber’s putty.
* **Plumber’s Putty:** This creates a watertight seal between the strainer flange and the sink basin.
* **Teflon Tape (Plumber’s Tape):** For sealing threaded connections.
* **Bucket:** To catch water and debris.
* **Rags or Towels:** For cleaning up spills and drying surfaces.
* **Safety Glasses:** To protect your eyes from debris.
* **Gloves:** To protect your hands.
* **Penetrating Oil (e.g., WD-40):** Optional, but helpful for loosening stubborn nuts.
* **Flashlight or Headlamp:** To improve visibility under the sink.
Step-by-Step Instructions: Replacing Your Sink Basket Strainer
Now that you’ve gathered your tools and materials, let’s get started! Follow these detailed steps carefully to ensure a successful replacement.
**1. Prepare the Work Area:**
* **Clear the Under-Sink Cabinet:** Remove everything from under the sink to give yourself plenty of room to work. This includes cleaning supplies, trash cans, and anything else that might get in the way.
* **Protect the Area:** Place a bucket under the sink to catch any water that may spill. Cover the floor with rags or towels to protect it from drips and debris.
* **Turn Off the Water Supply:** Locate the shut-off valves for both the hot and cold water lines under the sink. Turn them clockwise until they are completely closed. If you don’t have shut-off valves, you’ll need to turn off the main water supply to your house.
* **Disconnect the Drain Pipes:** Carefully disconnect the drain pipes (P-trap and tailpiece) connected to the old sink basket strainer. Loosen the slip nuts using pliers or a basin wrench. Have the bucket ready to catch any residual water in the pipes. Clean the drain pipes thoroughly to remove any debris.
**2. Remove the Old Sink Basket Strainer:**
* **Loosen the Mounting Nut:** This is the large nut located underneath the sink that holds the strainer assembly in place. Use a basin wrench to loosen the nut. This can be tricky, as the nut may be corroded or tightly secured. If the nut is stuck, try applying penetrating oil (WD-40) and letting it sit for a few minutes before attempting to loosen it again.
* **Remove the Other Components:** Once the mounting nut is loose, remove the other components of the strainer assembly, including the friction ring, cardboard or rubber washer, and any other locking mechanisms.
* **Push the Strainer Upward:** With all the hardware removed from underneath, carefully push the old sink basket strainer upward from below the sink. It may be stuck to the sink basin with old plumber’s putty.
* **Remove the Old Putty:** Use a putty knife or scraper to carefully remove all traces of the old plumber’s putty from around the sink drain opening. Ensure the surface is clean and smooth. A clean surface is crucial for a proper seal with the new strainer.
**3. Install the New Sink Basket Strainer:**
* **Prepare the Strainer Flange:** Roll a rope of plumber’s putty about 1/2 inch thick and long enough to encircle the underside of the new strainer flange (the part that sits in the sink). Press the putty firmly onto the flange, ensuring it’s evenly distributed.
* **Insert the Strainer:** Carefully insert the new sink basket strainer into the drain opening from above. Press down firmly to ensure the putty makes good contact with the sink basin.
* **Assemble the Under-Sink Components:** From underneath the sink, slide the cardboard or rubber washer, friction ring (if applicable), and mounting nut onto the strainer tailpiece. Tighten the mounting nut by hand until it’s snug.
* **Position the Strainer:** Make sure the strainer is properly aligned and centered in the sink basin. Remove any excess putty that squeezes out from under the flange.
* **Tighten the Mounting Nut:** Use a basin wrench to tighten the mounting nut securely. Don’t overtighten, as this could crack the sink basin or damage the strainer. Aim for a snug fit that creates a watertight seal. Check the alignment again after tightening.
**4. Reconnect the Drain Pipes:**
* **Reattach the Tailpiece and P-Trap:** Reconnect the tailpiece and P-trap to the new sink basket strainer. Tighten the slip nuts securely by hand, then use pliers to give them a final, gentle tightening. Be careful not to overtighten, as this can damage the plastic pipes.
* **Wrap Threads with Teflon Tape (if applicable):** If any of the drain pipe connections have threaded fittings, wrap the threads with Teflon tape before reconnecting them. This helps create a watertight seal.
**5. Test for Leaks:**
* **Turn On the Water Supply:** Slowly turn the water supply valves back on. Check for leaks around the strainer flange, the mounting nut, and the drain pipe connections.
* **Run Water:** Run water into the sink and observe for any leaks. Pay close attention to the area around the strainer and the drain connections.
* **Tighten Connections (if needed):** If you find any leaks, carefully tighten the corresponding connections. A quarter-turn is often enough to stop a leak. Avoid overtightening.
* **Repeat Testing:** Continue testing for leaks until you are confident that all connections are watertight.
**6. Clean Up:**
* **Remove Excess Putty:** Clean up any excess plumber’s putty from around the strainer flange.
* **Dry the Area:** Dry any wet surfaces under the sink with rags or towels.
* **Replace Items in the Cabinet:** Return all items to the under-sink cabinet.
