9 Essential Supplies for Installing Travel Trailer Winter Skirting

When sub-zero winter winds start howling underneath a travel trailer, the interior floor quickly turns into an icebox and plumbing lines become ticking time bombs. Installing a high-quality winter skirt is the single most effective way to trap warm air, protect sensitive tanks, and slash heating costs. Having the right commercial-grade supplies on hand transforms this grueling cold-weather chore into a seamless, permanent shield against the elements.

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Why Travel Trailer Winter Skirting is Essential

The open space beneath an RV is its absolute Achilles’ heel during cold weather. Frigid air sweeps underneath the chassis, stealing heat directly through the uninsulated floorboards and exposing critical wastewater valves to freezing temperatures. Blocking this wind tunnel with a durable skirt creates an insulating dead-air space that keeps the underbelly significantly warmer than the ambient air.

Relying solely on interior heating during sub-zero temperatures is an expensive battle. Standard RV furnaces consume massive amounts of propane, often draining a 30-pound tank in just a couple of days of hard freezing weather. A secure winter skirt acts as a reliable thermal buffer, drastically reducing the heating load and keeping energy costs manageable.

Beyond temperature control, a proper skirting system provides essential protection against winter pests seeking shelter. Mice, rats, and other small animals are drawn to the warmth radiating from the underside of an occupied rig. Sealing the perimeter prevents these pests from chewing through wiring harnesses or nested insulation.

Vinyl Skirting Material – Billboard Vinyls Heavy Duty Tarp

Creating the main outer barrier of a winter skirt requires a material that can withstand freezing wind, ice accumulation, and heavy ground contact. Standard thin tarps tear easily at pressure points and degrade rapidly under harsh UV exposure. Billboard Vinyls Heavy Duty Tarps offer an industrial-strength solution by utilizing recycled, ultra-thick PVC material designed to survive years of outdoor exposure.

These vinyl tarps are typically constructed from 13-ounce to 20-ounce PVC, making them completely waterproof and virtually immune to wind tear-outs. Because they are salvaged from commercial billboards, they are incredibly cost-effective compared to custom-fabricated RV skirts. The smooth black or white backing provides a clean, professional aesthetic when installed correctly around the trailer.

• Weight options: 13 oz to 20 oz per square yard
• Material: Heavy-duty PVC vinyl
• Resistances: UV, mold, mildew, and tearing
• Standard sizes: Varies (frequently sold in large billboard dimensions like 12’x24′ or 14’x48′)

Before purchasing, measure the entire perimeter of the travel trailer and add at least one foot to the height measurement to allow for a ground-anchoring flap. This material is heavy and requires sharp tools to cut, so prepare for some manual labor during the sizing process. It is the ultimate choice for long-term winter campers needing maximum durability, but it may be too bulky for weekenders looking for a quick, lightweight setup.

Rigid Foam Insulation – Owens Corning FOAMULAR 150

While vinyl blocks the wind, it offers very little actual insulation value to stop radiant heat loss. Backing the vinyl with rigid foam boards, or using them as a primary skirting wall, creates a highly efficient thermal barrier. Owens Corning FOAMULAR 150 provides the structural rigidity and thermal resistance needed to keep the underbelly warm in extreme climates.

This extruded polystyrene (XPS) foam board features a closed-cell structure that does not absorb moisture, making it perfect for direct ground contact in wet snow or mud. It delivers a solid R-value of 5 per inch of thickness, keeping heat trapped where it belongs. The boards are lightweight, easy to score with a utility knife, and rigid enough to stand upright against moderate wind pressure.

• R-Value: R-5 per inch of thickness
• Compression strength: 15 PSI
• Moisture resistance: Highly resistant to water absorption
• Sheet size: Typically 4′ x 8′ sheets with varying thicknesses

These boards must be handled with care during transport as they can crack if bent or dropped on their corners. In high-wind areas, they must be securely anchored or weighted down, as their lightweight nature makes them prone to blowing away if left unsealed. This insulation is a necessity for sub-zero stationary living, but it is too bulky to transport easily for highly mobile RVers.

Sheathing Tape – Tuck Tape Construction Adhesive Tape

When piecing together rigid foam boards, even the tiniest gap can allow freezing air to compromise the entire system. A specialized construction adhesive tape is required to seal these seams and prevent wind from drafting behind the insulation. Tuck Tape Construction Adhesive Tape is formulated specifically to bond to plastic sheathing and foam surfaces under extreme conditions.

This heavy-duty tape utilizes a high-tack acrylic adhesive that actually cures stronger over time and remains functional in freezing temperatures. The bright red polypropylene backing is highly visible, UV-resistant, and completely waterproof. It prevents cold air, moisture, and pests from finding their way through the seams of the foam skirting.

