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RV Window Leaking Between Glass and Frame

As an avid RV enthusiast, there’s nothing more frustrating than finding a leak between the glass and frame of your RV windows.

Besides compromising the comfort and aesthetics of your beloved home-on-wheels, a leaking window can lead to more significant problems, such as water damage, mold growth, and costly repairs.

In this article, we will delve into the various causes of RV window leaks, explore effective solutions, and provide essential tips to prevent future occurrences.

Whether you’re a seasoned RV owner or a newbie, let’s equip you with the knowledge to handle this issue confidently.

RV Window Leaking Between Glass and Frame: Understanding the Problem

Before we delve into the causes and solutions, it’s essential to have a clear understanding of the problem at hand.

When your RV window is leaking between the glass and frame, it means that water is seeping into the space between the two components.

This can occur for various reasons, and if left unattended, it can lead to extensive damage to your RV’s interior and structural integrity.

Common Causes of RV Window Leaks

Understanding the root causes of RV window leaks is crucial in finding the appropriate solutions.

Let’s explore some common reasons behind this frustrating issue:

Worn Out or Damaged Window Seals: Over time, the rubber seals that keep your RV windows watertight can wear out, become brittle, or sustain damage from exposure to the elements.

Improper Installation: If the RV windows were not installed correctly, gaps and spaces may exist between the glass and frame, allowing water to seep through.

Cracked or Broken Glass: Physical damage to the glass itself can create openings for water infiltration.

Aging Window Frames: As your RV ages, the window frames may warp or degrade, leading to gaps that allow water ingress.

Sealant Deterioration: The sealant used around the window frame can deteriorate due to weather exposure, causing leaks.

Extreme Weather Conditions: Heavy rain, snow, and high winds can place significant stress on RV windows, making them susceptible to leaks.

Effective Fixes for RV Window Leaks

Now that we’ve identified the potential causes, let’s explore the most effective fixes for RV window leaks between the glass and frame:

Replacing Worn Out Seals

When you notice signs of wear or damage on the window seals, replacing them is a top priority.

Visit your local RV parts store or contact the manufacturer for replacement seals that match your RV’s window specifications.

Once you have the new seals, carefully remove the old ones and install the new ones securely.

Proper Window Installation

If you suspect that improper installation is the culprit behind the leak, it’s best to seek professional help.

An experienced RV technician can re-install the window correctly, ensuring a watertight seal.

Repairing or Replacing Cracked Glass

In cases of cracked or broken glass, you have two options: repair or replacement.

For minor cracks, specialized glass repair kits can often do the job.

However, for more extensive damage, replacing the glass entirely might be necessary.

Upgrading Window Frames

For older RVs with aging window frames, upgrading to newer, more durable frames can significantly improve the window’s water resistance.

Applying Fresh Sealant

If the existing sealant is showing signs of wear, applying fresh sealant around the window frame can prevent further leaks.

Make sure to use a high-quality, RV-specific sealant for the best results.

Installing Protective Awnings

Adding awnings or window guards can help shield your RV windows from extreme weather conditions, reducing the chances of leaks.

Preventive Measures to Avoid Future RV Window Leaks

Taking proactive steps to prevent RV window leaks can save you time, money, and unnecessary stress.

Here are some preventive measures to consider:

Regular Inspection

Perform routine inspections of your RV windows, looking for any signs of wear, damage, or sealant deterioration.

Catching potential issues early can prevent more extensive damage.

Keep Windows Clean

Clean your RV windows regularly and remove any debris or buildup around the frames.

This ensures that the window seals remain in good condition and function optimally.

Be Mindful of Weather Conditions

During heavy rain or storms, try to close the RV windows and use protective awnings if available.

Minimizing exposure to extreme weather can reduce the risk of leaks.

Proper Maintenance

Follow the manufacturer’s maintenance recommendations for your RV windows and ensure that they are well-lubricated and functioning correctly.

Avoid Harsh Cleaning Products

When cleaning your RV windows, use mild, RV-safe cleaning products.

Harsh chemicals can damage seals and compromise their effectiveness.

Park Strategically

When setting up camp, try to park your RV in a way that minimizes exposure to prevailing weather conditions.

Avoid parking under trees with low-hanging branches or in areas prone to flooding.


How can I tell if my RV window is leaking?

Look for signs of water stains, mold, or a musty smell near the window. Condensation between the glass layers is also a possible indicator.

Can I use household sealant for my RV window?

It’s best to use RV-specific sealants, as household sealants may not be designed to withstand the unique demands of an RV’s exterior.

Are RV window leaks covered by warranties?

It depends on the warranty and the specific circumstances. Some warranties may cover window leaks, while others may not.

Can I repair a small crack in the glass myself?

Yes, small cracks can often be repaired using DIY glass repair kits. However, if the crack is extensive or compromises the window’s integrity, professional replacement is recommended.

How often should I inspect my RV windows for leaks?

Regular inspections every three to six months are ideal to catch any potential leaks early.

Are there preventive measures I can take while my RV is in storage?

Absolutely. Before storing your RV, thoroughly inspect and seal any potential leak points, and cover your RV with a waterproof tarp or RV cover.


Dealing with an RV window leaking between the glass and frame is a challenge, but armed with the knowledge from this article, you can confidently identify the causes, implement effective fixes, and take preventive measures to safeguard your beloved RV from future leaks.

Regular maintenance, timely repairs, and a proactive approach to window care will ensure that your home-on-wheels remains a comfortable and dry haven for all your adventures.