In this video, This Old House plumbing and heating expert Richard Trethewey shows how to outfit a bathroom at basement level.
How to install a basement toilet
- Using PVC pipe and fittings, connect the lavatory drain line to the macerator unit.
- Connect discharge pipe to the drainpipe leading from the macerator unit.
- Use nut driver to tighten stainless-steel clamp connecting PVC lavatory pipe to the macerator unit.
- Tighten the discharge adapter onto outlet port on top of the macerator unit using a nut driver.
- Connect the PVC vent pipe from the macerator unit to the existing vent stack.
- Set toilet in place and mark its mounting holes on the floor.
- Move the toilet out of the way and drill pilot holes into the floor.
- Set the toilet back into place and secure it to the floor with two brass screws.
- Connect toilet to the discharge pipe on the macerator unit; tighten the stainless-steel clamp with a nut driver.
- Connect the water-supply line to the toilet; open the shut-off valve, flush toilet and check for leaks.