Suspected mud dauber problem?

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Joined
Nov 3, 2019
Messages
397
Location
TGO Titusville FL
RV Year
2015
RV Make
Newmar
RV Model
Dutchstar 4369
RV Length
43
TOW/TOAD
2014 Honda CRV
While at the Strawberry Festival Rally last week, I noticed the shower was draining slower than usual, so I poured two large pots of boiling water down the drain.
But later while dumping the tanks, the gray tank was draining very slow, and was trying to take air from the drain side, just like when you are pouring water from a bottle. Looks like my went tube is plugged?
I have seen wasp and daubers flying in the garage, but was not able to find their nest.
Now I'm trying to work up a courage and climb on the roof. At 71 year old and on the heavy side, it is getting harder all the time :).
I wander if someone else had to deal with that?
 
Joined
Dec 25, 2019
Messages
349
When I had my trailer, I put some screen material around the vent pie to prevent this. I have been meaning to do it on the MH, but never got to it. I also put it in the A/C cover and refrigerator vent on the side of the MH.

If you are uncomfortable getting up there, I would get a local mobile tech recommended by the campground owner , perhaps to get up there and take care of it. Chances are he has done it before and knows what he is doing. It may cost you 50 or 60 bucks, but it would be well spent. Have him check all of the roof and seals while he is up there.
 

Jim

Joined
Dec 18, 2019
Messages
772
Location
North Carolina
RV Year
2009
RV Make
Tiffin
RV Model
Phaeton QTH
RV Length
40
TOW/TOAD
2016 Jeep Rubicon Hard Rock
While at the Strawberry Festival Rally last week, I noticed the shower was draining slower than usual, so I poured two large pots of boiling water down the drain.
But later while dumping the tanks, the gray tank was draining very slow, and was trying to take air from the drain side, just like when you are pouring water from a bottle. Looks like my went tube is plugged?
I have seen wasp and daubers flying in the garage, but was not able to find their nest.
Now I'm trying to work up a courage and climb on the roof. At 71 year old and on the heavy side, it is getting harder all the time :).
I wander if someone else had to deal with that?
Even if you climb up on the roof, there's no guarantee you'll see anything to prove they are/were in there or not. Well, not unless they're flying in/out of the top of the tube. And if that's the case, I don't think you're going to want to be up there. That vent tube has a cap on it, so you'll not be able to look down inside anyway.

I used the vent tube as a way to channel my solar wires from the roof down to the basement of the motor home. And while I was trying to fish the wire up through the vent tube, it kept banging into something that stopped it from going any further. After a bunch more banging and jamming the wire, it finally busted through and a whole lot of mud dauber nesting (i.e. chunks of dirt) came down the tube.

So yes, the little buggers like an area like that and apparently neither Tiffin nor Newmar did anything to block them from gaining access. Jamming a 4 gauge wire broke through the nest(s) in mine but unless you have some laying around, it's a little expensive to purchase just to evict some daubers. I wonder if maybe pouring some water down that pipe might dislodge/destroy the nest?
 
Joined
Nov 3, 2019
Messages
397
Location
TGO Titusville FL
RV Year
2015
RV Make
Newmar
RV Model
Dutchstar 4369
RV Length
43
TOW/TOAD
2014 Honda CRV
Thank you Jim. I have electrician’s fish tape, that’s a very stiff steel rectangular wire that could work?
will let you know.
 
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Joined
Nov 3, 2019
Messages
397
Location
TGO Titusville FL
RV Year
2015
RV Make
Newmar
RV Model
Dutchstar 4369
RV Length
43
TOW/TOAD
2014 Honda CRV
Update:
Managed to peek on top. There are two vents. One by the mid AC and one in the same location next to the aft AC. The one by the mid AC had the top knocked off. Tried to push down the fish tape, but will go only about 6". Tried to look in, but it is a black pipe and looks like there is a 90 degree elbow? I have no idea which one is which?
Looks like I will be replacing both vents? Wander if there are any better ones out there? These lasted 5 years and the plastic is disintegrating.

fullsizeoutput_a1d.jpeg
 
Joined
Nov 4, 2019
Messages
549
Location
No Where In Particular
RV Year
2020
RV Make
Newmar
RV Model
Dutch Star 4369
RV Length
43’ 9”
TOW/TOAD
2016 Colorado
Buly
Not suggesting you buy from CW but may want to use these instead of replacing the complete vent.

 
Joined
Nov 3, 2019
Messages
397
Location
TGO Titusville FL
RV Year
2015
RV Make
Newmar
RV Model
Dutchstar 4369
RV Length
43
TOW/TOAD
2014 Honda CRV
Thank you Bill. That may work, plus I will install some SS screen.
 
