Install Secondary Door Locks on RV Entry Doors to Prevent Wind-Related Blow-Outs During Travel

💡 Key Recommendation

Add a barrel bolt or secondary deadbolt to your RV door before your next road trip

RV entry door blow-outs during highway travel represent one of the most catastrophic and dangerous failures that can occur on the road. When factory-installed plastic latches fail under wind pressure, crosswinds, or aerodynamic forces, doors can violently swing open at highway speeds, creating immediate hazards including loss of vehicle control, ejection of passengers or cargo, structural damage to the door and frame, and potential multi-vehicle accidents. The sudden loss of aerodynamics and shift in vehicle weight distribution can cause the RV to swerve unpredictably, putting occupants and other motorists at extreme risk.

Secondary door locks serve as critical backup systems that engage independently of the primary latch mechanism, providing redundant security against wind-induced door failures. Unlike factory latches that rely on single-point plastic components prone to stress fractures and wear, secondary locks distribute forces across multiple mounting points and utilize stronger materials like steel or heavy-duty aluminum. Installing these backup systems transforms a single point of failure into a multi-layered security approach, dramatically reducing the likelihood of catastrophic door blow-outs and providing peace of mind during highway travel, especially in windy conditions or when passing large vehicles that create significant air turbulence.

📋 Industry Standards & Best Practices

Install heavy-duty deadbolt-style secondary locks that engage independently of the primary door handle and latch system, positioning them at least 12 inches away from the main latch to distribute stress across different areas of the door frame

Choose secondary locks with steel construction and mounting hardware rated for at least 250 pounds of lateral force, ensuring they can withstand the substantial wind pressures generated at highway speeds

Position secondary locks at mid-door height rather than near existing hardware to avoid weakening the door frame structure, and always pilot drill mounting holes to prevent splitting or cracking of the door frame material

One of the most terrifying and dangerous RV failures occurs when entry doors blow open during highway travel, yet most RVers rely solely on factory-installed plastic latches that can fail without warning. The aerodynamics of highway travel create significant pressure differentials around your RV, and when combined with worn door seals or slightly warped door frames, these forces can overwhelm factory latching mechanisms.

The physics behind door blow-outs involve both positive and negative pressure zones created as air flows around your RV at highway speeds. The door’s exterior face experiences varying pressure while the interior maintains relatively stable pressure, creating a pumping effect that constantly stresses the latch mechanism. Factory RV door latches are typically lightweight plastic assemblies designed more for convenience than security, with single-point failure modes that leave no backup protection.

Installing a secondary locking mechanism provides crucial redundancy. The most effective solution is a heavy-duty barrel bolt positioned 6-8 inches above the primary latch. Choose a bolt with at least a 4-inch throw length and solid brass or stainless steel construction. Avoid lightweight aluminum versions that can bend under stress. The Hickory Hardware P1976-SN or similar commercial-grade barrel bolt provides the strength needed for highway conditions.

Installation requires precise alignment between the door and frame. Mark the bolt position when the door is properly closed and sealed, ensuring the bolt doesn’t interfere with the door’s weather stripping. Use a drill bit slightly smaller than the mounting screws to prevent splitting the door frame, and apply marine-grade thread locker to prevent screws from backing out due to road vibration.

Alternatively, consider installing a secondary deadbolt system like those used on residential doors. The Kwikset 660 single-cylinder deadbolt can be adapted for RV use, though you’ll need to modify the strike plate to account for the RV’s thinner door frame construction. This option provides keyed security when parked while maintaining the safety benefit during travel.

For maximum protection, implement a pre-travel inspection routine that includes checking both locking mechanisms. Test the primary latch for smooth operation and verify there’s no excessive play or loose mounting hardware. Examine door seals for compression and proper alignment, as compromised seals increase pressure differential effects.

The secondary lock should engage smoothly without forcing. If resistance occurs, the door may be slightly warped or the frame shifted, indicating potential stress points that could contribute to failure. Address alignment issues before travel rather than forcing components into place.

Some RVers install visual indicators like small mirrors positioned to show door status from the driver’s seat, though this shouldn’t replace proper pre-travel verification. The few minutes spent installing and checking secondary door locks could prevent a catastrophic highway incident that endangers both your family and other motorists while potentially saving thousands in insurance claims and vehicle damage.

Step 1

Measure and mark the installation location for your secondary lock on both the door and frame, typically positioning it 12-18 inches from the primary latch and at a comfortable operating height, then use a level to ensure proper alignment between door and frame components

Step 2

Drill pilot holes for all mounting screws using the appropriate bit size for your door material (typically 1/8″ for aluminum doors, 3/32″ for fiberglass), taking care to avoid hitting existing wiring or plumbing that may run through the door frame

Step 3

Install the lock cylinder or bolt mechanism on the door first, securing it with the provided mounting screws and ensuring smooth operation before proceeding to the frame-mounted receiver or strike plate

Step 4

Mount the corresponding strike plate or receiver on the door frame, test the lock engagement multiple times to verify smooth operation and proper alignment, then apply thread-locking compound to all mounting screws to prevent loosening from road vibration

Initial investment: $28–$67 for quality secondary door locks plus $12–$18 for mounting hardware and thread-locking compound

Annual maintenance: $3–$8 annually for lock lubricant and periodic hardware inspection, or $45–$75 if professional maintenance is required

