It s not clear from your question if he replaced the p trap with another type of trap or just removed it completely.
No p trap under bathroom sink.
The compartments must be next to one another.
Here we show you how to perform your plumbing p trap installation when the bathroom sink drain doesn t line up.
Hire a pro for best results and make sure they know the plumbing codes for your area.
The sink drain starts as a tailpiece and may reach the p trap without additional parts.
Plumbing tools and plumbing parts in this v.
Each compartment cannot be spaced more than 30 inches apart center to center of the drains.
Most plumbing codes require a trap be installed within 24 inches of the sinks outlet.
The p trap is an important component of sink plumbing that prevents toxic sewer gases from leaking into the home.
And no trap is definitely not to code for the reasons stated in the other answers sewer gases.
In the us non p trap traps are not to code because they are more likely to cause a siphon.
Even if there is a trap under the floor it may need to be relocated.
If not add a tailpiece to make up the distance cutting it to the needed length.
With your pedestal sink on the wall you can install the p trap.
Find under sink plumbing at lowe s today.
We initially show the p trap bac.
For all you diy folks who suffer from a leaky p trap under sink in this video we will show you how to repair it.
The length of the tailpiece that connects the drain to the trap depends on a.
The u shape of this pipe is the trap that retains enough water to prevent sewer gases from entering the bathroom.