Water in the wet bay

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Water in the wet bay

November 30, 2021, 05:21:59 pm

Water in the wet bay when it's raining. I have been trying to source where the rain water
is coming from. It is on the passengers side in the wet bay. It only happens when it is
raining

Re: Water in the wet bay

Reply #1 – November 30, 2021, 05:30:59 pm

Is it coming in from below via the opening hatch that swings down for sewer and power etc. I rebuilt the one on our last coach and made it a wider sealing area and a good fit. If not this then must be be bottom section of the large door seal. Check condition of the complete seal and esp corner joints.
JohnH in Mexico right now.

Re: Water in the wet bay

Reply #2 – November 30, 2021, 05:34:01 pm

Quote from: oldguy – November 30, 2021, 05:21:59 pm

Water in the wet bay when it's raining. I have been trying to source where the rain water
is coming from. It is on the passengers side in the wet bay. It only happens when it is
raining

Raining and sitting OR raining and driving??

Re: Water in the wet bay

Reply #3 – November 30, 2021, 06:07:23 pm

On mine, same thing was happening. I tracked it down to the fridge vent opening (on side of coach, not top of coach).

Check the floor area of the side fridge vent and see what can be done. Ours had been converted to a residential fridge, so I had a relatively small area to seal.

1st photo, door added by PO when residential fridge installed. 2nd photo, area I sealed up to stop water flow (bottom of vent)

Re: Water in the wet bay

Reply #4 – November 30, 2021, 06:30:45 pm

Just sitting raining. Where ever it is coming it's a good size leak. I thought it was
coming where the piano hinge is popped riveted to the door which I'm going to
take apart and siliconed it and I've just got some stainless 1/2 X 10/32 to screws to
screw it back together. It is supposed to be sunny Thursday.

Re: Water in the wet bay

Reply #5 – November 30, 2021, 07:23:42 pm

Quote from: John Haygarth – November 30, 2021, 05:30:59 pm

Is it coming in from below via the opening hatch that swings down for sewer and power etc. I rebuilt the one on our last coach and made it a wider sealing area and a good fit. If not this then must be be bottom section of the large door seal. Check condition of the complete seal and esp corner joints.
JohnH in Mexico right now.

Aren't the OPs sewer, power and water lines on the driver's side?

If your coach is tipped slightly to the passenger's side than any water in the by will migrate to that side. If it is humid out (likely, it is raining) and you add cold water to your tank, moisture will condense on the outside of the tank. It doesn't seem like it would be much but if it runs off onto the bay floor and then collects at the pass side it is enough to be noticeable.

It could be coming from anywhere, roof line, windows above the bay, the waistline trim, the bay door gaskets. Eliminate possible sources one at a time. Maybe use some water with a few drops of food color to help track leaks.

Re: Water in the wet bay

Reply #6 – November 30, 2021, 07:31:55 pm

I have heard the term water closet and wet bay used exclusively in topics. Which are which. I would consider the water closet the manibloc side and the wet bay the sewage/ water hose side. Am I correct?

Re: Water in the wet bay

Reply #7 – November 30, 2021, 08:00:27 pm

Peter, I think the entire bay where the water and waste tanks are located, fill hose, electrical land line and sewer connection on one end and the Manabloc manifold and water pump on the other is the wet bay. A water closet is usually a small room where the toilet is located.

Re: Water in the wet bay

Reply #8 – November 30, 2021, 08:07:16 pm

Ok I just wonder when problems have been stated in the wet bay what side they are talking about
Thanks!

Re: Water in the wet bay

Reply #9 – November 30, 2021, 10:35:53 pm

Quote from: dicksop – November 30, 2021, 07:31:55 pm

I have heard the term water closet and wet bay used exclusively in topics. Which are which. I would consider the water closet the manibloc side and the wet bay the sewage/ water hose side. Am I correct?

wa·ter clos·et

a flush toilet./ a room containing a flush toilet.

Re: Water in the wet bay

Reply #10 – November 30, 2021, 10:45:24 pm

Leak is more than noticeable. Tonight when I went out to check on it I found water
on the drivers side so tomorrow I will spend all day to see if I can find the leak.
I will lean the coach from side to side to see what I can find. Roger I have been thinking
of dye so I may try that. It can get a cup of water in a few hours.

Re: Water in the wet bay

Reply #11 – December 01, 2021, 07:17:39 am

Quote from: oldguy – November 30, 2021, 10:45:24 pm

Leak is more than noticeable. Tonight when I went out to check on it I found water
on the drivers side so tomorrow I will spend all day to see if I can find the leak.
I will lean the coach from side to side to see what I can find. Roger I have been thinking
of dye so I may try that. It can get a cup of water in a few hours.

