Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 12-17-2014, 12:57 PM   #1
Senior Member
 
Gadget Man's Avatar
 
Fleetwood Owners Club
Freightliner Owners Club
Join Date: Nov 2001
Location: Southern California
Posts: 2,090
Unhappy Pesky Rain Water Leak

I have a water leak that is driving me crazy. When it rains or when I wash my MH, I get a slight leak along the inside of the right half of the windshield. Itís always in the same exact spot. Thinking it was the outside windshield weatherstripping, I added silicone to the underside of the lip of the rubber windshield molding. This did nothing.

I know that rain can enter at one point and leak inside at an entirely different point, so I decided to try and isolate the windshield as the culprit. I applied duct tape around the entire top of the right side windshield, to prevent any water from penetrating the weatherstripping. It rained good and hard last night. I went out and the rain water still found itís way inside at the same point. This leads me to believe that the water is entering from somewhere else, possibly the roof. A visual check of the roof reveals no obvious entry points.

I called a local RV repair shop and they recommend a negative pressure test. They would remove a roof vent lid and attach a high powered fan. They then coat the outside of the coach with soap and look for bubbles. The thought occurred to me, couldnít I do something similar myself with a high powered fan inside the coach? Anyone try this?

Craig
__________________

__________________
2005 Fleetwood Providence 39J
CAT C7 350, MP-8 Programmer

My wife does all the driving - I just hold the wheel...
Gadget Man is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 12-17-2014, 01:01 PM   #2
Senior Member
 
jenandjon's Avatar
 
Join Date: Aug 2013
Posts: 710
I would bet one of the marker lights are leaking.
__________________

__________________
93 Jayco RK 325
07 Chevy classic crew cab long box LBZ Duramax
Farmer, Trucker, Equipment operator, Mechanic
jenandjon is offline   Reply With Quote
Old 12-17-2014, 01:15 PM   #3
Senior Member
 
dennis45's Avatar


 
Join Date: Jun 2012
Location: BC
Posts: 6,459
Quote:
Originally Posted by jenandjon View Post
I would bet one of the marker lights are leaking.
I agree, I replaced all front and rear markers a year ago and during the process I found a couple that had been leaking.

In your post, you indicate using silicone to seal around the windshield gasket. Or at least that is my understanding. If you do some research on silicone, you will find it does not work at all with rubber.
__________________
Dennis & Carol
2003, 4006, 41' DutchStar, Spartan, ISC 8.3L W/BanksPower - 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake. And the 04 Bird, Sunshine Car.
dennis45 is online now   Reply With Quote
Old 12-17-2014, 01:34 PM   #4
Senior Member
 
dennis45's Avatar


 
Join Date: Jun 2012
Location: BC
Posts: 6,459
I called a local RV repair shop and they recommend a negative pressure test. They would remove a roof vent lid and attach a high powered fan. They then coat the outside of the coach with soap and look for bubbles. The thought occurred to me, couldnít I do something similar myself with a high powered fan inside the coach? Anyone try this?


A thought occurred to me. No, it wasn't overly painful.

Why couldn't you close all windows, vents etc and turn on you vent fans on reverse to draw air into the coach? Assuming of course they do reverse.
Maybe this would prove enough pressure to go outside with a bottle of soapy water and test for leaks. Good Luck.
__________________
Dennis & Carol
2003, 4006, 41' DutchStar, Spartan, ISC 8.3L W/BanksPower - 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake. And the 04 Bird, Sunshine Car.
dennis45 is online now   Reply With Quote
Old 12-17-2014, 01:51 PM   #5
Senior Member
 
MRUSA14's Avatar
 
Entegra Owners Club
Join Date: Nov 2012
Posts: 4,529
I think a fan inside the coach will only circulate air around inside. The idea of a fan in the vent lid is to introduce outside air, which pressurizes the interior of the coach. That increased pressure will then bleed out through any openings or cracks and produce bubbles if you soap the outside. You could do this yourself if you can bring the air in from outside, but just having a fan inside the coach won't work.
__________________
Marc and Jill, Wellington FL
2013 Entegra Anthem 44SL
MRUSA14 is offline   Reply With Quote
Old 12-17-2014, 01:58 PM   #6
Senior Member
 
dennis45's Avatar


 
Join Date: Jun 2012
Location: BC
Posts: 6,459
Quote:
Originally Posted by MRUSA14 View Post
I think a fan inside the coach will only circulate air around inside. The idea of a fan in the vent lid is to introduce outside air, which pressurizes the interior of the coach. That increased pressure will then bleed out through any openings or cracks and produce bubbles if you soap the outside. You could do this yourself if you can bring the air in from outside, but just having a fan inside the coach won't work.
You misunderstood my post.
My suggestion was to turn on the existing Coach Ceiling vent fan, or fans, in reverse (which I believe most are capable of, I may be wrong) and thus have the fan or fans draw air into the coach. With all openings closed it will develop a positive pressure inside the coach which has to escape somewhere like a leak in the roof etc.
__________________
Dennis & Carol
2003, 4006, 41' DutchStar, Spartan, ISC 8.3L W/BanksPower - 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake. And the 04 Bird, Sunshine Car.
dennis45 is online now   Reply With Quote
Old 12-17-2014, 02:07 PM   #7
Senior Member
 
