Telltale signs: kitchen drain cleaning
Kitchen lines fail differently from bathroom ones. Instead of hair and soap, the culprit is fat, oil and starch that cools inside the pipe and hardens into a waxy collar. The sink drains a little slower each week until one evening it stops altogether, often right after a holiday meal.
- Water rising in one basin when the dishwasher empties
- A gurgle from the sink after the washing machine runs downstairs
- A sour smell that returns no matter how often you rinse the strainer
- Standing water that takes more than a minute or two to disappear
If several fixtures back up at once, the trouble is probably further down, and main sewer line clearing is the better starting point.
What we bring
- A drum machine and hand auger matched to the bore
- Slip-nut wrenches and a box of trap washers
- Wet vacuum and drop sheets
Tested before we leave
- Full-flow test with a filled basin or tub
- Every slip joint we opened checked dry
- Trap reassembled with a fresh washer
On the job: what we open, clear and test
We start by protecting the cabinet floor and emptying the sink. The trap is removed and inspected, because a surprising number of blockages sit right there. From the trap arm we run a cable sized for kitchen pipe, working back toward the stack and feeling for the soft drag of grease rather than the hard stop of a solid object.
Cabling punches a hole through grease, but it does not always scour the walls. Where a line has heavy buildup, we may suggest flushing with hot water or, on longer runs, jetting. Once the line runs freely we reassemble the trap with fresh washers, run both basins and the dishwasher together, and check for drips underneath.
What can change the job
- Access. Island sinks and long horizontal runs under a floor are slower to reach than a sink on an outside wall.
- Pipe material. Older galvanized drains narrow from the inside and catch grease faster than plastic.
- Venting. A poorly vented sink drains sluggishly even when the pipe is clean.
- Disposals. Food waste units send more solids down the line and change how we approach the clog.
Etobicoke homes and this job
Many postwar bungalows in places like Long Branch were renovated with kitchens moved away from the original stack, which means longer drain runs and more places for grease to settle. In older brick houses, the kitchen often drains through a cast-iron or galvanized branch that has been in service for decades. We take care not to damage tired fittings while we clear them.
Basement flooding is a concern across the city, and a clogged kitchen branch can push water out of a lower floor drain. Our guide to the Toronto basement flooding subsidy explains the protective devices the city has supported.
Before you call
Stop using the dishwasher and avoid pouring chemical cleaners into a sink full of standing water; they rarely reach the clog and make the pipe unpleasant to open. Note whether the bathroom fixtures drain normally, and tell us if the problem has happened before. That short history helps us bring the right equipment the first time. Bathroom sinks and tubs are a separate matter, covered on our bathroom drain cleaning page.
