How To: Apply Hot Mop Tar

Most often used in roofing jobs and shower installations, hot mopping is a process through which asphalt and tar paper are used to create an impermeable layer.

By Bob Vila | Updated Feb 7, 2018 1:08 PM

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Hot mop tar is a good way to waterproof projects like an indoor planter. Here’s how it’s applied. After it’s heated in a kettle, hot asphalt is used to adhere layers of tar paper to cover the surface. Overlap each sheet to prevent leaks, applying enough pressure for bonding. Finish with a top layer of tar for a waterproof surface.

For more on waterproofing, consider:

Install Gutter Flashing
How To: Dry a Wet Basement
Bob Vila Radio: Basement Waterproofing