My bathtub started to drain very slowly a few weeks ago. I have tried Liquid Plumber with no results. My bathroom sink had been draining slowly before that. I just moved into this place last August and the tub was ok up to now but the sink was a slow drainer right from the start. Any hints as to what might cause this problem?
I am NOT a pro plumber, just a very long-time handyman.
I built my home in 1977, and have never had to snake a sluggish drain. Whenever I see a drain (kitchen sinks, two bathroom sinks, two shower/tub units) getting sluggish, I pour in liquid enzyme-based draincleaner such as DrainCare. It dissolves the organic blockage, but will not harm you, the fixture or the drain lines. (I never use caustic drain cleaners like Liquid Plumber or Drano. They usually just leak right past a partial blockage anyway and don't help at all.)
All that you do is run warm water down the sluggish drain, pour in a good slug of DrainCare, let it eat on the organic gunk (hair, soap scum, body oils, etc.) overnight, and then flush the drain line with hot water. I start the flushing with a kettle of boiling water, then run the hot water only until the drain is free and clear. If the drain is really sluggish, you may have to do it twice overnight.
Works every time.