5 year projection: $40–$85 upfront installation + ~$15–$40 maintenance over 5 years = ~$55–$125 total over 5 years

Cost per year: $11–$25 per year averaged over five years of use

RVers traveling through high-wind corridors like Wyoming’s I-80, Texas panhandle, or Great Plains regions should prioritize heavy-duty secondary locks rated for higher force loads due to sustained crosswinds exceeding 40 mph

Coastal RVers in salt air environments should choose stainless steel or corrosion-resistant secondary locks and apply marine-grade lubricants more frequently to prevent salt-induced binding or corrosion

Mountain region travelers face unique challenges from sudden wind gusts and pressure changes at elevation, making spring-loaded or positive-engagement secondary locks preferable over gravity-dependent designs

A Class A motorhome owner traveling I-40 through New Mexico experienced primary latch failure during 35 mph crosswinds, but their secondary deadbolt lock prevented door blow-out and allowed safe roadside stopping to address the primary latch issue

Travel trailer owners report that secondary locks provide crucial backup when passing large trucks creates sudden air pressure differentials that can overwhelm factory plastic latches, particularly on lightweight trailer doors

Full-time RVers document instances where secondary locks prevented door failures during overnight storms when wind gusts and changing air pressure would have otherwise compromised primary latching mechanisms

Many RVers believe factory door latches are sufficient for highway travel, but plastic factory components often fail without warning under sustained wind pressure, while secondary locks provide essential redundancy using stronger materials and independent mounting points

Some assume secondary locks will interfere with normal door operation or emergency egress, when properly installed secondary locks operate smoothly and can actually improve door security without impeding quick exit in emergencies

RV owners often think secondary locks are only necessary for older RVs, but even new RVs with factory latches benefit from secondary locks since wind-induced door failures can occur regardless of the RV’s age or primary latch condition

Deadbolt-style secondary locks offer the strongest holding power and most reliable engagement but require more complex installation and precise alignment between door and frame components. Sliding barrel bolt locks provide simpler installation and good holding strength but may be more susceptible to vibration loosening over time. Spring-loaded pin locks offer quick engagement and release but typically have lower force ratings than deadbolt systems. Cam-style secondary locks provide moderate holding power with relatively simple installation but may not distribute forces as effectively as deadbolt designs. For maximum protection against wind-induced blow-outs, heavy-duty deadbolt secondary locks consistently outperform other options in both holding strength and long-term reliability.

Drill with appropriate bits for pilot holes (typically 1/8″ and 3/32″)

Screwdriver set, level, measuring tape, and thread-locking compound

⏱️ Time & Cost Summary

Estimated Time: 2-3 hours for complete installation including measurement, drilling, mounting, and testing of secondary lock system

Estimated Cost: $40–$85 total including secondary lock hardware, mounting supplies, and basic tools if not already owned

Lubricate lock mechanism every 6 months, inspect mounting screws quarterly for tightness, and test operation monthly during travel season

Always engage secondary locks before highway travel and ensure all passengers know how to operate them for emergency egress. Never rely solely on secondary locks without confirming primary latch engagement, and regularly inspect both systems for wear or damage.

What exactly is a wind-related blow-out on RV entry doors and why do secondary locks prevent it?

What types of secondary door locks work best for preventing wind blow-outs on RV entry doors?

Where should I position secondary door locks on my RV entry door for maximum wind blow-out protection?

Can I install secondary door locks myself or do I need professional help to prevent wind blow-outs?

How much wind force can secondary door locks withstand to prevent RV door blow-outs?

Will secondary door locks interfere with my RV’s primary door latch when preventing wind blow-outs?

How do I remember to engage secondary door locks before traveling to prevent wind blow-outs?

Are there specific secondary lock brands recommended for RV door wind blow-out prevention?

What tools do I need to install secondary door locks for wind blow-out prevention on my RV?

How often should I inspect secondary door locks installed for wind blow-out prevention?

Can secondary door locks cause damage to my RV door frame when preventing wind blow-outs?

Do I need secondary locks on both RV entry doors if my motorhome has two doors?

What’s the difference between secondary locks for security versus wind blow-out prevention?

How do secondary door locks perform in extreme weather conditions for wind blow-out prevention?

Will adding secondary door locks void my RV warranty regarding wind blow-out damage?

Professional RV technicians report that secondary door locks prevent 90% of wind-related door failures when properly installed and maintained, making them one of the most cost-effective safety upgrades available

Experienced RV drivers emphasize that secondary locks should be engaged every time before highway travel, not just in obviously windy conditions, since air pressure changes from passing vehicles can create unexpected door stress

Long-term RV owners recommend testing secondary lock operation monthly and replacing units every 5-7 years regardless of apparent condition, as internal spring mechanisms can weaken over time without visible signs of wear

RV Industry Association safety guidelines, NHTSA recreational vehicle safety standards, and field testing data from RV safety equipment manufacturers specializing in secondary door locking systems

Installing secondary door locks on RV entry doors provides critical backup protection against catastrophic wind-induced door failures during highway travel. With modest investment ($40-$85) and straightforward installation, these systems transform single-point factory latches into redundant security that can prevent dangerous blow-outs, protecting occupants and other motorists from the severe consequences of door failure at highway speeds.