I have recently replaced vanity in my bathroom. Because the pipes for the water and drain come out of the floor not the wall I had to put a piece of flexable pipe for the drain...hence no trap (the way the old vanity was when I moved in, which also had this problem) ..the bathroom has a trap in the floor that is for the Tub and the sink. My problem is the sink is slow to drain..when you run the faucet for any length of time it starts to fill up. Is this because I don't have a trap for the drain pipe on the sink? The tub doesn't have this problem, it drains very well and doesn't fill up when showering. Is there anything I can do to make this drain faster?
You might have a clog (slow drain) or you might have poor plumbing that should be replaced. Try using Drano foaming pipe cleaner on the drain. It works phenomenally well on slow drains. If it does nothing, then you probably have a poorly designed drain that a plumber should replace or re-design so you can replace it.
Dear Dog, First of all, the drain cleaners on the market compound the problem. They "cook" the clog and make it worse. Second, you NEED a trap. From what you describe, you need to find an "S" trap which will get you to where you need to go. Third, call a plumber, it will save you cash in the long run. Len