Joined
Nov 4, 2019
Messages
549
Location
No Where In Particular
RV Year
2020
RV Make
Newmar
RV Model
Dutch Star 4369
RV Length
43’ 9”
TOW/TOAD
2016 Colorado
I like the SS screen idea
 
Joined
Nov 15, 2019
Messages
181
Location
Portage, MI
RV Year
2017
RV Make
Newmar
RV Model
Ventana LE 4037
RV Length
40' 11"
TOW/TOAD
2021 Chevy Trailblazer
Joined
Nov 3, 2019
Messages
397
Location
TGO Titusville FL
RV Year
2015
RV Make
Newmar
RV Model
Dutchstar 4369
RV Length
43
TOW/TOAD
2014 Honda CRV
If I go to total replacement, I will go that route.
 
Joined
Dec 25, 2019
Messages
349
Update:
Managed to peek on top. There are two vents. One by the mid AC and one in the same location next to the aft AC. The one by the mid AC had the top knocked off. Tried to push down the fish tape, but will go only about 6". Tried to look in, but it is a black pipe and looks like there is a 90 degree elbow? I have no idea which one is which?
Looks like I will be replacing both vents? Wander if there are any better ones out there? These lasted 5 years and the plastic is disintegrating.

View attachment 1395
I know you are not on the roof much. I treat all plastic and rubber items with Aerospace 303. UV protection. I usually treat several times during the camping season.
 
Joined
Nov 3, 2019
Messages
397
Location
TGO Titusville FL
RV Year
2015
RV Make
Newmar
RV Model
Dutchstar 4369
RV Length
43
TOW/TOAD
2014 Honda CRV
As RandyB suggested, I replaced both vents with 360 Syphon model. The old ones were crumbling like soda crackers in my hand. The hard part was I had to work on my knees in the 4' space between RV roof and garage ceiling. While there, I noticed the Dicor sealant on the roof was developing deep cracks. So I ordered 5 tubes of the stuff and that's my new project. The very hard part is scrapping the old Dicor. In the mean time the temps here are pushing 90F.
BTW before installing the vent caps, I used the garden hose to reverse flush the vent pipes from the top. They were fine.
 
Joined
Nov 2, 2019
Messages
2,124
Location
WA, MT or somewhere else!
RV Year
2018
RV Make
Newmar
RV Model
Mountain Aire 4047
RV Length
40'
TOW/TOAD
2014 Honda CR-V
The 360 Siphon vent looks interesting, but I'm wondering about the concave top plate. Won't it retain water?

I understand that when in motion, that wouldn't be an issue, but when parked it looks like it would retain water. Are there some drains that I'm not seeing in the photos?

TJ
 
Joined
Nov 3, 2019
Messages
397
Location
TGO Titusville FL
RV Year
2015
RV Make
Newmar
RV Model
Dutchstar 4369
RV Length
43
TOW/TOAD
2014 Honda CRV
TJ, That bothered me too, but what we can do? That's how they made it. There is no drain hole, and I have no idea why they dished it like that?
 
Joined
Nov 3, 2019
Messages
432
RV Year
2019
RV Make
Newmar
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Dutchstar 4369
RV Length
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TOW/TOAD
2013 Chevy Silverado 2500HD Crewcab / 2020 Jeep Wrangler Unlimited Rubicon
I have an older version of the 360 siphon, and it is not concave. I would fill that area in with dicor.

2019 DSDP 4369 * Active Air * NHSO
 
Joined
Nov 2, 2019
Messages
2,124
Location
WA, MT or somewhere else!
RV Year
2018
RV Make
Newmar
RV Model
Mountain Aire 4047
RV Length
40'
TOW/TOAD
2014 Honda CR-V
I have an older version of the 360 siphon, and it is not concave. I would fill that area in with dicor.

2019 DSDP 4369 * Active Air * NHSO
Great idea, @redbaron! And, maybe crown it just a little in the center. If I ever need to replace a vent cover, that's exactly what I'm going to do.

TJ
 
Joined
Dec 25, 2019
Messages
349
From some of the reviews and looking at the new one, it appears that they really cheapened the product. The new on looks very flimsy compared to the original. How sturdy does it feel in your hand? I looked at it and decided to stay with the standard cap.
 
Joined
Nov 3, 2019
Messages
397
Location
TGO Titusville FL
RV Year
2015
RV Make
Newmar
RV Model
Dutchstar 4369
RV Length
43
TOW/TOAD
2014 Honda CRV
AbdRahim,
I found it to be ok. Of course, if someone kicks it, it may brake. On the original ones, the cap was held on by a single screw in a thin post. If you want sturdy, get the metal ones that are made for a gas heater I think?
 
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