Few household issues are as universally frustrating as a slow-draining shower, where water pools around your ankles and threatens to overflow the basin. This common problem is usually the result of a simple clog, a buildup of hair, soap scum, and hard-water minerals that gradually restricts the flow. Fortunately, changing or unclogging a shower drain is a task most homeowners can handle with a bit of patience and the right tools.
Before you rush to the hardware store, it’s important to diagnose the issue correctly. Is the drain simply slow, or is it completely blocked? Does water bubble up through the drain when you run the bathtub, indicating a blockage in the main line? Understanding the specific nature of the problem will save you time and prevent unnecessary disassembly of your plumbing.
Tools You’ll Need for the Job
Preparation is the key to a smooth and stress-free drain replacement or cleaning. Having the right equipment on hand ensures you won’t have to abandon the project halfway through. Most of these items are affordable and easy to find at any local hardware store.
Essential Toolkit
- Plunger: A standard cup plunger is often the first line of defense against clogs.
- Drain Snake or Auger: A flexible cable that can reach deep into the pipe to break up or retrieve stubborn debris.
- Screwdrivers: Both Phillips and flat-head for removing the drain cover and handles.
- Adjustable Wrench or Channel-Lock Pliers: For loosening the nut that secures the drain body to the pipe.
- Bucket: To catch water and debris when you remove the drain assembly.
- Flashlight: Essential for seeing into the dark depths of your shower floor.
Step-by-Step: Removing the Old Drain
With your tools assembled, you can safely remove the existing drain. This process is usually straightforward, but it requires a bit of finesse to avoid damaging the surrounding tiles.
Start by removing the drain cover. Some covers are simply decorative and pop off with your fingers, while others are secured with a setscrew that requires a screwdriver. Once the cover is off, use a screwdriver to gently pry up the top of the drain mechanism, exposing the nut that connects the drain body to the pipe beneath the shower floor.
Place your bucket directly under the drain to catch any residual water. Using your adjustable wrench, grip the nut counterclockwise to loosen it. If it is stuck due to years of mineral deposits, try spraying it with a lubricant like WD-40 and letting it sit for a few minutes. Once the nut is loose, unscrew it by hand the rest of the way and carefully lift the drain body out of the pipe.
Addressing the Clog or Replacement
With the drain removed, you now have direct access to the pipe, allowing you to inspect the problem clearly.
For a Simple Clog
If the clog is minor, you might not need a new drain at all. Insert a drain snake into the pipe and crank the handle to break up or hook the hair causing the blockage. You can also try using a natural cleaning solution, such as a mixture of baking soda and vinegar followed by hot water, to dissolve soap scum and organic matter.
For a Full Replacement
If the drain mechanism is cracked, corroded, or the rubber gasket is brittle, replacement is the only option. Modern shower drains come in two standard sizes: standard body drains (roughly 2 inches) and smaller button drains. Ensure you purchase a model that matches the existing pipe size and fits your shower pan configuration.
| Drain Type | Best For | Difficulty Level |
|---|---|---|
| Standard Body Drain | Most residential showers with a deep pan | Moderate |
| Button or Pop-Up Drain | Shallow pans or modern minimalist designs | Easy |
Installing the New Mechanism
Installing the new drain is essentially the reverse of removal, but it presents a crucial opportunity to ensure a watertight seal.
Before inserting the new drain body, clean the area around the pipe opening thoroughly to remove any old plumber’s putty or debris. Most drains require a ring of plumber’s putty to create a waterproof seal between the drain flange and the shower floor. Roll the putty into a rope-like shape and press it firmly around the base of the drain.
Insert the drain body into the pipe and screw the retaining nut back onto the threads from underneath the shower floor. Tighten this nut securely by hand, then give it a final quarter-turn with your wrench. Be careful not to overtighten, as this can crack the porcelain or PVC pipe. Finally, reattach the drain cover and secure any setscrews.
Testing Your Work
Before you consider the job complete, you must test the drain to ensure there are no leaks and that the water flows correctly.
Turn the water on and let it run for a minute or two. Observe the drain body and the putty line for any signs of water seepage. If you notice a leak, you may need to tighten the nut slightly or, if the putty was squeezed out completely, reapply a fresh ring and retighten. Once you confirm there are no leaks, let the sink run for a few minutes and then fill the shower basin to the brim. Release the plug and watch how quickly the water evacuates. A properly functioning drain should remove standing water in seconds.
