Waterproof Versus Insulated RV Skirting - What’s Best for Your Trailer

For RV owners who enjoy year-round adventures, skirting is more than just an optional accessory. It is an essential part of keeping your trailer comfortable, efficient, and well-protected. Skirting provides a barrier around the base of your RV, shielding the undercarriage from weather elements, reducing heat loss, and protecting plumbing from freezing temperatures.

But when it comes to choosing the right skirting, one big decision often comes up: waterproof vs. insulated RV skirting. Both have their advantages, and the right choice depends largely on your travel style, climate, and how you use your rig.

If you are considering RV skirting for travel trailer living, here is a deep dive into Waterproof vs. Insulated RV Skirting, covering benefits, drawbacks, and ideal use cases. 

Why Skirting Matters for RV Owners

Before comparing waterproof and insulated types, it is worth understanding the general benefits of skirting: 

• Temperature Regulation: Keeps the underside warmer in winter and cooler in summer. 

• Plumbing Protection: Prevents pipes from freezing and bursting. 

• Energy Efficiency: Reduces the need for extra heating or cooling inside the RV. 

• Wind Shielding: Minimizes drafts that make interiors uncomfortable. 

• Aesthetic Appeal: Gives the RV a finished, grounded look. 

Whether you are camping in snowy mountains or windy plains, skirting plays a crucial role in maintaining comfort and safety. 

Understanding Waterproof RV Skirting 

What It Is 

Waterproof RV skirting is designed to keep moisture, rain, and snowmelt from seeping under your RV. It is typically made from durable materials like heavy-duty vinyl, marine-grade fabrics, or treated polyester. 

Benefits 

1. Moisture Protection: Prevents water from pooling under your RV and damaging the frame or flooring. 

2. Durability in Wet Climates: Ideal for rainy regions or areas prone to heavy snow melt. 

3. Easy to Clean: Most waterproof skirts can be wiped down or hosed off with minimal effort. 

4. Mold and Mildew Resistance: Prevents moisture buildup that could lead to unhealthy mold growth. 

   
   

Drawbacks 

• Limited Insulation: While it stops moisture, it does not trap heat as effectively as insulated skirting. 

• Not Ideal for Extreme Cold: In freezing temperatures, pipes may still need additional insulation or heat tape. 

Best For: RV owners who travel through wet, rainy, or coastal areas more than frigid winter climates. 

Understanding Insulated RV Skirting 

What It Is 

Insulated RV skirting includes a thermal layer that helps retain heat in the undercarriage during winter and block heat in summer. Common materials include foam board, insulated fabric panels, or layered vinyl with insulation inside. 

Benefits 

1. Superior Temperature Control: Keeps plumbing and tanks from freezing in winter. 

2. Energy Savings: Reduces the workload on heaters and air conditioners. 

3. Four-Season Comfort: Works for both hot and cold climates. 

4. Noise Reduction: Provides a sound barrier from outside noise. 

   
   

Drawbacks 

• Not Always Waterproof: While many insulated skirts are water-resistant, they may require an additional waterproof barrier in very wet conditions. 

• Higher Cost: Insulated options are generally more expensive. 

• Bulkier Storage: When not in use, insulated panels can take up more space. 

Best For: Full-time RVers or those spending long periods in extreme cold or heat. 

Waterproof Versus Insulated RV Skirting

When choosing between waterproof and insulated skirting, here are some major factors to weigh: 

1. Climate 

• Cold and Dry Winters: Insulated skirting is the clear winner for keeping plumbing safe and living spaces warm. 

• Wet and Mild Winters: Waterproof skirting will keep you dry and protect against mold. 

2. Travel Frequency 

• If you move often, waterproof skirting is generally lighter and easier to install or remove. 

• Insulated skirting is better for long stays in one place, especially in cold climates. 

3. Budget

Waterproof skirting is often more affordable upfront, while insulated skirting is a long-term investment that may save on heating costs. 

4. Aesthetics and Fit 

Both types come in custom-fit or adjustable designs, but insulated versions can sometimes appear bulkier. 

How to Install RV Skirting for Maximum Effectiveness 

Regardless of whether you choose waterproof or insulated RV skirting for travel trailer use, proper installation is key: 

1. Measure Accurately: Get the exact height and length from the ground to your RV’s base at multiple points. 

2. Seal All Gaps: Use foam blocks or weather stripping to close small openings that could allow drafts. 

3. Anchor Securely: Use ground stakes, weights, or adhesive strips to prevent flapping in the wind. 

4. Provide Ventilation: If using waterproof skirting in warm climates, ensure some airflow to prevent condensation. 

5. Add Supplemental Heating: In extreme cold, consider placing a small, thermostatically controlled heater under the RV with insulated skirting. 

Pros and Cons at a Glance 

Feature	Waterproof Skirting	Insulated Skirting
Moisture Protection	Excellent	Moderate
Temperature Control	Low to Moderate	Excellent
Cost	Lower	Higher
Ideal Climate	Wet, mild climates	Cold or extreme climates
Ease of Handling	Lightweight and portable	Bulkier, more setup time

Hybrid Solutions: The Best of Both Worlds 

Some RV owners opt for a hybrid approach, combining waterproof outer layers with insulated inner panels. This provides the moisture resistance of waterproof skirting with the thermal benefits of insulation. 

Hybrid solutions can be more expensive and complex to install, but they offer the most versatility, especially if your travels take you through multiple climate zones in a single season. 

 

Maintenance Tips for Long-Lasting Skirting 

No matter which type you choose, your skirting will last longer with proper care: 

• Clean Regularly: Remove dirt, mud, and debris to prevent wear. 

• Inspect for Damage: Look for tears, worn seams, or broken fasteners after each trip. 

• Store Properly: Dry completely before storing in a cool, dry place to avoid mold growth. 

• Reapply Waterproofing (if applicable): Some waterproof fabrics benefit from periodic spray treatments to maintain their water resistance. 

Cost Considerations 

• Waterproof Skirting: Typically ranges from $500 to $1,500 depending on size, material, and custom fitting. 

• Insulated Skirting: Usually $1,000 to $3,000, with custom builds potentially higher. 

• Hybrid Systems: Can exceed $3,000 but offer both moisture and thermal protection. 

While the upfront cost of insulated skirting is higher, savings on heating and potential plumbing repair costs can make it worthwhile for those camping in harsh winter climates. 

Choosing the Right Skirting for You 

Here is a quick decision guide: 

Choose Waterproof Skirting If: 

• You spend most of your time in wet but mild climates. 

• You need something lightweight and easy to install or remove. 

• You are on a tighter budget. 

Choose Insulated Skirting If: 

• You camp in areas with freezing winters or extreme heat. 

• You stay in one place for long periods. 

• You want maximum comfort and efficiency.  

Consider Hybrid Skirting If: 

• You travel through varying climates. 

• You want both moisture resistance and superior insulation.

Conclusion 

Waterproof Versus Insulated RV Skirting options both have their strengths, and the best choice depends on your climate, travel style, and budget. Waterproof skirting excels at keeping your RV’s undercarriage dry and mold-free, making it ideal for wet climates. Insulated skirting, on the other hand, is unmatched for temperature control and energy efficiency in extreme conditions. 

If you want to maximize your RV’s comfort, efficiency, and durability, whether you choose waterproof, insulated, or hybrid skirting, it is important to invest in high-quality materials and proper installation. Partnering with a trusted safety equipment manufacturing company like Gem Air-Sea Systems ensures you get durable, well-designed products that stand up to the challenges of year-round RV living.