slide out leaking at bottom corner

Slide Out Leaking At Bottom Corner: Identify and Re-Seal


RVs provide you with an escape from the mundane reality. However, it might not be as easy to escape. Especially if you find your RV slide-out leaking.

You might ask, what causes slide-out leaking at bottom corner?

The answer is simple. The seal protecting the RV slide-out may have cracked. This could be due to- extreme heat, high-speed air, dirt, rain, etc. All of these are enough to cause the slide-out to leak. Apart from that, the screws that hold the slides together might get rusted as well causing the rainwater to leak.

These are the reasons for RV slide-out leaking, in a nutshell. However, if you’re interested to know the reasons and their solutions in detail, read along.

Let’s go-

Slide Out Leaking At Bottom Corner: What To Do

Although RV slide-outs give you all that space, it can give rise to some drawbacks. One of them is the slide-out leaking.

If you find your RV carpet soaked or dripping water from any corner, there’s a possible chance of leakage. The more you’ll neglect it, the worse the leakage will become. So, you might end up spending thousands of dollars on fixing this. 

If you ever find an RV leaking, the first step for you would be to identify the place of possible leakage. For that, you’ll need to follow some simple steps-

Identifying The Leakage

If you want your camping to go smoothly, you’ll need to identify where the water is coming from. However, the water leaking from the slide might not necessarily be from the same place as the leakage. 

The leakage can literally be anywhere. It’s not always the broken water pipe. So you need to be more observant while searching for leakage.

You can start by checking under the slide. The bottom of the slide will have spongy areas if there’s any leak. These areas help to find out the flow of water.

After checking the slide, you need to look for the seals. The seals get broken and cracked due to extreme weather endurance. Broken seals are the most common cause of slide-out leaking. For this, you’ll also have to inspect the screws holding the seals together. The screws get rusty and as a result, they start loosening up. This allows water inside.

If you’ve found the leakage, you can move on to the next step. Which is finding out the reason for the leakage-

Reasons For Leakage

 A lot of the factors of an RV causes a leakage. The sooner you find the reason, the better. Because this will help you to proceed to the next step, which is fixing the leakage.

Damaged Seals 

The seal can lose its effectiveness if it’s too old. They might even break causing the water to flow inside. 

Even if your RV is brand new, leakage is not surprising. Because in many cases, the seals are not installed properly. So, the gaps between the seals might cause the water to flow inside.

Uneven leveling of the RV

Apart from the broken seals, the leveling of the RV also affects the seal. If the RV is not leveled properly, the amount of water flow allows the water to seep in through the gaps. An RV without proper leveling can cause other major problems such as appliance malfunctioning. 

Extreme Climate Conditions

Another important reason for leakage in the RV seal is extreme weather. Such as, heavy rain allows water to flow through the gaps of the seals. Extreme heat, wind, snow, etc can also damage the seals to a great extent.

Now if you’ve found out the reason for slide-out leaking, you can get into the action-

Fixing the Leakage

Yes! You can fix the leak all on your own. There are a number of solutions you can go for. The primary solution would be to replace old seals. Seals are very easy to install. 

You need to unscrew the strip that’s leaking and clean inside. After that, you can attach the seal. All you need to keep in mind is to be careful with the length of the seals.

If the screws are responsible for the leakage, simply buy new ones and replace them. Besides, adding a layer of weather coat and cleaning any form of debris from under the slide-out can protect the seal for the long-term. 

Using an RV seal conditioner every two months is also a must. Besides, you might need to apply a new coat of non-leveling lap sealant in order to make the seals watertight. This will also make it weatherproof to some extent.

There are a lot of RV seals and strip screws available in the market. We have curated a list that we think will satisfy your needs-

RV Seals Strip Screws






In the case of the whole leveling situation, using leveling jacks or leveling blocks help this. So, we have presented a list of leveling jack and leveling block that we think will be the best for you-

Leveling Jack Leveling Block






Once you’ve completely sealed the leak, you can just let out a sigh of relief! Because you’re finally done.


Question: Do all slide outs leak?

Answer: Leaking in slides is common. But it does not depend on the type of slides, rather it depends on the seals used to prevent water from flowing inside. Replacing the seals every 2 years is also important to keep the slide from leaking.

Question: How do you treat slide out seals?

Answer: The slide-out seal goes through a lot. The wind, sunlight, heavy rain, and even snow can cause the seal to crack. It’s ideal to use a coat of RV seal conditioner and check for leakage twice a month. However, replacing the seals every 2 years is a must.

Question: How do you stop a slide from leaking?

Answer: There are multiple ways to stop a slide from leaking. However, the best way to stop leaking is to replace the old seal. Other than that you can follow the guidelines for any of the steps explained above.

Signing Off

We hope you were able to find out the reason for the slide-out leaking at bottom corner by following our simple guide. 

Identifying the reason for leakage leads you to the process of fixing the broken seal. Thus, you can go back to planning your sweet summer trip!

Let us know about the leakage in your RV in the comment section.

Till then, keep on rolling!

As an Amazon Associate I earn from qualifying purchases.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top