Remove P-Trap — Disconnect the Old Drain Assembly
Part of project
How to Replace a Bathtub Waste and Overflow Drain Assembly · Step 4 of 9
In this video
Unscrew the two slip nuts that connect the P-trap to the tailpiece and the wall drain pipe. These can usually be loosened by hand. If they are too tight, use a pair of channel-lock pliers to get them started. Once the nuts are loose, pull the P-trap down and empty the water into the bucket.
Goal: Remove P-Trap
- P-trap nuts should only be hand-tight. Only use pliers to loosen them if necessary to avoid overtightening or cracking the plastic upon reinstallation.
Used in this video
- Channel-lock pliers (Pliers_Type: Channel-Lock, brand: Knipex) · optional — Loosening slip nuts on the P-trap that are too tight to turn by hand.
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FAQs
How long should I expect this bathtub drain replacement project to take, especially if I'm a beginner?
For a beginner, plan to dedicate 3-5 hours for this project, including preparation and clean-up. Accessing the old drain and ensuring proper sealing of the new one can take time, so don't rush the process to avoid potential leaks later on.
What are the most common mistakes beginners make that lead to leaks after installing a new bathtub waste and overflow?
The primary cause of leaks is inadequate sealing. Ensure you apply a generous amount of plumber's putty (like Oatey 14 oz. Plumber's Putty) under the drain flange and correctly position and tighten the overflow gasket. Always perform a thorough leak test before re-enclosing any access panels.
Do I need special tools to remove a stuck or corroded old drain flange, or will standard tools suffice?
While a screwdriver and tongue-and-groove pliers (Channellock 430/440) are often sufficient, a severely corroded flange might require a specialized drain wrench or carefully using a hacksaw (Husky 10 in. Close Quarters Hacksaw) to cut the crossbars. Avoid excessive force to prevent damaging the tub's finish.
What are the most important safety precautions I should take during this bathtub drain replacement?
Always turn off the water supply to the bathtub before starting to prevent accidental flooding. Wear safety glasses to protect your eyes from debris, and ensure good ventilation if using plumber's putty or sealants. A drop cloth (TRIMACO Stay Put Canvas Plus) will protect your bathroom floor and catch any spills.
Remove P-Trap — Disconnect the Old Drain Assembly
Part of project
How to Replace a Bathtub Waste and Overflow Drain Assembly · Step 4 of 9
In this video
Unscrew the two slip nuts that connect the P-trap to the tailpiece and the wall drain pipe. These can usually be loosened by hand. If they are too tight, use a pair of channel-lock pliers to get them started. Once the nuts are loose, pull the P-trap down and empty the water into the bucket.
Goal: Remove P-Trap
- P-trap nuts should only be hand-tight. Only use pliers to loosen them if necessary to avoid overtightening or cracking the plastic upon reinstallation.
Used in this video
- Channel-lock pliers (Pliers_Type: Channel-Lock, brand: Knipex) · optional — Loosening slip nuts on the P-trap that are too tight to turn by hand.
Frequently Asked Questions
How long should I expect this bathtub drain replacement project to take, especially if I'm a beginner?
For a beginner, plan to dedicate 3-5 hours for this project, including preparation and clean-up. Accessing the old drain and ensuring proper sealing of the new one can take time, so don't rush the process to avoid potential leaks later on.
What are the most common mistakes beginners make that lead to leaks after installing a new bathtub waste and overflow?
The primary cause of leaks is inadequate sealing. Ensure you apply a generous amount of plumber's putty (like Oatey 14 oz. Plumber's Putty) under the drain flange and correctly position and tighten the overflow gasket. Always perform a thorough leak test before re-enclosing any access panels.
Do I need special tools to remove a stuck or corroded old drain flange, or will standard tools suffice?
While a screwdriver and tongue-and-groove pliers (Channellock 430/440) are often sufficient, a severely corroded flange might require a specialized drain wrench or carefully using a hacksaw (Husky 10 in. Close Quarters Hacksaw) to cut the crossbars. Avoid excessive force to prevent damaging the tub's finish.
What are the most important safety precautions I should take during this bathtub drain replacement?
Always turn off the water supply to the bathtub before starting to prevent accidental flooding. Wear safety glasses to protect your eyes from debris, and ensure good ventilation if using plumber's putty or sealants. A drop cloth (TRIMACO Stay Put Canvas Plus) will protect your bathroom floor and catch any spills.