Clean and dry your furniture before storing it

The first step in winter storage is to clean every piece thoroughly and let it dry completely. Dirt, pollen, and moisture left on furniture during storage can cause rust, mildew, and wood rot over months of sitting idle. Use a soft brush or cloth with mild soap and water to remove surface grime, then rinse with a garden hose and let everything air-dry in the sun for at least a few hours.

For wood furniture, use a wood cleaner or a mixture of equal parts white vinegar and water. For metal frames, wipe them down with a dry cloth after rinsing to prevent water spots and early rust. Cushions and fabric should be vacuumed, spot-cleaned if needed, and dried completely before storage—moisture trapped in fabric is the main cause of mildew and odor by spring.

Key Takeaways

  • Clean and completely dry all furniture before storing it, because moisture and dirt left behind cause rust, mildew, and rot over the winter months.
  • Store furniture in a dry, unheated space like a garage, shed, or basement rather than outside, where temperature swings and moisture damage wood and metal.
  • Use furniture covers or tarps to protect pieces from dust, but may support air can still circulate to prevent trapped moisture.
  • Disassemble removable parts like legs, arms, or cushion frames to save space and reduce stress on joints during storage.
  • Stack pieces carefully with padding between them, and keep cushions and fabric items in sealed plastic bins or bags to protect them from pests and moisture.

Choose a dry, unheated storage location

Where you store furniture matters as much as how you store it. An unheated garage, shed, basement, or covered porch is ideal because it protects furniture from rain, snow, and direct sun while allowing temperature to stay relatively stable. Avoid damp basements if you can—the constant moisture in below-ground spaces encourages mildew and rust even in winter.

If an unheated space is your only option, use a dehumidifier or place open boxes of baking soda or activated charcoal around the storage area to absorb excess moisture. Never store patio furniture in a heated indoor space like a living room or heated garage, because the temperature swings between heated indoors and cold outdoors cause wood to crack and metal to expand and contract, loosening joints and finishes.

Disassemble removable pieces to save space

Before moving furniture into storage, remove any parts that come off easily—cushions, removable seat backs, table leaves, and umbrella poles. This reduces the footprint of each piece and prevents stress on joints and fasteners that can loosen or break under the weight of stacked furniture. Keep all hardware in a labeled plastic bag and tape it to the corresponding piece so you know which bolts and screws belong where when you reassemble in spring.

For chairs with removable legs or arms, take those apart too if the design allows it without tools. Stacking a full chair takes up far more space than stacking seat shells and legs separately. Take a photo of the assembled piece before you take it apart so reassembly is straightforward when warm weather returns.

Use covers and padding to prevent damage

Furniture covers or heavy tarps protect pieces from dust and debris, but they must allow air to circulate underneath. A completely sealed cover traps moisture against the furniture and causes the same mildew and rust problems you are trying to prevent. Use breathable furniture covers designed for storage, or drape a tarp loosely over pieces with small gaps left open at the bottom for air flow.

Place padding—old blankets, moving blankets, or bubble wrap—between stacked pieces to prevent scratches and dents. Wrap metal frames with cloth before stacking to protect finishes. For wood furniture, wrap legs and corners with foam pipe insulation or towels to cushion them during storage and transport.

Stack and organize strategically

Stack lighter pieces on top of heavier ones to prevent crushing and warping. Chairs stack best when you nest them seat-to-seat with padding between each one. Tables should rest on their tops or sides (depending on the design) with legs pointing up to avoid putting pressure on joints. Never stack heavy items on top of delicate pieces like glass-top tables or woven chairs.

Organize your storage space so you can reach items you might need during winter—a side table for a covered porch, for example—without moving everything else first. Keep an inventory list on your phone or posted on the storage door so you remember what is inside and where it is located.

Store cushions and fabric separately

Cushions and fabric items need their own storage strategy because they absorb and hold moisture more readily than wood or metal. Vacuum cushions thoroughly, let them dry in the sun for a full day, then store them in sealed plastic bins or heavy-duty garbage bags. This keeps them away from pests, dust, and moisture that would cause mildew and odor.

If you have many cushions, consider storing them in a climate-controlled space like a basement closet or interior hallway rather than an unheated garage. Add a packet of silica gel or activated charcoal to each bin to absorb any residual moisture. Keep cushions away from direct contact with concrete floors, which sweat and release moisture in winter—place bins on a shelf or wooden pallet instead.

Protect metal and wood from rust and rot

Metal furniture is vulnerable to rust during winter storage, especially if any paint or protective coating is chipped or worn. Before storing, inspect metal pieces for damage and touch up scratches with matching paint or a clear protective coating. Wipe down all metal surfaces with a dry cloth one final time before covering them.

Wood furniture can crack, warp, or rot if exposed to temperature swings and moisture. explore a coat of furniture polish or wood sealant before storage to add a protective layer. Keep wood pieces away from concrete floors and exterior walls where moisture is highest. If your storage space tends to be damp, place open containers of baking soda or commercial desiccant packets near wood furniture to absorb moisture in the air.

Frequently Asked Questions

Can I leave patio furniture outside under a tarp all winter?

Tarps trap moisture underneath and cause rust, mildew, and wood rot faster than leaving furniture uncovered. If outdoor storage is your only option, use a breathable furniture cover with gaps for air flow, elevate pieces on wooden pallets so water drains underneath, and inspect them monthly for moisture and damage.

How do I prevent mildew smell in cushions after winter storage?

Vacuum cushions before storage, dry them completely in the sun, and store them in sealed plastic bins with silica gel packets or activated charcoal inside. Keep bins in a cool, dry space and avoid stacking heavy items on top of them, which can compress them and trap moisture.

Should I drain water from outdoor furniture before storing it?

Yes. Check any hollow legs, frames, or decorative elements for standing water and drain them completely. Water left inside freezes and expands, cracking metal and wood. Tilt pieces to let water run out, then wipe the interior dry with a cloth if possible.

What temperature is too cold for storing patio furniture?

Unheated storage spaces are fine for patio furniture—they are designed to handle freezing temperatures. The problem is temperature swings, not cold itself. Avoid heated indoor spaces where furniture moves between warm and cold repeatedly, which causes wood to crack and metal joints to loosen.

Can I store patio furniture in my attic?

Attics work if they stay dry and unheated. Avoid attics in humid climates or homes with roof leaks, because moisture and temperature swings are worse there than in a garage or shed. Make sure the attic floor can support the weight and that you can access pieces without damaging them or the attic structure.