Troubleshooting Tips
Even with careful preparation and execution, you might encounter some challenges during the sink basket strainer replacement process. Here are some troubleshooting tips to help you overcome common problems:
* **Stuck Mounting Nut:** If the mounting nut is stuck, try these methods:
* **Penetrating Oil:** Apply penetrating oil (WD-40) and let it soak for at least 30 minutes, or even overnight.
* **Heat:** Use a heat gun (on a low setting) to warm the nut. This can help loosen corrosion.
* **Basin Wrench Extension:** Use a pipe or wrench extension to increase the leverage of your basin wrench.
* **Nut Splitter:** As a last resort, you can use a nut splitter to break the nut apart. However, be careful not to damage the strainer tailpiece.
* **Leaks After Installation:** If you experience leaks after installing the new strainer, try these solutions:
* **Tighten Connections:** Double-check all connections and tighten them slightly. Be careful not to overtighten.
* **Reapply Plumber’s Putty:** If the leak is around the strainer flange, remove the strainer, clean the surfaces, and reapply plumber’s putty.
* **Check Washers:** Ensure that all washers are properly positioned and in good condition. Replace any damaged washers.
* **Teflon Tape:** Wrap Teflon tape around threaded connections to improve the seal.
* **Drain Clogging:** If the drain clogs soon after installing the new strainer, check for these issues:
* **Debris in Drain Pipes:** Make sure the drain pipes are clear of debris before reconnecting them.
* **Strainer Basket Debris:** Clean the strainer basket regularly to prevent buildup.
* **Partially Closed Shut-Off Valve:** Ensure the shut-off valves are fully open.
Choosing the Right Sink Basket Strainer
Selecting the appropriate sink basket strainer is crucial for a long-lasting and trouble-free installation. Consider these factors when choosing a replacement:
* **Material:** Stainless steel is the most popular choice due to its durability, corrosion resistance, and attractive appearance. Brass is another option, but it can be more expensive.
* **Size:** Ensure the strainer is the correct size for your sink drain opening. Measure the diameter of the opening before purchasing a replacement.
* **Type:** There are several types of sink basket strainers:
* **Standard Strainer:** A basic strainer with a removable basket to catch debris.
* **Deep Cup Strainer:** Features a deeper cup for catching more debris and preventing clogs.
* **Garbage Disposal Strainer:** Designed specifically for use with garbage disposals. It has a larger opening and a different type of locking mechanism.
* **Lift-and-Turn Strainer:** Has a lever that lifts and turns to open and close the drain.
* **Features:** Consider features such as a removable basket for easy cleaning, a stopper to prevent water from draining, and a durable construction.
* **Brand Reputation:** Choose a strainer from a reputable brand known for quality and reliability. Read reviews from other customers to get an idea of their experiences.
Maintenance Tips to Prolong the Life of Your Sink Basket Strainer
Once you’ve replaced your sink basket strainer, proper maintenance is essential to prolong its lifespan and prevent future problems. Here are some helpful tips:
* **Regular Cleaning:** Clean the strainer basket regularly to remove food particles and debris. This will prevent clogs and odors.
* **Avoid Harsh Chemicals:** Avoid pouring harsh chemicals, such as drain cleaners, down the drain, as they can damage the strainer and pipes.
* **Flush with Hot Water:** Regularly flush the drain with hot water to help dissolve grease and prevent buildup.
* **Use a Strainer Basket:** Always use a strainer basket to catch food scraps and other debris. This will prevent them from entering the drain and causing clogs.
* **Avoid Dropping Heavy Objects:** Be careful not to drop heavy objects into the sink, as this can damage the strainer.
* **Check for Leaks Regularly:** Periodically check for leaks around the strainer and drain connections. Address any leaks promptly to prevent water damage.
When to Call a Professional Plumber
While replacing a sink basket strainer is a DIY-friendly task, there are certain situations where it’s best to call a professional plumber. These include:
* **Extensive Corrosion:** If the drain pipes are heavily corroded or damaged, it’s best to have a plumber assess the situation and make necessary repairs.
* **Difficulty Removing the Old Strainer:** If you’re unable to remove the old strainer despite your best efforts, a plumber has the tools and expertise to handle the job safely and efficiently.
* **Persistent Leaks:** If you’ve tried troubleshooting leaks without success, a plumber can diagnose the problem and provide a professional solution.
* **Lack of Plumbing Experience:** If you’re not comfortable working with plumbing, it’s always best to err on the side of caution and hire a professional.
* **Complicated Plumbing System:** If your plumbing system is complex or has unusual configurations, a plumber can ensure the replacement is done correctly.
Conclusion
Replacing a sink basket strainer is a manageable DIY project that can save you money and prevent further plumbing problems. By following these detailed steps and taking the necessary precautions, you can successfully replace your strainer and enjoy a leak-free and functional kitchen sink. Remember to choose the right replacement strainer, gather your tools and materials, and take your time to ensure a proper installation. If you encounter any difficulties or are unsure about any step, don’t hesitate to consult a professional plumber. Happy plumbing!