Michigan winters are not known for patiently waiting until the calendar says it is their turn.

If you own a cabin or cottage, preparing it before freezing temperatures arrive can help prevent burst pipes, roof leaks, pest problems, and other unpleasant surprises. It can also make reopening the cabin much easier when warmer weather returns.

So, how do you winterize a cabin?

Start by deciding whether you are closing it for the entire winter or plan to visit throughout the season. From there, protect the plumbing, inspect the exterior, clean and store outdoor items, discourage pests, address air leaks, and arrange for someone to monitor the property.

Our main mission here at RetroFoam of Michigan is to help homeowners make their houses, and even cabins, more comfortable and energy-efficient. When given the opportunity, we also like to educate homeowners and help them out as much as we can.

With that being said, we’ve come up with a list of chores to do as you prepare your cottage in Michigan for winter.

Key Points: Michigan Cabin Winterization

• Winterize your cabin before Michigan experiences consistent freezing temperatures.
• A cabin being closed for the season requires different plumbing preparation than one used throughout the winter.
• Draining the plumbing is generally the safest option for an unheated seasonal cabin.
• Insulating exposed pipes can slow heat loss, but insulation alone cannot guarantee that pipes will not freeze.
• Roof, gutter, pest, and exterior maintenance can help prevent damage while the property is vacant.
• Air sealing and cabin insulation can improve comfort if you use the property year-round.
• Remote temperature sensors and occasional property checks can provide an early warning of trouble.

Your Cabin Winterization Checklist

Learning how to winterize a cabin is easier when you work through the property one system at a time.

Here are seven steps to help prepare your Michigan cabin for winter.

1. Decide Whether You Are Closing the Cabin or Using It This Winter

Before completing your cabin winterization checklist, decide how the property will be used.

If you are closing the cabin until spring, you may shut off the water, drain the plumbing, unplug appliances, and reduce or turn off the heat when it is safe to do so.

If you plan to visit during the winter, you will likely need to maintain heat, keep the plumbing operational, and arrange for the property to be checked between visits.

This decision affects nearly every step that follows. It is also a good idea to review your insurance policy before leaving the cabin vacant or unheated. Some policies include requirements for maintaining heat, shutting off the water, or having someone inspect the property.

2. Winterize the Cabin Plumbing

Frozen pipes are one of the biggest risks in an unoccupied Michigan cabin.

Water expands when it freezes, creating pressure inside metal and plastic pipes. Pipes in exterior walls, crawl spaces, basements, cabinets, and other unheated areas are especially vulnerable, according to the American Red Cross.

When Closing the Cabin for the Season

If the cabin will not be heated or used during the winter, shutting off the water and draining the plumbing system is usually the safest approach.

Depending on the cabin’s plumbing system, the process may include:

• Shutting off the main water supply or well pump
• Opening faucets to drain the supply lines
• Draining outdoor faucets and disconnecting hoses
• Emptying the water heater according to its manufacturer’s instructions
• Draining appliances connected to water, such as washing machines and dishwashers
• Clearing water from toilets, traps, and other fixtures
• Blowing remaining water from the lines when necessary

Only use products specifically approved for plumbing systems if antifreeze is needed in toilet bowls or drain traps. Automotive antifreeze should never be used.

Plumbing systems vary, especially in cabins with wells, septic systems, boilers, or seasonal water lines. A licensed plumber can help winterize cabin plumbing properly and make sure nothing gets overlooked.

When Using the Cabin During Winter

If you plan to keep the water on, maintain reliable heat throughout the cabin. The American Red Cross recommends keeping the thermostat at no lower than 55 degrees when leaving a home during cold weather.

You can also help protect vulnerable plumbing by:

• Insulating exposed hot and cold water pipes
• Sealing drafts around plumbing penetrations
• Keeping interior doors open so warm air can circulate
• Opening sink cabinets during extreme cold
• Installing a low-temperature sensor or freeze alarm

Pipe insulation slows heat loss, but it does not create heat. Pipes may still freeze if the cabin becomes cold enough or the heating system fails.

3. Inspect the Roof, Gutters, and Exterior

Small exterior problems can become expensive when they sit unnoticed for several months.

Clean leaves and debris from the gutters so melting snow has somewhere to drain. Clogged gutters can contribute to water backing up along the roofline and may increase the risk of ice-related damage.

While inspecting the exterior, look for:

• Missing, lifted, or damaged shingles
• Loose flashing around chimneys and roof penetrations
• Damaged siding or trim
• Cracks or gaps around windows and doors
• Tree limbs hanging over the roof
• Signs of water collecting near the foundation
• Damaged chimney caps or vent covers

If the cabin receives heavy snowfall, consider arranging for someone to monitor snow accumulation and remove excess snow when necessary.

Cabins used during winter should also have fireplaces, wood stoves, chimneys, and heating equipment inspected and serviced before the season begins.

4. Clean and Store Outdoor Items

Michigan snow and ice are not gentle with outdoor equipment.

