How To Change Pipes Under Bathroom Sink

How to Change Pipes Under a Bathroom Sink

When dealing with plumbing issues, changing pipes under a bathroom sink is a common task. It may seem daunting, but with the right tools and a bit of know-how, it's a project you can tackle yourself. This guide will provide you with a step-by-step approach to replace pipes under your bathroom sink. ### Tools and Materials You'll Need: - Adjustable wrench - Basin wrench - Pliers - Hack saw or pipe cutter - Flux - Solder - Solder paste - New pipes - Pipe fittings ### Step 1: Shut off the Water Supply Before you begin, it's crucial to shut off the water supply to the bathroom sink. Locate the water shut-off valves, which are typically found under the sink or near the toilet. Turn the valves clockwise to close them. ### Step 2: Disconnect the Old Pipes Use an adjustable wrench or basin wrench to loosen the nuts that connect the pipes to the sink drain and faucet. Hold the pipe with pliers to prevent it from spinning as you loosen the nuts. Once the nuts are loose, carefully remove the old pipes. ### Step 3: Cut the New Pipes Measure and cut the new pipes to the desired length using a hack saw or pipe cutter. Ensure that the cuts are clean and square to ensure a proper fit. ### Step 4: Assemble the Pipes Apply flux to the ends of the pipes and fittings. This will help the solder adhere properly. Assemble the pipes and fittings, ensuring that the connections are tight. ### Step 5: Solder the Joints Apply solder paste to the joints and heat them using a soldering iron. Allow the solder to flow around the joints, creating a seal. Wipe off any excess solder using a damp rag. ### Step 6: Reattach the Pipes Reconnect the new pipes to the sink drain and faucet. Hand-tighten the nuts, then use an adjustable wrench to secure them firmly. Turn on the water supply and check for leaks. If any leaks appear, tighten the nuts further or re-solder the joints. ### Tips for Success: - Wear safety glasses and gloves for protection. - If you encounter any stubborn nuts or bolts, use penetrating oil to loosen them. - If you're not confident in soldering, consider hiring a licensed plumber. - Clean up any debris or water spills immediately to avoid slips or falls. - Replace the drain stopper or pop-up assembly if necessary.