Waterproofing a pipe through a foundation is an important step for preventing costly water damage. The following steps will help you waterproof the pipe correctly:
• Identify the point where the pipe passes through the foundation wall
• Dig a trench around this area to expose it
• Inspect and clean out any debris from inside of the pipe's opening
• Apply sealant or caulk to create a watertight seal around the outside of the pipe
• Cover with dirt, sand, or concrete to complete installation. With these steps, your pipes should be sealed securely against moisture and last for many years.