The key to a proper sink drain installation is using plumber’s putty on a sink drain. Though without proper training, it can be difficult to know how to use plumber’s putty. As a top plumber in Colorado Springs, One Source Home Services has created a guide for properly applying plumber’s putty. In this article, we will outline the process of applying plumber’s putty to a sink drain.
What Is Plumber’s Putty and Why Is It Used for Sink Drains?
Plumber’s putty is a compound made of clay and usually linseed oil. When you tighten a drain assembly into your sink, there’s always a small gap between the metal drain flange and the sink surface. Plumber’s putty fills this gap and, when used properly, stays soft, allowing you to remove it or manipulate it.
When To Use Plumber’s Putty vs. Silicone for Sealing Drains
Plumber’s putty is only a temporary fix that stays pliable, unlike caulking or adhesive sealants. If you ever need to remove the drain for cleaning or replacement, the putty comes off easily. It’s your best bet for standard sink drains because it doesn’t bond to surfaces, so you’re not committed forever.
Silicone is the best for a permanent seal, as it bonds to the surface. It can be removed, but it takes way more work and headache than plumber’s putty.
What You’ll Need Before Applying Plumber’s Putty
There are a few tools to grab before we learn how to apply plumber’s putty. Be sure to have:
- Pipe Wrench
- Bucket
- Putty Knife
- Cloth
- Rag
- Plumber’s putty (Oatey and Hercules are the best plumber’s putty brands)
Step-by-Step Guide To Applying Plumber’s Putty on a Sink Drain
Below, we will summarize how to install a sink drain with plumber’s putty:
- Step one: Turn off the water by turning off the valves below the sink or by turning off the main water supply to the entire house. Doing so will help prevent any accidental water sprays.
- Step two: Position a bucket beneath the P-pipe and begin disassembling the drain pipe. Loosen the nuts that connect the pipes to the drain with your pipe wrench. Do the same thing with the strainer pipe as the base of the sink. Make sure to let out any debris or excess water from your bucket.
- Step three: Once everything is loosened, you’ll be able to remove the base of the pipe from the sink. Make sure to remove extra debris and wipe everything dry.
- Step four: Remove a section of putty from its container and rub it between your hands to warm it for molding. The more you run it between your hands, the more malleable it becomes.
- Step five: Roll the putty between your palms like you’re making a snake from clay. You want to create a rope about half an inch thick and long enough to wrap around the underside of your drain flange in one continuous loop.
- Step six: Place putty into the drain gap and work your way around in a complete circle, making sure the putty rope overlaps slightly where the ends meet. Press it gently but firmly so it stays in place.
- Step seven: With the putty securely in place, reinstall the pipe. The sealing action will occur right away as the pipe reconnects with the basin or another pipe.
- Step eight: Spread the putty at the seam to ensure an even, tight seal. Dry the surrounding surface with a towel or rag, and you’re ready to use the sink again.
How To Ensure a Watertight Seal with Plumber’s Putty
First, you need to use enough putty. Using too little is one of the most common causes of leaks. If putty squeezes out when you tighten the drain, that’s a good sign. If nothing squeezes out, you probably didn’t use enough.
The putty rope should be the same thickness as you roll it. Take an extra thirty seconds to roll a nice, even rope, and you’ll save yourself headaches.
Make sure the surface area is clean and dry before applying the putty. Even after wiping it with a cloth rag, let it air dry for a few minutes so it’s bone dry.
How Long Should Plumber’s Putty Sit Before Use
How long does plumber’s putty take to dry? We recommend letting the plumber’s putty sit for a few hours (two to three) before you use the sink. You can even stretch this overnight, which gives the putty time to expand and compress fully and settle into all the tiny gaps.
After your waiting period, run the water gradually by starting with just the faucet running normally. Check underneath for any drips, and if you don’t see any, you did a good job.
Common Mistakes To Avoid When Using Plumber’s Putty
Below are some common mistakes when learning how to seal a sink drain:
- Using it on the wrong material: Never use plumber’s putty on plastic, marble, or granite. It will stain and even break down plastic over time.
- Not cleaning old putty off: If you notice old putty along the sink drain, make sure to clean it off before applying newer putty. Not all putties mix.
- Over-tightening: After the putty is set, only tighten the drain until you feel resistance. Then, only tighten another quarter turn. You don’t want to burst the seal and create a plumbing emergency.
How To Remove and Reapply Old Plumber’s Putty
Once you remove the drain assembly and see the old putty, it’s usually quite easy to remove. If the putty is still soft, wipe it away with a rag or paper towel. If it’s a bit hard, use a putty knife or an old credit card to chip away at it. Don’t use a tool that can scratch the drain assembly.
Get the surface completely clean and dry, then use rubbing alcohol to ensure it is free of dirt or debris. Then follow the above step-by-step guide to apply the new plumber’s putty. Again, don’t apply new putty on old putty.
Does Plumber’s Putty Harden or Stay Soft Over Time
If applied properly, plumber’s putty never hardens on the sink drain. It remains pliable and easy to clean off. However, if plumber’s putty is stored incorrectly or left outside of a properly sealed container, it can harden and become brittle. Putty also becomes hard when it’s cold, so store it in a room-temperature location.
Troubleshooting Leaks After Installing a Sink Drain
If you discover leaks after installing the sink drain, don’t panic. Most leaks are pretty easy to fix. Turn off the water again and assess your work. Is the water seeping from around the drain flange where it meets the sink? That’s a putty seal issue, for sure. Make sure it’s got a good seal — if not, reapply it and add more.
If it’s dripping from the locknut or P-trap connections, then that may be a different problem entirely that needs a professional plumber.
Proper Maintenance for Long-Lasting Drain Seals
To keep your plumber’s putty working, follow these tips:
- Avoid harsh chemical drain cleaners
- Use soft cloths and non-abrasive sponges for cleaning
- Periodically check for leaks
Call One Source Home Service for Professional Plumbing Help
Contact One Source Home Service today to schedule an inspection, repair, or replacement of your home’s equipment by certified local Colorado Springs experts. One Source will deliver 5-star-rated solutions for your home’s heater, air conditioner, plumbing, and electrical systems.
