Copper pipes are widely used in plumbing for their strength and durability. However, leaks can occur at connections due to improper tightening, faulty soldering or natural wear and tear. Prompt repair is essential to avoid deterioration of the installation and damage caused by water infiltration.
Identify the source of the leak
Before proceeding with repairs, it’s important to locate the leak and determine its cause. The most common problems are :
- A loose connection, allowing water to leak through the thread.
- A poorly made weld, which may be porous or cracked.
- A defective seal or sealing ring on a mechanical fitting.
- Advanced copper corrosion, weakening the pipe near the connection.
A simple drying of the area and careful observation will reveal exactly where the leak is coming from.
Repairing a loose fitting
If the leak comes from a threaded fitting, tightening it with a wrench or wrench may be all that’s needed. However, it’s best to dismantle the fitting and apply sealing tape (Teflon) or joint compound to the thread before screwing it back on. This ensures a better seal.
Repairing a leak on a welded fitting
If the leak is due to a faulty weld, there are several solutions:
- Repair with epoxy putty: for a temporary solution, apply specific plumbing putty to the leak area after thoroughly cleaning and drying the pipe.
- Redoing the solder joint: for a lasting repair, heat the existing solder joint with a flashlight, add paint stripper and tin before re-forming a watertight joint.
Before working on a solder joint, it’s essential to turn off the water and drain the pipe to avoid any problems when heating the copper.
Repairing a leak on a mechanical fitting
Some copper fittings are fitted with olive or compression fittings, which do not require soldering. Should a leak occur, it is often sufficient to replace the sealing ring (brass olive or fiber seal) and tighten the fitting with a wrench.
Replacing a damaged fitting
If the fitting is too damaged or corrosion is advanced, it should be replaced. To do so, proceed as follows:
- Turn off the water supply and drain the system.
- Use a tube cutter to remove the damaged section of copper.
- Clean the ends before installing a new fitting, whether welded or mechanical.
- Check for leaks after re-watering.
Call on Leader Services
If the leak persists, or if the repair requires a more complex intervention, Leader Services provides qualified plumbers to identify and repair leaks in your copper installation.
- Discover our plumbing services: Leader Services – Plumbing
- Need a quick response? Contact us here: Leader Services – Contact
Conclusion
Leaks in copper fittings can be repaired in different ways, depending on their origin. A simple tightening or addition of Teflon may suffice for a threaded connection, while a defective solder joint will have to be reworked to ensure a perfect seal. If the leak is due to advanced wear of the copper, it’s best to replace the fitting or section concerned. For a reliable, long-lasting repair, a professional is often the best solution.
