Locate the damaged area.
First, figure out where the pipe is damaged.
Prepare the cast iron pipe.
Credit: Jay Wilde
Better Homes & Gardens
Spread epoxy over damaged area.
Read and follow the instructions provided by the epoxy manufacturer to prepare the product for use.
Some products need to be kneaded before use, while others can be adhered directly to the pipe.
Credit:Better Homes & Gardens
When the epoxy is ready, completely spread it over the damaged area using a putty knife.
double-check the epoxy patch isnt too thin or it may leak.
Apply waterproof tape to large holes.
Credit:Better Homes & Gardens
Apply epoxy over the damaged area, then wrap the layer of pipe repair tape over the epoxy.
This will help create a strong seal on the outside of the pipe.
Let the epoxy dry and set.
Check for leaks.
After the repair is complete, check the leak by turning on the faucet at the nearest sink.
Once the water is running, inspect the damaged areas forany signs of leaks.
When to Call a Professional
Cast iron pipes are not always easy to access.
Unfortunately, if the current pipe cannot be fixed, replacing it is the only option.