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This is often the most challenging step without access from below. You will need a special tool called a shower drain wrench or a 'Drain Key'. This tool has expandable arms or prongs that fit into the crosshairs or lugs inside the drain body. Insert the tool into the drain, engage it securely, and attach a wrench or pliers to the top of the tool. Turn counter-clockwise to unscrew the drain body from the threaded pipe fitting below. This may require significant force, especially if the drain is old. Once loosened, you can unthread it by hand and lift it out.
This project involves the complete removal of an old shower drain from an existing shower base and the installation of a new one. The process focuses on a scenario where there is no access to the plumbing from below the shower. It requires specialized tools for removal and a modern replacement drain that can be installed entirely from above, ensuring a watertight seal to prevent leaks.
This specialized tool is crucial because it grips the drain from the inside, allowing removal when there's no access from below the shower. Standard tools like pliers or wrenches usually can't get enough leverage or grip to unscrew a corroded drain from the top, risking damage to the shower base. It ensures you can remove the old drain without damaging the surrounding shower pan.
Always turn off the water supply to the shower to prevent accidental leaks or flooding. Ensure good ventilation when using mineral spirits for cleaning, as fumes can be strong. Wear appropriate eye protection and gloves to protect against chemicals, sharp edges, and debris throughout the process.
For a beginner, expect this project to take 2-4 hours, allowing ample time for preparation, thorough cleaning, and proper sealant curing. The material cost, including a new drain kit, plumber's putty, and sealant, typically ranges from $30-$70, not including any specialized tools you might need to purchase.
The biggest mistake is inadequate cleaning of the drain opening and improper application of plumber's putty or sealant. To ensure a watertight seal, meticulously remove all old caulk, rust, and debris from the drain opening. Apply an even, generous bead of plumber's putty under the new drain flange, tightening it correctly to squeeze out excess, and always perform a thorough leak test before finalizing.
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