Cottage Closing Checklist: Protect Your Pipes and Peace of Mind

As the days get shorter and the lakes quiet down, it’s time for one last weekend at the cottage — and that means cottage closing season has arrived. Taking a few hours now to properly shut down your plumbing can save you from frozen pipes, water damage, or costly repairs when spring returns.

Before you say goodbye for the season, use this easy cottage closing checklist

Whether your cottage is near the coast or tucked inland, this simple cottage closing checklist will help you protect your investment and return next year to a stress-free start.

1. Shut Off and Drain the Water Supply

Start your cottage closing by turning off the main water supply. Open every indoor and outdoor faucet — hot and cold — to let the lines drain completely. Flush toilets to empty the tanks and bowls, then pour plumbing-safe antifreeze into each one. Don’t forget outdoor taps, garden hoses, and any secondary water lines that might hold residual water.

2. Drain Appliances and Fixtures

Dishwashers, washing machines, and hot water tanks can all hold water in hidden spots that freeze easily. Run each appliance through a short drain cycle if possible, or follow the manufacturer’s steps for winterization. Leave fridge doors slightly open to prevent musty smells, and if your unit has an ice maker, disconnect it from the water line.

3. Add Plumbing Antifreeze Where Needed

Use non-toxic, plumbing-rated antifreeze in floor drains, sinks, tubs, and traps to prevent residual water from freezing and cracking pipes. A cup or two per drain is usually enough. Avoid automotive antifreeze — it’s unsafe for plumbing systems and harmful to the environment.

4. Check the Septic and Pump Systems

Your cottage closing isn’t complete without a quick septic check. Make sure tank lids are secure and free from surface runoff, and have your system pumped if it’s nearing capacity. If your cottage uses a well or a jet pump, follow manufacturer instructions to drain and store equipment safely indoors. For more guidance, see our related post Cottage Plumbing Prep: Smart Shutdowns & Late Summer Must-Dos.

5. Insulate Exposed Plumbing and Seal Drafts

Inspect under sinks, crawlspaces, and exterior walls for vulnerable pipes. Wrap exposed lines with insulation sleeves and seal any drafts that could let cold air in. These quick steps help prevent frozen pipes and make spring opening easier.

6. Double-Check Electrical and Heating Systems

If your cottage has baseboard heaters, leave them at a low setting (around 10°C) to maintain gentle heat. Unplug appliances, check smoke detectors, and consider shutting off power at the main breaker if your system allows it safely. A few extra minutes here ensure both comfort and safety when you return.

7. Walk Through Before You Lock Up

Do one final walkthrough to confirm everything is drained, unplugged, and secure. Pour any leftover antifreeze down floor drains, check that windows and doors are sealed, and make sure all faucets are open to relieve pressure.

Bonus Tip: Download Your Free Homeowner Guide

Get a printable version of our free “Guidebook for New Homeowners.”

 It’s full of practical maintenance advice for cottages, homes, and everything in between.

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Proper cottage closing keeps your plumbing safe

Proper cottage closing keeps your plumbing safe, your systems secure, and your mind at ease until spring. Whether you need help draining lines, inspecting pumps, or adding antifreeze, Dalton Jodrey Plumbing & Heating offers professional Cottage & RV Care Services across Lunenburg County and beyond.

We’ll help you protect what matters most — your cottage and your peace of mind.