Sofia Martinez
Installing a plastic sink strainer is a simple DIY task that can be completed in a few steps. It is important to be aware of common mistakes, such as over-tightening, which can cause cracking, and choosing low-quality components that may fail prematurely. Before beginning the installation, ensure you have chosen an appropriate sealing method, such as plumber's putty or silicone sealant, and that the sink hole is thoroughly cleaned and dried. The process involves removing the old strainer, assembling the new strainer with the correct sequence of components, and securely tightening the strainer in place. By taking the time to properly install your sink strainer, you can ensure a leak-free and long-lasting result.
| Characteristics | Values |
|---|---|
| Mistakes to avoid | Over-tightening, Misalignment, Incorrect assembly order, Insufficient testing, Cheap plastic parts |
| Tools | Screwdrivers, Pliers, Rubber mallet, Propane torch, Channel locks, Pipe wrench, Putty knife |
| Steps | Turn off the water supply, Loosen and remove the faucet tailpiece, Unscrew the locknut, Slip the rubber and metal washers over the strainer neck, Secure the lock nut, Raise and tighten the tailpiece, Reconnect PVC piping, Place a top groove gasket, Hand-tighten the connection, Remove excess putty |
| Sealing options | Plumber's putty, Silicone sealant, Stainless putty |
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What You'll Learn
Choosing the right materials
Plumber's Putty: Plumber's putty is a common choice for sealing the sink strainer. It creates a watertight seal between the strainer and the sink. However, be cautious when using it with plastic sinks, as it can weaken the material. Always check the manufacturer's instructions and use fresh plumber's putty. If you're concerned about staining or have a porous sink material, consider using stainless putty, which is designed for such surfaces.
Silicone Sealant: Silicone is an excellent alternative to plumber's putty, especially for plastic sinks. It forms a strong bond, so expect to use more force during your next replacement. Load the silicone into a caulk gun and apply a small bead to the underside of the basket rim.
Gaskets: Gaskets are essential for preventing leaks. Ensure you have a gasket, such as a top groove gasket or a compression gasket, to place between the end of the strainer and the start of the PVC pipe. If your new strainer comes with a gasket, you might not need additional plumber's putty.
Washers: Both rubber and metal washers are important components. Slip them over the neck of the strainer before securing the lock nut. The rubber washer provides a tight seal, while the metal washer adds stability and helps distribute pressure evenly.
Lock Nut: The lock nut is what secures the strainer body to the sink. Make sure you have the appropriate size and type of lock nut for your specific strainer model. You may need a pipe wrench to tighten it securely.
Tailpiece: The tailpiece, also known as the flanged tailpiece, is a straight, collared tube that connects to the basket strainer. Ensure you have a new or undamaged tailpiece to attach to your strainer during installation.
Tools: You will likely need some basic tools, such as adjustable pliers, channel locks, a putty knife, and screwdrivers. These tools will help you tighten various components and remove excess putty or old sealant.
By choosing high-quality materials and following manufacturer instructions, you can ensure a durable and leak-free installation for your plastic sink strainer.
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Removing the old strainer
Once the PVC nut is removed, you will need to loosen the metal nut connected to the strainer. Again, use pliers and then your hand to do this. If the strainer is particularly resistant, you may need to use a screwdriver to hold the strainer steady while you loosen the nut. With the nuts removed, the strainer should be free, and you can lift it out of the sink.
At this point, you will need to clean the sink hole thoroughly. Use a clean, soapy sponge or cloth to scrub both sides of the hole, ensuring there is no old sealant or gunk remaining. If there is, a putty knife can help to remove it, and for serious buildup, you may need to use paint thinner or another solvent. Be sure to follow the safety instructions for any products you use.
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Preparing the sink
First, turn off the water supply to your sink faucet. It is important to ensure that the water is completely shut off to avoid any leaks or spills during the installation process. Once the water is turned off, proceed to loosen and remove the faucet tailpiece. You can use a pair of adjustable pliers to loosen the PVC nut connecting the strainer to the drainage pipe, and then continue by hand.
Next, you will need to remove the old sink strainer. Place a bucket under the sink to catch any water or debris that may fall during this process. Unscrew the nut at the base of the basket strainer using a wrench or pliers. If the strainer is rusted into place, you may need to use a rubber mallet to gently pop it out of the sink drainage hole. Be careful not to use excessive force, as it can damage the sink or the new strainer. Once the nut is removed, take out the old basket strainer and any remaining gaskets or washers.
After removing the old strainer, thoroughly clean the sink hole on both sides. Use a clean, soapy sponge or cloth to scrub the area. It is important to get the surface as clean as possible to ensure a good bond with the plumber's putty or silicone sealant. If there is any old sealant or residue, use a putty knife to scrape it off. For stubborn buildup, you may need to use a solvent like paint thinner, always following the product's safety instructions.