• Adhesive type: High-tack solvent-based acrylic
• Temperature range: Application down to -10°C (14°F)
• Backing: UV-stabilized polypropylene film
• Width: Typically 2.36 inches (60 mm)

Users must apply this tape to clean, dry surfaces, as frost or dirt will prevent the adhesive from bonding correctly. The adhesive is incredibly aggressive, meaning once it touches a surface, it cannot be easily repositioned without tearing the foam. This tape is indispensable for securing foam board joints, but it is not intended for direct use on the trailer’s painted fiberglass exterior due to the risk of residue and peeling.

Snap Fasteners – General Tools 1265 Snap Fastener Kit

To attach the top of the heavy vinyl skirt to the travel trailer, a secure but removable connection system is essential. General Tools 1265 Snap Fastener Kit provides the heavy-duty hardware required to mount vinyl skirting directly to the rig’s metal trim. This allows the skirt to be tightly secured for the winter and easily removed when spring arrives.

The kit includes nickel-plated brass snaps that resist rust and corrosion from road salt and moisture. The manual flaring tool and anvil included in the package make it simple to punch and set the snaps directly into the thick vinyl material. This mechanical connection holds strong against high winds while maintaining a clean, streamlined appearance along the trailer’s perimeter.

• Material: Nickel-plated brass
• Pieces: 6 sets of screw studs and button fasteners (expandable with refills)
• Installation tool: Flaring tool and anvil included
• Compatible materials: Canvas, vinyl, and heavy fabrics

Installing the screw studs requires pre-drilling small pilot holes directly into the trailer’s aluminum trim. Applying a small dab of silicone sealant to each screw thread before insertion is vital to prevent water intrusion. This kit is perfect for RV owners comfortable with making permanent, professional-grade installations on their rigs, but it is not suitable for those renting a trailer or avoiding modifications.

Waterproof Tape – Gorilla Waterproof Patch & Seal Tape

During installation, unexpected tears can occur, or tricky transition areas around slide-outs and hitches may require an absolute seal. Gorilla Waterproof Patch & Seal Tape serves as the ultimate heavy-duty backup for airtight sealing and quick repairs. It creates an instant, rubberized bond that stops water and wind drafts in their tracks.

This tape features an extra-thick adhesive layer and a UV-resistant backing that conforms to uneven surfaces, including ribbed siding and underbelly fabrics. It remains flexible even in sub-zero temperatures, allowing it to move with the trailer without cracking or peeling. It is the perfect solution for sealing the top edge of the vinyl skirt to the trailer body when drilling snaps is not an option.

• Backing material: Rubberized layer
• Width options: 4-inch or 8-inch rolls
• Flexibility: Stretches and conforms to uneven surfaces
• Color options: Black, white, and clear

The adhesive on this tape is incredibly permanent and will leave a thick, gummy residue if removed. If used on the RV’s painted exterior, care must be taken during removal to avoid peeling the paint or decals. It is ideal for permanent patches and high-stress seal points, but it is not recommended for seasonal, temporary attachments that must be cleanly removed each spring.

Ground Anchors – Eurmax Galvanized Steel Camping Stakes

The bottom flap of a vinyl skirt must be firmly anchored to the earth to prevent fierce winter winds from lifting the material. Eurmax Galvanized Steel Camping Stakes provide the heavy-duty holding power needed to pin the skirt flap securely into frozen soil or packed gravel. Without strong anchors, wind will get under the skirt, turning it into a giant sail that can tear away from the RV.

These 12-inch stakes are constructed from galvanized steel, preventing rust even when buried in wet soil or snow for months. The ribbed shaft provides superior friction, while the flat T-stopper head allows for easy hammering with a mallet. They are thick enough to drive into hard-packed ground without bending or breaking.

• Length: 12 inches
• Material: Galvanized steel
• Head design: T-stopper plastic top with hook
• Pack count: Typically sold in packs of 10 or more

Driving these stakes into frozen ground requires a heavy hammer or mini-sledge, as standard plastic mallets will bounce off. In the spring, extracting them from thawed mud or hard-packed clay may require a pry bar or claw hammer. These stakes are perfect for trailers parked on dirt, grass, or gravel, but they are useless on solid concrete pads where sandbags must be used instead.

Heat Cable – EasyHeat AHB Water Pipe Heating Cable

Even with a perfectly insulated skirt, an active water supply line entering the trailer can still freeze during extreme cold snaps. EasyHeat AHB Water Pipe Heating Cable provides active freeze protection by applying direct heat along the length of the freshwater hose. This ensures a continuous water supply even when ambient temperatures plummet well below freezing.

The cable features a built-in thermostat that automatically energizes the heating element only when the temperature drops near freezing, saving energy on warmer days. It is designed to be run straight along the pipe or hose, delivering consistent heat without overheating the plumbing. The durable outer jacket protects the electrical components from moisture inside the skirted space.

• Thermostat trigger: Turns on at 38°F (3°C)
• Power consumption: 7 watts per foot
• Compatibility: Metal and rigid plastic pipes
• Voltage: 120V AC

Installers must wrap the heating cable and the water line together with fiberglass or foam pipe insulation for the system to work efficiently. Never overlap the heating cable on itself, as this creates a severe fire hazard and will damage the cable. This system is essential for any winter RVer using city water connections, but it is unnecessary for dry-camping setups relying on internal fresh tanks.

