How to store a trailer outside for winter in Pennsylvania

If you need to store a trailer outside for winter, start with a firm, well-drained parking spot, clean and dry the trailer, address leaks and corrosion, and protect its tires and electrical components. A cover can help, but it cannot replace drainage, ventilation or routine checks. October is a good time for trailer owners around Philadelphia and Delaware County to handle these jobs before freezing weather arrives.

Whether you own an enclosed cargo trailer, landscape trailer or equipment hauler, the goal is the same: keep water from collecting, prevent avoidable deterioration and leave the trailer ready for a careful spring inspection.

Choose a level, stable surface that will support the trailer throughout wet weather and freeze-thaw cycles. Concrete or asphalt is usually easier to manage than soft soil. A properly prepared gravel pad can also work.

Avoid low spots where water pools and locations beneath damaged tree limbs. Leave enough space to walk around the trailer, inspect the roof from a safe position and reconnect your tow vehicle later.

• Chock the wheels before uncoupling, following the trailer manufacturer's instructions.
• Support the tongue jack on a suitable, stable pad rather than soft ground.
• Keep the trailer positioned so its designed drains can function.
• Check local property rules before committing to a long-term outdoor parking spot.

Do not use loose stacks of bricks or improvised supports. If you plan to raise the trailer to unload its tires, follow manufacturer-approved lifting and support procedures. Never work beneath a trailer supported only by a jack.

Remove leaves, grass, mulch, manure and other debris. Organic material holds moisture against floors, seams and structural members. Road salt and dirt also deserve attention before storage.

Wash the trailer using products appropriate for its finish, then let it dry thoroughly. Avoid forcing high-pressure water into wheel bearings, electrical connections or sealant joints.

For an enclosed trailer, empty anything that can spill, attract rodents or trap moisture against the floor. Clean corners and inspect beneath removable mats. Do not close up a wet interior and assume it will dry on its own.

For dump trailers, clear debris from the bed and drainage paths. Store the bed lowered unless the manufacturer specifies otherwise. Never enter beneath a raised dump bed without the manufacturer's required mechanical support procedure.

Storage rarely improves an existing problem. Check roof seams, door seals, vents, fasteners and exterior joints before winter weather tests them.

Look for soft flooring, water stains and damp corners inside enclosed trailers. On open trailers, examine crossmembers, spring hangers, ramps and the underside of the deck for damage or significant corrosion.

Use sealants compatible with the trailer's materials and existing sealant. Smearing an unknown product over a leaking seam may make a proper repair harder later.

Small finish chips may be suitable for surface preparation and touch-up using an appropriate coating system. Flaking structural steel, cracked welds or badly deteriorated mounting points need professional evaluation. Paint can protect sound metal, but it does not restore lost strength.

Check tire condition and set cold inflation pressure according to the trailer manufacturer's specifications and the applicable tire guidance. Do not lower tire pressure for storage or inflate beyond component limits.

Inspect for cracking, cuts, bulges and unusual wear. Tire age also matters, even when tread looks deep; use the tire manufacturer's inspection and replacement guidance rather than tread depth alone.

• Keep tires away from standing water, oils and solvents.
• Use properly fitted tire covers to reduce sunlight exposure.
• Recheck pressure during storage and before towing again.

If wheel bearings are due for service, handle that before parking the trailer. Follow the axle manufacturer's maintenance procedure rather than adding grease indiscriminately.

A dump trailer battery and an electric-brake breakaway battery may have different charging needs. Identify each battery and follow its manufacturer's storage instructions.

Where charging is appropriate, use a maintainer compatible with the battery chemistry and rated for the conditions where it will operate. Outdoor electrical connections must be suitable for wet locations. Avoid improvised extension-cord arrangements across driveways or standing water.

Inspect the trailer plug, wiring and light housings. Protect the disconnected plug with a suitable weather-resistant holder or cover, keeping it off the ground.

Never tow with a disabled breakaway system. If a battery is removed or disconnected for storage, leave yourself a clear reminder to reinstall, charge and test the system before moving the trailer on the road.

A trailer-specific, breathable cover can reduce exposure, provided it fits securely and does not rub sharp corners. Follow the cover manufacturer's instructions for securing it and protecting contact points.

A loosely draped tarp can flap against the finish or create pockets of water. An overly sealed covering can also trap condensation. Maintain designed ventilation while preventing pests from entering; remember to remove any temporary vent protection before use.

Check the trailer after major storms and periodically throughout winter. Look for pooling water, shifting supports, loose coverings and signs of pests. Never climb onto a slippery roof to remove snow; seek guidance on safe removal if accumulation becomes a concern.

Keep a short storage checklist with any repairs still needed. Before towing again, inspect tires, lights, brakes, bearings, coupler, safety chains and breakaway equipment. Confirm that registration and any required inspection are current with PennDOT or your state's motor vehicle agency.

Equip Trailers is an authorized NexHaul dealer at 10 Industrial Highway, Essington, PA 19029, offering new and used trailers plus repair, sandblasting and painting services. Browse our inventory or call (610) 521-5080 to discuss a trailer purchase or winter maintenance needs.