One of the most important things you can do to help prevent basement flooding is install a standpipe in all the basement floor drains. Standpipes usually are installed 2 to 3 feet above the basement floor level. This allows any backflowing water to rise up into the pipe rather than onto the basement floor. You can make a standpipe for your basement with the proper tools, materials and do-it-yourself ability.
Things You'll Need
- Flathead screwdriver
- Phillips screwdriver
- Expandable drain gasket
- Pipe thread sealing tape
- Galvanized 1.5-inch-diameter steel pipe, 2-foot length
- Pipe wrench
Locate the basement floor drain.
Remove the grate screws from the drain grate. Turn the screws counterclockwise using the appropriate screwdriver.
Remove the grate from the floor drain by prying it up with a flathead screwdriver.
Insert an expandable drain gasket into the drain pipe opening. Ensure the expansion screw heads on the gasket flange are facing up.
Tighten each of the expansion screws clockwise one full turn at a time in rotation until the gasket is firmly secured within the drain pipe.
Apply pipe thread sealing tape clockwise around one threaded end of a 2-foot length of 1.5-inch-diameter galvanized steel pipe.
Install the threaded end of the standpipe into the threaded center of the drain gasket. Turn the standpipe clockwise until snug.
Tighten the standpipe using a pipe wrench.
Repeat Steps 2-8 on all additional basement floor drains.
Tips & Warnings
- The principle behind standpipes is that the pressure of the water flowing into a basement is countered by the pressure of the water in the standpipe.