How to Make Drainage for a Bathroom

Check your local building codes. These may regulate the function and sizes of the pipes necessary for your bathroom drains.

Locate the relevant valves and turn off all water in the bathroom. Drain down the system by opening all the taps and flushing the toilet until the storage tank is empty.

Cut the pipe the required length using a backsaw or a fine-toothed saw. The pipe should fit using the prescribed distance for each diameter of pipe.

Remove rough edges of the freshly cut pipe using rough sandpaper.

Clean the ends of the pipe and the inside of the fitting where the pipe will join with a damp rag.

Measure the fittings carefully. Spread pipe glue around the end of the pipe and on the inside of the fitting with a dauber. Insert the pipe into the fitting. Twist to ensure the glue is spread evenly. Wait for the glue to dry. Refer to the manufacturer's instructions for drying time.

Replace the bits on your drill with heavy-duty plumber bits. Drill your new drain line into the side of the new outlet. Place a trap on the sink, tub or shower end to prevent fumes from coming back through this line into your home.

Test the new system for any leakage. Let the water run and drain. Check the joints for any visible problems in the new system.

Seal up the wall and work space to limit access to the pipes.