Kitchen Sink With Drainboard – method 1 to Unclog a kitchen sink with drainboard: Using the Common Plunger. First, fill the kitchen sink with drainboard halfway with hot water. Second, place the plunger over the drain.Third, move the plunger up and down quickly. Pull it out of the opening of the drain and see if the water begins to drain. Fourth, continue to do the same procedure until water go down the drain.
Method 2 to Unclog a kitchen sink with drainboard: Vinegar and Using Sodium Bicarbonate. First, place a pair of rubber gloves. Use a container to remove standing water from the kitchen sink with drainboard. Pour water into a bucket. Second, pour a cup of baking soda down the drain. Use a spatula to push the product into the opening, if necessary. Third, pour 1 cup of vinegar into the drain opening. Tape the drain so that the vinegar is forced to obstruction. Fourth, let the mixture vinegar and baking act for 5 minutes. Open the sink faucet to see if the issue is resolved. Fiveth, pour 4 cups of boiling water to the hot water not working. If the problem persists, use a mixture of baking soda and vinegar again.