Winterizing Your Outdoor Kitchen Sink: A Simple Guide

If you have an outdoor kitchen, winter can be your sink’s worst enemy. When temperatures drop, standing water in pipes can freeze and expand—causing cracks, leaks, and expensive repairs. Luckily, winterizing your outdoor sink is simple if you follow the right steps.

First, turn off the water supply to your outdoor sink from the indoor shut-off valve. Then, open the outdoor faucet to let any remaining water drain out completely. This prevents pressure buildup when temperatures drop.

Next, disconnect and drain all hoses and supply lines. Use compressed air to blow out any remaining water in the pipes if possible. After that, pour a small amount of RV antifreeze into the P-trap under the sink. This will keep residual water from freezing.

Don’t forget to clean the sink thoroughly before covering it for the season. Food residue or standing moisture can attract pests or cause odors over time. Finally, use a weatherproof sink cover to shield it from snow and ice.

A few simple steps now can save you thousands later. At I Hate My Sink, we help homeowners protect their kitchen investments—indoors and out—so your setup stays ready for spring.

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