Skip to Content

Slide Out Leaking at Bottom Corner

Slide Out Leaking at Bottom Corner

Slide-outs are present in RVs to extend their space; they can also contain the whole room, including beds, dinette, sofas, and chairs. 

RV Slide Out Leaking at Bottom Corner is often due to low-quality seals that become out of function after some years. The water drips inside if they are not closed adequately due to dust on the sides. The improper leveling will also cause this fault. In addition, the changes in weather conditions like extremely hot and cold will produce cracks and damage the seal, which can cause the entry of moisture to the interior. The rusting of screws and clogged gutter on the roof of RVs can cause this problem.

The floors of the motorhomes become fragile due to the presence of water and are easily breakable when you mistakenly apply little stress on them.

In addition, it will also damage the wooden furniture and cabinets, which also starts to rot due to high moisture level.

Issues with rubber seal

The rubber sealing is present around all four corners of the slide outs to close correctly and prevent the entry of water and dust particles into the interior side.

If these seals are not closed, water enters the inner side, damages the carpets in your RVs, and allows the mildews to grow there.

In addition increase in humidity also cause unpleasant situation for people who are staying there. The seals are primarily rubber material to provide a proper grip.

The rubber seals have their specific lifetime, after which they start to become loose and lose their strength and place.

The loosening of the rubber seals will cause water leakage due to improper closing, and water can damage the floors and make white spots there.

 The larger ones are more vulnerable to damage because they will wear out from different regions.

Furthermore, the seals will also come out from their place when they are not correctly installed.

You should resolve this issue by filling the missing seal with putty. In addition, you can also use silicone-based sealants to fill the missing area or from where it becomes loose.

You should also fix this fault by the correct installation or fixing seals so it can stay there for a longer time without causing any damage.

Inappropriate closing and opening

Sometimes, the inappropriate closing and opening of slide-outs for several reasons will cause water to drip into the inner side.

The inadequate closing and opening will occur when there is some issue with a power supply that cannot provide enough power for their closure.

In addition, the issues with the slide-out motor will also cause difficulty when you close them, they will not close fully, and some gaps are left there.

Sometimes some foreign particles or dust due to traveling in high wind areas will also start to accumulate on the sides of the seals, due to which it cannot fix appropriately at their place.

The adhesive materials often accumulate on the seals, which can cause the issue in closing.

The issues with a closure also come when wires are not attached, which cannot provide enough current from the power source.

Before going on the long trip, you should check whether it is closing correctly or not. If you feel any issue, check the motors and wires that they are correct.

You should also remove dust from its sides by using a blow dryer or vacuum cleaner so it can collect all the debris and other foreign particles from there.

Remove the dust particles by using a soft bristle brush and cleaning it correctly. Next, you can remove the adhesive material by scraper and gently scraping the surface.

Improper leveling

Sometimes people park their motorhomes on bumpy roads or in hilly areas during their stay. They complain that their slide-outs start to leak and water is coming on the inner side when parking like this.

The issues come from improper leveling and the accumulated water on the top surface or roof to one area causing water to drip into the bottom corner.

Many of my friends also said they park their RVs at the side during rain, but the road’s surface is not correct, so water comes inside, and it was winter days.

They face issues due to water accumulation and more humidity during cold days. They also said that the humidity level is much high than average that their electrical propane heaters are not working well to provide good insulation.

Due to poor leveling, the water seeps from one side or multiple sides depending upon the parking area.

You should fix this fault by parking them at the right place where smooth roads are. If the surface is not smooth, you can also use small jacks or rubber pads to balance the surface and prevent leakage from the bottom side.

Cracks on window seal

Sometimes, RVs’ slide-outs are larger than the windows for proper ventilation on the interior side.

It also contains the living room with dinette chairs and sofas for enjoyment with family members. However, if the cracks on the windows’ seals come in your slide-outs, it will cause a challenge for people.

The sofas and dinette chairs are present near windows, and water can damage their color and upholstery.

The mildews also start to grow on the upholstery of the sofas due to the presence of high moisture. The carpets are also present in this area, which becomes damp, produces a smell, and makes people’s survival difficult.

The cracks on the windows seals will come due to frequent opening and closing. You should fix this issue by replacing the rubber seals of the windows after every 7 to 8 years to minimize the damage.

You should also increase their life by removing dust from them and cleaning the greasing residues, making them faulty and out of function.

Changes in temperature and weather

Changes in temperature and weather conditions are normal phenomena that cannot be changed but can affect the RV, resulting in water dripping in the bottom corner.

In the harsh weather on hot summer days, the melting of rubber seals occurs, and they become loose. This can make your RV slide-out leak at various points.

When awnings are not present, direct heat comes in contact with the seal and loses its strength and functionality.

Sometimes people park their RVs and motorhomes in an open area or open garage during the winter season, which can cause cracking of seals due to cold temperature.

When they drive without checking the seals, the water will come inside and damage its other parts.

Sometimes, high humidity will also charge the exterior if they are aluminum or metal material and produce electric shocks.

Moreover, the issue will also come on winter days when you park them without covering and no winterization.

You should reduce water entry by properly parking them in a garage that is not in the open area where rainwater directly comes on the trailer’s surface.

Rusting of Slide-out screws

The screws are present on its sides to attach them firmly to the trailer body. However, the rusted screws can easily break and fall off during traveling on bumpy roads. You should know how much weight RV slide-out can hold for better results.

The screws will get rusty due to the high moisture level on the exterior side. Moreover, the corrosion will also come due to dust on their sides.

The rusting screws will not last longer and become fragile; the slide-outs will open from one side when they become out of function.

The opening from one side will cause dripping of water into the interior. You should resolve this issue by replacing the screws and changing them with high-quality stainless steel ones with more longevity.

Moreover, you should also apply grease on their surface to prevent the presence of rust.

Blocked gutters on the RV roof

The gutters are present on the roof of the RVs for the removal of water and proper drainage of rainwater during the rainy season.

When you do not maintain the proper cleanliness, the dust will accumulate in these gutters and completely block them.

The blockage of these holes will cause water accumulation on the roof for longer. In addition, water on its upper surface will cause moisture entry whenever you open or close the slide-outs.

You should fix this fault by removing water from the top surface. You should also use detergents to open them by removing the accumulated particles.

Related Articles:

Riverside RV problems

Common problems with Braxton Creek RV

Common Problems with Casita Travel Trailer

Is it Easy to Read RV Tank Monitors?