Yes, a shower needs a p-trap. If there is no p-trap installed then the sewer gasses have a clear path into your home. Any drain in your home needs a p-trap so there is standing water to block the gasses from floating through your drain and I to your house.
Improved answer
A trap does NOT have to be always "P" trap There are running traps J traps , LA traps depending on the application .. Showers and bath tub normally have a P trap main sewers and storm drains can have a running trapCopyright © 2026 eLLeNow.com All Rights Reserved.
