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Tip Inspect your silicone caulks

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Neal

Staff member
RVF Administrator
Joined
Jul 27, 2019
Messages
13,082
Location
Midlothian, VA
RV Year
2017
RV Make
Newmar
RV Model
Ventana 4037
RV Length
40' 10"
Chassis
Freightliner XCR
Engine
Cummins 400 HP
TOW/TOAD
2017 Chevy Colorado
Fulltimer
No
I discovered something yesterday in my pre-departure walk-around with a "belt rail" as Newmar calls it separating on the left aft of my coach. I believe this is caused by water intrusion as I look up and in the vicinity of my gutters there is separation of the silicone caulk and a perfect location for water to enter from the AC's as well as rain. I've had other places in the front area I've fixed not long ago with water coming in over the driver's side window. Simple fix and simple to check but something I could have been more diligent in finding and fixing. I'll likely stop by Newmar next year and have them reconnect this rail if I can't figure out how it's secured. But definitely need to do an inspection and some clear silicone caulking.

sidewall-1.png
 
I have a gap there too…
 
yup mine too - pass side rear. I’m on it - thanks!
 
I have the same gap since new. In my case, I believe, the piece was cut too long and popped out. Newmar is going to fix it when I visit them in March for some paint.
 
I discovered something yesterday in my pre-departure walk-around with a "belt rail" as Newmar calls it separating on the left aft of my coach. I believe this is caused by water intrusion as I look up and in the vicinity of my gutters there is separation of the silicone caulk and a perfect location for water to enter from the AC's as well as rain. I've had other places in the front area I've fixed not long ago with water coming in over the driver's side window. Simple fix and simple to check but something I could have been more diligent in finding and fixing. I'll likely stop by Newmar next year and have them reconnect this rail if I can't figure out how it's secured. But definitely need to do an inspection and some clear silicone caulking.

Man, how do you get it to shine like that?
 
Also how did you end up with stainless baggage door trim? I didn't think that was an option on the Ventana.
 
Also how did you end up with stainless baggage door trim? I didn't think that was an option on the Ventana.
I didn't think it was available either but it is. As mentioned above you can order it and install it yourself, I had Newmar do it early on. Not only does it look good but it really strengthens the bottom of the basement doors as that's such thin aluminum. I had road trash peel away the bottoms of two basement doors on my first camping trip in my coach. The cost for repair was the same as the cost for summit which I really wanted and that covered the damage areas so it worked out. Love the look. If you have chrome basement door handles I think it's a no brainer to get summit stainless trim. I also replaced the entry door handle with stainless.
 
I discovered something yesterday in my pre-departure walk-around with a "belt rail" as Newmar calls it separating on the left aft of my coach. I believe this is caused by water intrusion as I look up and in the vicinity of my gutters there is separation of the silicone caulk and a perfect location for water to enter from the AC's as well as rain. I've had other places in the front area I've fixed not long ago with water coming in over the driver's side window. Simple fix and simple to check but something I could have been more diligent in finding and fixing. I'll likely stop by Newmar next year and have them reconnect this rail if I can't figure out how it's secured. But definitely need to do an inspection and some clear silicone caulking.

View attachment 15256
Any particular kind of clear silicone caulk?
 
No, just clear silicone caulk. Inspect from top down so water can't get down from AC's, rain, etc. and then all areas on the sides of the coach. May have to remove old before installing new.
 
I have noticed water coming out of the bottom of that vertical channel when the drains get plugged. I'll be up in the roof again checking just where to seal it.
 
I don't know what these "belt rail" things are for. Do they serve a purpose?
 
Like a boat’s rub rail that seals and hides the cap where it joins the hull?

Not 100% sure but I believe the belt rail serves to hide/seal the horizontal seam between the upper coach sides and the lower compartment frames. They also would prevent water intrusion into the lower compartments.
 
Following up on this thread I got up on the roof today to take a few pictures of the EAA AirVenture grounds I'm camping at for the next few days. Knowing I have the issue as outlined in the OP I figured I'd take a close look to see if there is a leak up top as I suspect water intrusion. Yep, found it. The silicone bead is intact and looks fine along the molding strip that is starting at the top and going down the side of the coach. However, if you pull on the silicone slightly you would see that it is detached and not sealing against the molding. As with other places it's time to remove old silicone beads and redo them.
 
This is something that Newmar Service found on the CanyonStar and resealed at one of the annual visits. Silicon sealant is tricky stuff.
 
Was on the roof a couple of weeks ago servicing the coils on the heat pumps. Very surprised how bad the dicor has cracked. needs repair.... another job
 
@Rich W. that is how the Ventana became the Ventessex. Just a little ole Neal thinking outside the box.
Also how did you end up with stainless baggage door trim? I didn't think that was an option on the Ventana.
 

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