Before installing the new strainer, inspect the sink basin for any holes or damage. If there are any holes, repair them to prevent water leakage. Once the sink is clean and dry, you are ready to proceed with the installation of the new plastic sink strainer. Remember to take your time and follow the manufacturer's instructions for the best results.
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Installing the new strainer
Before installing the new strainer, it is important to clean the sink hole thoroughly on both sides. Use a clean, soapy sponge or cloth to scrub the top and bottom of the sink around the empty hole. Get the area as clean as possible so that the plumber's putty can form a good bond. Once you are done, dry the area thoroughly. If there is old sealant or gunk in the area, scrape it off with a putty knife.
Now, you can begin installing the new strainer. Firstly, turn off the water supply to your sink faucet. Then, take some plumber's putty and roll it out into a one-foot length. Wrap this around the base of the new sink strainer to create a seal. Place the strainer into the drainage hole in the sink and press down hard.
From underneath the sink, slip the rubber and metal washers over the neck of the strainer, then secure the lock nut. You might need a 14" pipe wrench to tighten the strainer in place. Be careful not to over-tighten, as this can crack the sink or damage the strainer, especially with plastic components. Raise the tailpiece into place and tighten the coupling nuts.
Finally, reconnect the PVC piping and place a top groove gasket between the end of the strainer and the start of the PVC pipe. Hand-tighten the connection. If applicable, place a second compression gasket on the bottom portion of the PVC pipe to reconnect it to the drain line. Hand-tighten the PVC nut. Be careful not to make it too tight.
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Testing for leaks
Prepare the Testing Environment:
Before running any tests, ensure you have the necessary tools and a clear view of the sink strainer assembly. Depending on the lighting, you may need a flashlight or utility lamp. If you're working alone, use a lamp with a stand to illuminate the area, as you'll need both hands for the testing process. Place a bucket or deep plastic bin under the sink to catch any water that may spill during the testing process.
Initial Leak Test:
Start by running water in the sink and observing all connections for any signs of drips or slow leaks. Pay close attention to the area between the sink and the strainer basket, as this is a common location for leaks. If you notice any leaks, it indicates an issue with the seal.
Disassemble and Inspect:
If leaks are present, begin by disassembling the sink strainer. Loosen the slip nuts from both ends of the tailpiece with water-pump pliers and then remove the tailpiece. Keep the parts in order as you remove them, taking notes or pictures to aid in reassembly. Inspect the individual components for any signs of damage or corrosion, especially the rubber gasket, cardboard washer, and friction ring.
Clean and Reassemble:
Use a plastic putty knife to scrape off any old putty around the drain opening and under the rim of the strainer. Clean both sides of the exposed drain opening with a paper towel dipped in rubbing alcohol to ensure a clean surface for the new seal. Apply a continuous bead of fresh plumber's putty about the diameter of thick yarn to the underside of the drain flange. Reassemble the strainer, referring to your notes or pictures to ensure proper placement of components.
Final Leak Test:
After reassembling the strainer, it's time for the final leak test. Turn on the water and observe the strainer assembly for any signs of leaks. If the strainer is still leaking, it may be necessary to adjust the amount of putty used or consult a professional plumber to identify and resolve the issue.
Remember, it is essential to take your time during the testing and reassembly process to ensure a leak-free and long-lasting installation.
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Frequently asked questions
First, turn off the water supply to your sink faucet. Then, loosen and remove the faucet tailpiece. Next, use a pair of adjustable pliers to loosen the PVC nut connecting the strainer to the drainage pipe. Finish removing the nut by hand, then use pliers and your hand to loosen the metal nut connected to the strainer. If the strainer is rusted in place, use a rubber mallet to pop it out.
Before installing your new strainer, clean the sink hole thoroughly on both sides with a clean, soapy sponge or cloth. Dry it thoroughly, then scrape away any old sealant or gunk with a putty knife. If your new strainer comes with a gasket, you might not need plumber's putty. If not, roll out a "worm" of putty and loop it around the basket flange. Place the new strainer into the drainage hole and press down hard. Slip the rubber and metal washers over the neck of the strainer, then secure the lock nut.
Avoid over-tightening the locknut, as this can crack the sink or damage the strainer. Make sure to align the strainer properly to avoid difficulties connecting the tailpiece and potential leaks. Always follow the correct assembly order of the components (rubber washer, friction ring, locknut). After installation, thoroughly test for leaks by running water and checking all connections for drips or slow leaks. Avoid using cheap plastic parts, as they can crack or lose sealing ability when exposed to hot water.
Pair your strainer with a mesh drain catcher to prevent clogs and food scraps from building up. Regularly check for leaks by inspecting all connections and tightening any loose nuts or washers. If your strainer becomes rusted or damaged, replace it with a new one following the installation steps outlined above.