Utility Knife – Stanley Classic 99 Retractable Knife

Installing winter skirting requires precise, clean cuts through thick PVC vinyl, rigid foam boards, and heavy adhesive tapes. A dull or flimsy knife will tear the material, leading to sloppy edges and weak seal points. The Stanley Classic 99 Retractable Utility Knife offers the cutting control and rugged construction needed to handle these tough materials.

This knife features a classic, die-cast zinc body that can withstand drops onto frozen concrete without cracking. The interlocking nose design safely secures the blade in three retractable positions, preventing the blade from slipping under heavy pressure. Changing blades is straightforward, and the handle holds up to ten spare blades to keep the project moving.

• Body material: Die-cast zinc
• Blade positions: 3 retractable positions
• Storage: Holds up to 10 blades in handle
• Overall length: 6 inches

Cutting through thick billboard vinyl or gritty foam boards will dull utility blades incredibly fast. Keep a pack of heavy-duty replacement blades nearby and change them as soon as the knife begins to drag or tear the material. This tool is a universal necessity for any skirting installation, though users should wear cut-resistant gloves to prevent accidents when working in cold conditions.

Staple Gun – Arrow Fastener T50 Heavy Duty Staple Gun

When building a supporting wooden frame for foam skirting or securing vinyl flaps to wood blocks, a reliable mechanical fastener is indispensable. Arrow Fastener T50 Heavy Duty Staple Gun delivers the driving power needed to sink staples deep into wood studs or ground plates. It provides a fast, permanent hold that resists the constant tugging of wind-blown vinyl.

This manual staple gun features an all-steel construction with a durable chrome finish designed to resist rust and wear. Its jam-resistant mechanism ensures smooth operation even when working in freezing temperatures. The handle is contoured to maximize leverage, allowing the user to drive heavy staples with minimal hand fatigue.

• Staple size compatibility: 1/4-inch to 9/16-inch T50 staples
• Body construction: All-steel with hardened steel working parts
• Mechanism: Jam-resistant compression spring
• Safety: Handle lock for safe storage

To prevent the staples from rusting and failing over the winter, use stainless steel or galvanized staples rather than standard steel ones. Operating a manual staple gun over a large project requires substantial hand strength, so taking frequent breaks is recommended. This tool is perfect for installers utilizing wooden ground frames, but it is not needed for strictly snap-on or tape-on skirting methods.

How to Properly Install Your Trailer Skirting

Begin by thoroughly cleaning the entire perimeter of the travel trailer, removing dirt and debris from the frame and the ground. Measure the height from the RV’s mounting line to the ground at several points, as uneven terrain will require different cut lengths. Cut the vinyl skirting panels, ensuring an extra 8 to 12 inches of material is left at the bottom to lay flat on the ground as an anchoring flap.

Next, attach the top edge of the skirting to the trailer’s trim using snap fasteners or heavy-duty tape, working from one corner of the rig to the other. Pull the material taut but avoid stretching it too tightly, as freezing temperatures will cause the vinyl to contract and put stress on the connections. Overlap adjacent panels by at least 3 inches and seal the vertical seams tightly with sheathing tape to block cold drafts.

Finally, fold the excess material at the bottom outward onto the ground to create a flat sealing flap. Drive heavy-duty galvanized stakes through the flap into the ground, or weight it down heavily with sandbags or concrete blocks. Seal any remaining gaps around slide-outs, hitches, and jacks with flexible tape to complete the airtight barrier.

Crucial Tips for Maintaining Your Skirt in High Winds

High winds are the single greatest threat to any RV skirting system, as a loose corner can act like a sail and rip the entire skirt away. Routinely inspect the perimeter of the rig to ensure no gaps have opened and that all fasteners remain secure. Pay close attention to corners and areas near the hitch, where wind can easily find a way underneath.

Do not rely solely on ground stakes if the trailer is parked in loose soil, dry sand, or during heavy freeze-thaw cycles. Layering heavy materials like gravel bags, heavy firewood, or concrete blocks over the ground flap creates a uniform seal that resists lifting. This continuous weight distribution prevents high winds from getting under the vinyl flap and popping the stakes out of the ground.

Creating a completely airtight skirted space can sometimes lead to a vacuum effect that pulls or pushes on the vinyl during severe storms. Leaving a small, protected ventilation point or utilizing rigid backing like foam boards behind the vinyl helps stabilize the structure. This simple pressure equalization prevents the skirt from flapping violently or collapsing inward when the wind howls.

Conclusion

Taking the time to source high-quality materials and secure them properly pays dividends all winter long in the form of warm floors, intact plumbing, and lower heating bills. With a solid skirt in place, any travel trailer can become a cozy, energy-efficient oasis, no matter how harsh the winter weather gets.