Remove, clean, and store anything that could be damaged, blown around, or buried during the winter. That may include:

• Boats and personal watercraft
• Removable docks and ladders
• Life jackets and water toys
• Outdoor furniture
• Grills and fire pit accessories
• Garden hoses
• Flowerpots and decorations
• Tools and lawn equipment

Follow the manufacturer’s instructions when winterizing boats, lawnmowers, generators, and other gas-powered equipment. Fuel, batteries, and water systems may require different storage steps.

Complete one final round of yard work as well. Mow the grass if needed, remove heavy leaf buildup near the cabin, and clear branches or debris that could block access in the spring.

5. Remove Food and Discourage Pests

A quiet cabin with food and shelter can look like an all-inclusive winter resort to mice and other pests.

Remove perishable food and anything stored in paper, cardboard, or thin plastic packaging. Dry goods that remain should be placed in sturdy, sealed containers.

Clean countertops, sweep floors, empty trash cans, and remove crumbs from cabinets and appliances. Unplug and clean refrigerators or freezers that will not remain in use. Leave their doors slightly open after defrosting to help prevent mold and odors.

Inspect the cabin for gaps around:

• Utility and plumbing penetrations
• Dryer and exhaust vents
• Doors and windows
• Siding and trim
• The foundation
• Crawl space entrances

Seal appropriate openings and repair damaged screens or vent covers. Be careful not to block combustion-air openings, plumbing vents, or ventilation required by the cabin’s mechanical systems.

6. Find and Seal Air Leaks

Air leaks can make a winter cabin harder to heat and may expose plumbing near exterior walls or floors to colder temperatures.

Check for drafts around windows, exterior doors, electrical penetrations, plumbing lines, attic access points, and the areas where different building materials meet.

Smaller accessible gaps may be sealed with caulk or canned foam when the product is appropriate for the location. Larger or widespread air leakage may point to gaps in the cabin’s insulation and building envelope.

An energy assessment can help identify where the most significant leaks are located instead of relying on guesswork.

7. Complete a Final Walkthrough and Monitor the Cabin

Before locking the door, walk through the cabin one final time.

Depending on how the property will be left, your checklist may include:

• Confirming the water is off or the heat is working
• Unplugging unnecessary electronics and appliances
• Replacing batteries in smoke and carbon monoxide alarms
• Closing and locking windows
• Securing doors, sheds, boats, and equipment
• Removing trash and perishable food
• Checking the sump pump and backup system
• Forwarding mail or stopping deliveries
• Giving a trusted person access for emergency checks

A smart thermostat, low-temperature alarm, water-leak detector, or security camera can help you monitor the cabin remotely. These devices cannot prevent every problem, but an early alert may keep a small issue from turning into a springtime disaster.

How to Prepare a Cabin for Year-Round Use

If you want to use your cabin during Michigan winters, focus on maintaining heat, protecting the plumbing, and improving the building envelope.

Adding insulation can reduce heat transfer through the walls, attic, crawl space, and other parts of the cabin. Air sealing can also reduce drafts and uncontrolled air movement.

Foam insulation may be an option for creating an air seal in certain areas of the cabin. The right solution depends on the construction, existing insulation, moisture conditions, and how the property is used.

Insulation will not replace a reliable heat source or proper plumbing winterization. However, it can help a heated cabin maintain a more consistent indoor temperature and make winter visits more comfortable.

Make Your Michigan Cabin More Comfortable in Every Season

Winterizing a cabin is mostly about preventing problems while no one is there to notice them. Protect the plumbing, inspect the exterior, remove anything that could attract pests, and make a plan for monitoring the property.

If you want to enjoy your cabin after the snow starts falling, insulation and air sealing can help make the space easier to heat and more comfortable throughout the year.

Contact RetroFoam of Michigan to learn which insulation options may be the best fit for your cabin or cottage.

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Frequently Asked Questions About Winterizing a Cabin

When Should You Winterize a Cabin in Michigan?

Winterize your cabin before overnight temperatures begin dropping below freezing.

For many Michigan cabin owners, that means completing the work in early to mid-fall. The exact timing depends on the cabin’s location and the weather forecast.

Can You Leave a Cabin Unheated During the Winter?

A cabin may be left unheated if its plumbing and mechanical systems are properly winterized and its construction can tolerate the conditions.

Review your insurance requirements and consult qualified professionals before turning the heat off.

What Temperature Should You Leave a Cabin During Winter?

If the plumbing remains active, the American Red Cross recommends setting the thermostat no lower than 55 degrees.

Cabins with pipes in exterior walls, crawl spaces, or other vulnerable areas may require additional precautions.

Does Insulating Pipes Keep Them From Freezing?

Pipe insulation slows heat loss and can reduce the risk of freezing, but it does not guarantee protection.

Pipes can still freeze during prolonged cold or if the cabin loses heat.

How Do You Winterize a Cottage With a Well?

The process may include shutting off power to the well pump, draining the pressure tank and supply lines, and protecting other well components from freezing.

Because well systems vary, follow the equipment manufacturer’s instructions or work with a licensed plumber.

Should You Shut Off the Water When Leaving a Cabin for Winter?

Shutting off the water and draining the plumbing is generally the safest approach when closing an unheated cabin for the season.

If the water remains on, maintain heat and consider installing temperature and leak-monitoring devices.