Do you still have RV fridge, or residential?

The drain from the fridge can absolutely overflow water down into the wet bay depending on location of fridge. Fridge "should" boil off condensation water/melted ice, (or) run it out a drain tube, but may not be.

And on my coach it took me a long time to determine rain water entering side fridge vent was flowing down inside fiberglass and ending up in wet bay after most rains. I spent weeks determing that then verifying it.

Re: Water in the wet bay

Reply #12 – December 01, 2021, 08:27:35 am

If you think it is coming from the hinge area, use some blue painter's tape to temporarily seal that area. Same with any other outside component.

Re: Water in the wet bay

Reply #13 – December 01, 2021, 09:17:37 am

However you figure it outdo it sooner. This has likely been going on for a while and all that water goes into the floor structure

Lay an unwrapped sacrificial roll of paper towel on its side where the water collects. It will suck up lots of water. You can pitch it but if you are patient (and frugal) the roll will dry out and can be used again. A slow process.

Re: Water in the wet bay

Reply #14 – December 01, 2021, 09:55:58 am

Quote from: wolfe10 – December 01, 2021, 08:27:35 am

If you think it is coming from the hinge area, use some blue painter's tape to temporarily seal that area. Same with any other outside component.

That was part of the process I used to narrow down where rain was entering my wet bay. It quickly eliminated the door seal and hinges.

Re: Water in the wet bay

Reply #15 – December 01, 2021, 03:59:35 pm

I pulled the door off this morning and it's not that. The rain water drains out behind the door seal. I lowered the back end of the coach and water was draining out the bulkheads. I sure don't like that. The main storage bay is wet so my wife will pick up some vegetable dye and I will try that.

The fridge vent was letting a little water but there is a big leak somewhere. Going back out to keep looking.

Re: Water in the wet bay

Reply #16 – December 01, 2021, 04:03:43 pm

I would proactively pull down the FG bottom under the wet bay and allow it to dry out.

Treat any rusting box beams. If you can dry out the foam insulation, great, if not replace with new.

Re: Water in the wet bay

Reply #17 – December 01, 2021, 04:42:30 pm

Quote from: oldguy – December 01, 2021, 03:59:35 pm

. The fridge vent was letting a little water but there is a big leak somewhere.

Check where the sewer vent line goes through the roof. Make sure that it is sealed off to the roof fiberglass. I had one case where someone replaced the vent cover and removed the sealant from around the pipe causing a huge leak found in the basement. On that coach the vent line was a straight shot from the roof to the tanks which made a great path for the water.

Mike

Re: Water in the wet bay

Reply #18 – December 01, 2021, 10:43:43 pm

I just change one of my vents and it takes a bend just below the roof so the
cupboard would be full of water. I will check the other one more closely tomorrow.
It's raining tonight so I will check everything tomorrow morning.

Re: Water in the wet bay

Reply #19 – December 04, 2021, 07:26:57 pm

Still looking for where the water is getting in. It rained last night and found water
on top of the gray water tank. It's concaved at the top so I vacuumed out about 2
quarts of water. Now I have to find out how it got there.

Re: Water in the wet bay

Reply #20 – December 04, 2021, 10:14:10 pm

Peter, sure sounds like a dilemma! I would check the refrigeration vent.. Since I now no longer have a propane fridge, I have been thinking about sealing off the roof vent and the side vent which are no longer needed. Here in Mazatlan during the day I can definitely feel warm humid air in my face as I walk past my refrigerator. It's coming from that roof vent.

Re: Water in the wet bay

Reply #21 – December 05, 2021, 12:14:30 am

I fiberglassed the roof vent and I have taped off the fridge vent except the top which
I will do tomorrow and then I will keep looking.

Re: Water in the wet bay

Reply #22 – December 11, 2021, 08:06:57 pm

Well I think I have found the leak. No water in the wet bay after the heavy rain last
night. The leak was at the back of the roof where the molding piece runs across the
back. I have a temporary fix and next spring I will remove the molding and seal it
properly. Finding leaks is mostly luck. Water was running out at the left rear of the
coach and I taped the molding and the water quit coming in the wet bay.

Re: Water in the wet bay

Reply #23 – December 11, 2021, 08:16:43 pm

I am trying to picture how water entering the coach to rear cap can find its way forward of the rear axle and into the wet bay???

Re: Water in the wet bay

Reply #24 – December 11, 2021, 08:55:44 pm

You are not the only one but that seems to be where it was coming from. It doesn't
make any sense for me but I have found other leaks in building that didn't make any
sense. I'm just hoping that was the problem. I will be keep on checking to see if any
water is back.

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