How to stop a leaking drain pipe under my sink temporarily?

 
Assess the Situation
 

• Examine the leaking drain pipe carefully to understand the location and severity of the leak. Identify whether it is coming from a joint, a crack, or a loose connection. This will help you determine the best temporary repair method.
• Check for any corrosion, wear, or misalignment that might be worsening the leak.

 
Shut Off the Water Supply
 

• Locate the shutoff valve under the sink and turn it off to prevent additional water from flowing through the pipe. If no individual valve exists, shut off the main water supply for your home.
• Open the faucet to drain any remaining water from the pipes, reducing the risk of water pressure interfering with your repair.

 
Clean and Dry the Area
 

• Wipe away any moisture, grime, or debris around the leak using a clean cloth. A dry surface is essential for temporary fixes like tape or clamps to adhere properly.
• If needed, use a small brush and a non-abrasive cleaner to ensure the surrounding area is free of oil or dirt.

 
Use a Temporary Pipe Repair Clamp or Tape
 

• For a quick fix, wrap a layer of plumber’s tape (Teflon tape) around the leak if it is a joint, or apply a waterproof repair tape directly over the crack or hole. Ensure the tape is applied tightly and covers the affected area completely.
• If available, use a temporary repair clamp designed for pipes by placing the rubber gasket firmly over the leak and securing it with the clamp. Follow the manufacturer’s instructions and ensure there is enough pressure to stem the flow.

 
Apply Epoxy or Fiberglass Repair Putty
 

• For a more durable temporary solution, mix a two-part epoxy or use a pre-made fiberglass repair putty. Apply it generously over the leaking area, molding it to cover the crack or joint completely.
• Smooth out the material with a gloved finger or a tool to ensure even coverage. Allow the material to cure as per the instructions – typically a few hours – before restoring water flow.

 
Secure the Repair with Hose Clamps
 

• If the leak is coming from a joint or slightly separated pipe, consider using one or more adjustable hose clamps. Position a piece of rubber or an appropriately sized piece of plastic over the leak and tighten the clamps until the patch is secure.
• This method can temporarily stop minor leaks by creating enough pressure to cover the defect and reduce water flow.

 
Test the Temporary Fix
 

• Slowly open the water supply and monitor the patched area closely. Check for drips or pooling water to confirm that the repair is holding effectively.
• Keep an eye on the fix for a little while to ensure it remains intact under water pressure.

 
Plan for a Permanent Repair
 

• Remember that these are temporary solutions intended to reduce the leak until you can replace or permanently repair the drain pipe. Once you have controlled the immediate problem, schedule a full repair or replacement with a qualified plumber.
• A permanent fix will help prevent potential water damage and ensure the long-term integrity of your plumbing system.

 

It’s worth noting that residential and commercial properties in St. Louis and Nashville often experience similar challenges, making thorough temporary repairs an important first step while planning for a lasting solution.