A slow draining sink almost always means a clog is building up inside your pipes. Hair, soap scum, grease, and bits of food stick to the pipe walls and slow the water down. Most slow sinks clear with simple tools you already have at home.
Why Your Sink Drains Slow
Most slow sinks come from stuff that builds up over time. In the bathroom, hair and soap scum are the main culprits. They bind together and coat the inside of the pipe. In the kitchen, grease and food scraps are the usual cause. Grease pours in warm, then cools and hardens like candle wax. A lot of it collects in the P-trap. That's the curved pipe under your sink. Calgary's hard water makes the problem worse. The minerals leave a chalky layer that grabs onto soap and grease.
Start With Hot Water
Boil a kettle and pour the hot water straight down the drain. Do this in two or three rounds. Hot water melts soft grease and loosens soap scum. It's the easiest first step and it costs nothing. If your sink holds standing water, bail most of it out first. Give the hot water a clear path to the clog.
Grab a Plunger
A plunger is not just for toilets. It works well on a slow sink too. Fill the sink with a few inches of water. Cover the overflow hole with a wet rag. Then plunge hard about ten times. The push and pull can break the clog loose.
Try Baking Soda and Vinegar
This old trick is safe for your pipes. Pour about half a cup of baking soda into the drain. Follow it with half a cup of white vinegar. You'll hear it fizz. That bubbling action lifts grease and grime off the pipe walls. Let it sit for fifteen minutes. Then flush it with hot water. Repeat once if the sink still drains slow.
Clean Out the P-Trap
Still slow? The clog is likely sitting in the P-trap. Put a bucket under the trap to catch water. Unscrew the two slip nuts by hand or with pliers. Pull the trap off and dump it out. You'll often find a wad of hair, grease, and gunk. Rinse it in another sink and check for cracks. Then screw it back on snug. This one step fixes a lot of slow sinks. If the trap was clean but the sink still crawls, the clog sits deeper. That's when professional drain cleaning saves you time.
Skip the Harsh Chemical Drain Cleaners
Store bought chemical drain cleaners feel like an easy fix. They are not worth the risk. The strong acids or lye heat up inside the pipe. Over time that heat can warp or crack older pipes. Many Calgary homes built between 1985 and 1997 have grey Poly-B pipe. Harsh chemicals are rough on that plastic. The liquid also pools on top of a full clog and eats at the metal below. If the clog does not move, you now have a pipe full of caustic liquid. That makes the next repair harder for anyone who opens it.
When a Slow Drain Means a Bigger Clog
Sometimes a slow sink is a warning sign of something deeper. Watch for these signs:
- More than one drain runs slow at the same time
- Water backs up in another sink or the tub
- You hear gurgling from the drain or toilet
- A rotten egg smell rises up from the pipe
- The slow drain comes back within a few days
These point to a clog in the main drain or sewer, not just the sink. Tree roots, packed grease, or an aging pipe could be the cause. That job needs a camera and a proper snake or jetter. Our licensed plumbing services team handles both the drain and the pipe on one visit.
When to Call RR Calgary
A slow sink is an easy home fix most of the time. But a clog that keeps coming back is worth a pro's eyes. RR Calgary Plumbing and Drains has served the city since 1996. Our technicians are certified journeyman plumbers, so one team clears the drain and fixes the pipe. Most drain crews can't do plumbing. Most plumbers won't touch a sewer. We do both. There is no travel fee in Calgary, Airdrie, Cochrane, and Chestermere. Request service online or call us at (403) 250-2660.