MRUSA14's Avatar
 
Entegra Owners Club
Join Date: Nov 2012
Posts: 4,529
Oh, in that case you are on the right track. While that should work in principle, I don't know if the coach ceiling vent fans are powerful enough, or will supply enough pressure to do what you need. If you try it (and I would), please report back to the rest of us.
__________________
Marc and Jill, Wellington FL
2013 Entegra Anthem 44SL
MRUSA14 is offline   Reply With Quote
Old 12-17-2014, 02:36 PM   #8
Senior Member
 
dennis45's Avatar


 
Join Date: Jun 2012
Location: BC
Posts: 6,459
Quote:
Originally Posted by MRUSA14 View Post
Oh, in that case you are on the right track. While that should work in principle, I don't know if the coach ceiling vent fans are powerful enough, or will supply enough pressure to do what you need. If you try it (and I would), please report back to the rest of us.
Not knowing the details of the OP's coach, I know there is a difference in these fans. Some better than others,,,
I too would be interested in the results of such a test.
__________________
Dennis & Carol
2003, 4006, 41' DutchStar, Spartan, ISC 8.3L W/BanksPower - 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake. And the 04 Bird, Sunshine Car.
dennis45 is online now   Reply With Quote
Old 12-17-2014, 02:37 PM   #9
Member
 
tunafish's Avatar
 
Join Date: Jun 2013
Location: Suncity Center, FL
Posts: 80
I've seen people put a leaf blower in a hatch (vent) on a boat and seal around it by taping a black plastic bag around it. Turn on the leaf bower and it will pressurize the RV, put thick soap around some areas and you'll see the bubbles. Hopefully
__________________
tunafish is offline   Reply With Quote
Old 12-17-2014, 05:39 PM   #10
Senior Member
 
Lt Dan's Avatar


 
Tiffin Owners Club
Join Date: Sep 2013
Location: DFW, Texas
Posts: 1,655
Quote:
Originally Posted by jenandjon View Post
I would bet one of the marker lights are leaking.
x3 on the leaking marker lights. Mine leaked this summer for the first time in that same area, upper right windshield. When it was leaking and still raining, I pulled the inside windshield trim and the cabinet access to the roof and could not locate a leak anywhere. I checked the marker lights and found the foam gaskets underneath had compressed and hardened. Applied mastic under each light and screwed them back down with a little squeezed out around the edges. No leaks since the re-seal.
__________________
Dan & Ro with two Rescued Boston "Terrorists" Jade & Jewel
2017 Phaeton 40IH Maroon Coral - Power Glide Chassis with IFS (05/17)
Previously '15 Tiffin Allegro RED 38QRA and '06 Itasca Sunrise 35A
'12 Jeep Wrangler Sport and/or '08 Honda Goldwing
Lt Dan is offline   Reply With Quote
Old 12-17-2014, 06:04 PM   #11
Senior Member
 
Gadget Man's Avatar
 
Fleetwood Owners Club
Freightliner Owners Club
Join Date: Nov 2001
Location: Southern California
Posts: 2,090
Thanks everyone for the replies. I didn't think about the clearance lights, I'll give those a good look before proceeding.

Thanks guys!

Craig
__________________
2005 Fleetwood Providence 39J
CAT C7 350, MP-8 Programmer

My wife does all the driving - I just hold the wheel...
Gadget Man is offline   Reply With Quote
Old 12-17-2014, 11:01 PM   #12
"Formerly Diplomat Don"
 
Dutch Star Don's Avatar
 
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 9,292
Gadget Man......I also think you probably have marker light issues. With that said, don't just seal around them. To do it right, pull them off, clean the surface and then put a large enough glob of silicone behind the light to seal the hole where the wires come through the fiberglass. Squirt some silicone into the two screw holes and then reinstall the marker light. Next make a nice clean bead of silicone around the entire marker.

Lastly, squirt some silicone over the two screw heads and then a small bead around the edge of the lens and install. You'll now be sealed completely. Sounds like a lot, but only takes a few minutes each.
__________________
Don & Mary
2014 Newmar Dutch Star - All Electric - 450 ISL
2016 GMC Canyon 4WD Crew Cab
Dutch Star Don is online now   Reply With Quote
Old 12-18-2014, 12:15 AM   #13
Senior Member
 
Gadget Man's Avatar
 
Fleetwood Owners Club
Freightliner Owners Club
Join Date: Nov 2001
Location: Southern California
Posts: 2,090
Will do, thanks Don.

Craig
__________________
2005 Fleetwood Providence 39J
CAT C7 350, MP-8 Programmer

My wife does all the driving - I just hold the wheel...
Gadget Man is offline   Reply With Quote
Old 12-18-2014, 01:28 AM   #14
Senior Member
 
adamfolger's Avatar
 
Monaco Owners Club
Workhorse Chassis Owner
Join Date: Aug 2006
Location: MotherLoad foothills approx.60 m.s east of Sacramento
Posts: 1,226
Silicone does not stick to any surface for long. I would use plumbers putty in the screw and wire holes and a thin bead (roll it in your palm) under the marker base. No need to seal the lenses. That's what a good plumber will use to seal your kitchen sink to the counter. Lasts for years....just sayin
__________________

__________________
Full time since Nov 2012 RVM#41 Gary and Marian Hill 2001 Monaco Dynasty Jack 38' 370 hp ....If it ain't broke I can still fix it.
Like putting shoes on an octopuss, so are the days of our lives....
adamfolger is offline   Reply With Quote
Reply

Tags
leak, water, water leak



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Water leak Larry B. Class A Motorhome Discussions 2 10-01-2014 02:11 PM
Water leak in the rear storage Cola ny MH-General Discussions & Problems 2 08-17-2014 06:31 AM
'04 Dolphin Water Manifold Area Leak jlb27537 National RV Owner's Forum 9 03-20-2014 08:04 AM
Help -water leak JWLSC Fleetwood Products Owner's Forum 10 01-30-2014 03:28 AM
Furnace squeal and water leak coachmanrvr Tiffin Motorhomes Owners Forum 2 01-19-2014 07:59 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:03 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.