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Install and Tighten Drain Assembly — Disconnect Waste and Overflow Assembly

Intermediate

Part of project

How to Remove an Old Bathtub for a Bathroom Remodel · Step 4 of 7

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In this video

Insert the sealed drain shoe assembly from underneath the tub, pressing it against the drain opening. From inside the tub, screw the drain strainer into the drain shoe. Use a drain wrench, with a screwdriver inserted through it for leverage, to tighten the strainer firmly. This compresses the gasket and creates the seal. Return underneath and use channel-lock pliers to tighten the slip nut connecting the horizontal pipe to the overflow assembly. As a final precaution, apply sealant around the exterior seam where the drain shoe flange meets the bottom of the tub.

Goal: Install New Drain

Used in this video

  • Drain Wrench (brand: Husky)Tightening the drain strainer from inside the tub.
  • Screwdriver (Screwdriver_Type: Phillips)Providing leverage for the drain wrench.
  • Channel-lock PliersTightening the slip nut on the overflow connection.
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FAQs

What are the most critical safety precautions I should take before and during bathtub removal?

Always shut off the main water supply to your home and drain the lines before beginning. Wear safety glasses (HDX Indoor Safety Glasses), heavy-duty gloves (Husky Large Heavy Duty Glove), and a respirator (3M P100 Household Respirator) to protect against dust, debris, and potential mold. Ensure the work area is well-ventilated, and if using power tools, keep cords away from water and work carefully.

Do I really need specialized tools like a tub drain wrench or a reciprocating saw, or can I get by with standard tools?

A tub drain wrench (like the Husky Double Ended Tub Drain Wrench) is highly recommended for efficiently removing the drain assembly without damaging the plumbing. While not always strictly necessary, a reciprocating saw with a demolition blade (like DIABLO Demo Demon) can significantly ease the removal of difficult tubs, especially heavy cast iron ones, by cutting them into manageable pieces. A pry bar (Stanley 12 in. Wonder Bar Pry Bar) is also essential for detaching the tub.

How long does a typical bathtub removal project take for an intermediate DIYer, and is it a one-person job?

For an intermediate DIYer, removing a bathtub typically takes 4-8 hours, depending on the tub type, access to plumbing, and unexpected issues. While some initial steps can be done solo, extracting the tub itself, especially if it's cast iron, often requires at least two people due to its weight and bulk to prevent injury or damage.

What are common pitfalls or mistakes to avoid when disconnecting plumbing or detaching the tub from the wall?

A common mistake is not completely shutting off the water or checking for remaining pressure before disconnecting pipes, leading to leaks. Another is forcefully prying without locating all securing points (like nailing flanges behind the surround), which can damage surrounding walls or the subfloor. Always double-check for hidden screws or mortar that might still be holding the tub in place.