Winterizing Tips for Towable RV Campers

Winterizing tips of towable RVs - 11.2025

Towable RVs like travel trailers, pop ups, teardrops, toy haulers, and hybrid campers have grown in popularity among younger and first-time RV owners. Their lower cost, lighter build, and simple mechanics make them a great way to start exploring the RV lifestyle without the commitment or price tag of a full motorhome.

When winter arrives, towable RVs need a slightly different winterization approach. These units are lighter, have less insulation, and often include fold-down or canvas sections that expose more areas to the cold. Preparing now helps avoid spring repairs and keeps your camper in good shape for next season’s trips.

For a deeper look at why so many new owners are choosing towable campers to begin with, and how window maintenance plays into their upkeep, take a look at one of our latest RV posts.

Why Winterization Matters for Towable RVs

Towable units face more exposure to freezing temperatures and moisture because:

  • Their plumbing systems are more compact.
  • Pop ups and hybrids include canvas or fold-down panels that lose heat and collect condensation.
  • Lightweight frames often have exposed plumbing and less underbelly insulation.
  • Windows in towable units are thinner and more likely to fog-up or form weak seals in cold weather.
Winterization Tips for Towable RV Campers

Drain and Protect the Water System

Cold temperatures can cause water to freeze inside pipes, tanks, and fittings. This leads to cracks and leaks in the spring, which are expensive to fix and can deter your road adventures

Follow these steps:

  • Drain fresh, gray, and black tanks
  • Drain and bypass the water heater
  • Flush the water lines and pump RV antifreeze through every faucet and the toilet
  • Remember the outdoor shower if your unit has one

This process helps protect your water system from costly damage and repairs in the spring.

 

Inspect and Seal the Exterior

Towable units are often stored outdoors during winter. Preparing the exterior helps keep moisture out and reduces the risk of structural issues.

  • Inspect the roof for cracks, especially around seams and vents
  • Reseal areas with aging or cracked caulking
  • Check windows for moisture, fogging or cracks
  • Cover roof vents, skylights, and air conditioning units

 

Protect Your Camper Windows and Decide When Replacement Is Needed

Moisture between glass panes can freeze and expand in winter. This often leads to permanent window damage for towables. Many owners choose camper glass replacement before storing their towable RV for the season to avoid problems in the spring.

Signs of window trouble include:

  • Fog trapped between glass panes
  • Cold air leaking around the frame
  • Moisture streaks inside the window
  • Reduced visibility due to etching or internal moisture

 

Prep the Interior for Moisture Control

Towable RV interiors cool down quickly as outdoor temperatures drop. This creates more condensation, which can lead to mold, odors, and window problems.

To reduce interior moisture:

  • Place moisture absorbers or a small dehumidifier inside
  • Keep cabinet and closet doors slightly open for airflow
  • Defrost and prop open the refrigerator
  • Use window shrink film for added insulation
  • Insert vent pillows into ceiling vents

Owners of pop ups and hybrid campers should make sure the canvas is completely dry before folding it for storage. Cold air trapped inside wet canvas leads to mildew and unpleasant odors by spring.

 

Stabilize and Cover the Camper

Towable RVs depend on proper stabilization because they do not have onboard engines or generator systems. A breathable cover helps protect paint, glass and seals throughout the colder months.

To prepare the exterior:

  • Place the camper on stabilizer jacks and take weight off the tires
  • Inflate tires to the recommended PSI
  • Lubricate jacks, hinges, steps and metal hardware
  • Use a breathable, RV-rated cover that allows moisture to escape

 

Store the Battery Correctly

Towable units usually rely on a single battery that powers lights, slide-outs and basic electrical systems. Cold weather drains battery life faster! Proper battery storage helps avoid the cost of a replacement in spring.

These steps help keep your battery healthy during storage:

  • Fully charge the battery before removing it
  • Store it in a temperature-controlled space
  • Use a smart trickle charger to maintain the charge

Prepare Your Towable RV for Winter and Protect Your Windows

Towable RVs do not have heating systems or heavy insulation like larger motorhomes. A single damaged or foggy window can lead to significant heat loss and more moisture inside the cabin. This creates a cycle of condensation that affects the whole interior.

Winterizing your towable RV now helps you start next season with fewer repairs and more time on the road. If your fall inspection reveals foggy windows, broken seals, or glass damage, our team can help.

Custom Glass Solutions offers camper glass replacement services nationwide through a network of certified glass shops, and offers a wide range of window styles and sizes for towable RVs today!

Call (855) 782 5246 or contact us online to get started. You can also use our handy Window Glass Search function to get going on a repair this year so that your RV is ready for action when the spring thaw commences in just a few short months!

Thanks for reading!