water leaking on the floor from the bottom of closed slide when it rains.

[JoanCC]

2018 Four Wind 31W
About a year ago, water appeared on the floor from under the sink and dinette area coming from under the slide when the slide was in after a heavy rain. No work had been done on the slide or in that area of the RV. The water amount is a pint and can be soaked up easily. The leak only happens after a rain.

The awning over the slide is in great shape, covers the slide top and slopes down. The rail attaching the awning to the RV is tight to the RV and doesn't show any openings between the screws holding it. So it doesn't appear to be due to an opening at the top of the slide. When closed the slide seals are against the RV and covered by the awning.

We may have had some water on the floor when the slide was out but thought it was residual from the slide being in.
Before taking in to the RV shop, I was wondering if anyone has a suggestion on what the problem might be.

 

[RACarvalho1]

If water comes in when slide is closed, reseal the trim around the edges of the slide, on the exterior.
If that seal cracks (sometimes you can't see it) water gets there and into the floor then goes out (hopefully) inside the coach.
If not fixed quickly , it will rot the slide floor.

If water comes in when the slide is open, check the wiper seals.

Those are the "general rules" I could find.

 

[pneumatics]

Reseal your window(s). Typically the frameless types only have factory sealant across the top, the flange on the frame has foam strips as a gasket and these can dry out and crack. This allows water to enter typically around the lower side to the bottom curve cut. Adding silicone around the full top and both sides should fix the ingress point if there.

 

[Jimbo56]

My living room slide has a d (bulb) seal on the top that when open and windy, slides back. This leaves the front corner exposed if closed and unnoticed. When closed, water seeps in the front, runs down the inner slide wall, and drips on the floor behind drivers seat. I slid the seal back in place, and in 4 recent heavy rains, no more water. I tacked the seal in place with black Geocell.

 

[Chateau_Nomad]

My living room slide has a d (bulb) seal on the top that when open and windy, slides back. This leaves the front corner exposed if closed and unnoticed. When closed, water seeps in the front, runs down the inner slide wall, and drips on the floor behind drivers seat. I slid the seal back in place, and in 4 recent heavy rains, no more water. I tacked the seal in place with black Geocell.

The bulb seals around my slide also have a habit of sliding in their channel. Great point about tacking them in place with Geocel.

 

[rtaggio]

I had a leak and it was from gaps around the furnace cover, don't know specifics of your model, just tossing in my experience.

 

[10scDust]

We had that problem only one time, that was when we experienced the hyd level system not working, and we were really unlevel towards opposite side of slide-out.

 

[Scubawise]

Bases on 4 year advice here, I climb on the roof twice and year and look for any openings, holes on roof or slide area.
Anything gets dicor..
Happy camping

 

[hikerjohn7]

It Could Be The Sealant In the Joints Of The Slide Outer Trim

2018 Four Wind 31W
About a year ago, water appeared on the floor from under the sink and dinette area coming from under the slide when the slide was in after a heavy rain. No work had been done on the slide or in that area of the RV. The water amount is a pint and can be soaked up easily. The leak only happens after a rain.

The awning over the slide is in great shape, covers the slide top and slopes down. The rail attaching the awning to the RV is tight to the RV and doesn't show any openings between the screws holding it. So it doesn't appear to be due to an opening at the top of the slide. When closed the slide seals are against the RV and covered by the awning.

We may have had some water on the floor when the slide was out but thought it was residual from the slide being in.
Before taking in to the RV shop, I was wondering if anyone has a suggestion on what the problem might be.

I saw this same symptom when I put out the slides on my Jayco class A with wetness on the floor. It turned out the sealant in the joints of the slide's outer trim to the outer wall had deteriorated. Over several years it rotted one slide's floor and discolored the other slide floors.

See photos...

 

[Jimbo56]

I saw this same symptom when I put out the slides on my Jayco class A with wetness on the floor. It turned out the sealant in the joints of the slide's outer trim to the outer wall had deteriorated. Over several years it rotted one slide's floor and discolored the other slide floors.

See photos...

I just spent 4 hours today removing old sealant , cleaning, and resealing that seam. When parked in my driveway the drivers side is exposed to full sun. Hard on sealant. But I still think your problem is the bulb seal on the top inside of the slide.

 

[Scubawise]

I just spent 4 hours today removing old sealant , cleaning, and resealing that seam. When parked in my driveway the drivers side is exposed to full sun. Hard on sealant. But I still think your problem is the bulb seal on the top inside of the slide.

Zero water issues in 4 years.
This may help

Sashco 13010 10.5oz Sashco Sealants Clear Lexel Adhesive Caulk, 10.5-Ounce
https://a.co/d/dPE1Ym0

 

[Jimbo56]

Zero water issues in 4 years.
This may help

Sashco 13010 10.5oz Sashco Sealants Clear Lexel Adhesive Caulk, 10.5-Ounce
https://a.co/d/dPE1Ym0

This appears to be similar to the product I’ve been using. Proflex RV by Geocell.

 

[Scubawise]

This appears to be similar to the product I’ve been using. Proflex RV by Geocell.

Yes . Proflex RV is excellent

 

[JoanCC]

Found the problem. There is a trim piece 6" wide that runs along the bottom of the slide. The seal for the slide is at the inside bottom of this trim piece. The trim is held to the slide wall with sealant, no mechanical connection to the slide wall. Over four years the sealant allowed the trim piece to slid down about a 1/4" leaving gaps in the sealant. With the slide retracted, the bottom seal on the trim sealed with the opposite seal on the RV as normal. When it rained, the rain came down the side of the the retracted slide, leaked though the gaps in the trim sealant, landed on the top of the seal inside the trim and overflowed onto the floor in the RV. The RV guys removed and reattached the trim piece by screwing it to the slide wall, and resealed it. No permanent damage to the RV floor; they fanned dried it overnight.

 

[Scubawise]

Great find..thx for the update
Will check all my trim

 

[Jimbo56]

Great find..thx for the update
Will check all my trim

Can you post a couple of pictures so I know exactly what to look for?

 

[JoanCC]

This is what it looks like. You can see that the trim piece extend below the bottom of the slide. The slide bottom seal is on trim below the bottom of the slide so as to make contact with the reciprocal seal on the RV body.

 

[Scubawise]

This is what it looks like. You can see that the trim piece extend below the bottom of the slide. The slide bottom seal is on trim below the bottom of the slide so as to make contact with the reciprocal seal on the RV body.


View attachment 45168

View attachment 45169

Thx for sharing. Checked and caulked trim and trim caps!