How to remove and replace a bathtub?
Answer
Removing and replacing a bathtub is a significant bathroom renovation project that requires careful planning and execution. Here is a step-by-step guide to help you through the process:
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Preparation
- Measure the Bathtub Alcove: Measure the length and width of your current bathtub alcove to ensure you select the right size tub for your space. Standard bathtubs are 5 feet long and either 30 or 32 inches wide15.
- Determine the Drain Pipe Location: Identify the side of the alcove where the drain opening is located. This will help you choose the correct type of tub (left drain or right drain)1.
- Turn Off the Water Supply: Shut off the water supply to the tub. If there is no separate shutoff valve, turn off the water supply to the entire house. Test the water supply by turning on the bathtub faucet and then opening a valve at a lower level to relieve any remaining pressure1.
Removing the Old Bathtub
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Disconnect the Drain: Use a tub drain remover to twist out the drain. Remove the overflow drain cover and the stud securing the side tub flange on the side opposite the drain2.4
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Remove Nails and Screws: Remove any nails or screws securing the tub to the wall2.4
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Lift Out the Tub: Lift the tub out by lifting the side away from the drain and pulling it out at an angle. For cast iron tubs, break them up with a sledgehammer. For other materials, cut them up with a reciprocating saw or remove them whole1.4
Disposal of the Old Tub
- Break Up Cast Iron Tubs: Use a sledgehammer to break up cast iron tubs into manageable sections for disposal1.
- Dispose of Other Materials: Cut up steel, composite, or fiberglass tubs with a reciprocating saw. Porcelain-enameled steel tubs should be disposed of whole1.
Installing the New Tub
- Inspect the New Tub: Check the new tub for damage and report any issues to the manufacturer1.
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Prepare the Subfloor: Ensure the subfloor is level and even. Use a floor leveler if necessary1.2
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Set the Tub in Place: Use a helper to carefully set the tub onto the skids and slide it into position in the alcove. Check that the tub is level and use shims if necessary1.2
Final Steps
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Hook Up the Drain: Connect the drain and overflow assembly according to the manufacturer's instructions2.4
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Finish the Installation: Complete the installation by securing the tub to the studs and finishing the surrounding area with tile or other materials1.2
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References
1. How to Remove and Replace a Bathtub - The Home Depot2. How to Replace a Bathtub (Step By Step) - YouTube3. How to Remove and Replace a Bathtub - Home Depot Videos4. How to Remove and Replace a Bathtub - YouTube5. How to Install a Bathtub: Install an Acrylic Tub and Tub Surround
Author: The Home Depot
Key insights
- When replacing a bathtub, the flange must be installed behind the tile on all three sides to prevent water from leaking down behind the wall.
- Removing a bathtub involves disconnecting the plumbing and cutting through walls or ceilings to expose the drain lines.
- ️ Removing a cast iron bathtub requires breaking it into pieces with a sledgehammer, while acrylic or fiberglass tubs can be cut up with a reciprocating saw.
- ️ Some tubs are meant to be installed in a bed of mortar, providing extra support and leveling, but it's important to follow the manufacturer's instructions.
- Pre-drilling the flange and securing the tub to the studs with 2-inch exterior pan head screws is essential for a proper installation.
- Installing a new bathtub can be complicated and every installation is different, requiring attention to detail and precision.