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08-07-2016, 08:44 AM
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#1
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Member
Join Date: May 2016
Posts: 54
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Class C shower surround to tub caulking
Hi all, I tried to search on this but could not find any clear direction.
I am trying to decide whether or not to caulk the shower surround walls to the tub where they overlap.
From what I have been able to gather so far there seems to be two schools of thought on this:
1 - Caulk the gap to seal everything together,
2 - Leave it un-caulked, the surround is actually inside the tub's perimeter, and this will allow air to circulate.
I would like to know what others have done.
Thanks
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2018 Forest River - 2291SF
1999 Road King
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08-07-2016, 08:56 AM
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#2
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Senior Member
Winnebago Owners Club Ford Super Duty Owner
Join Date: Nov 2010
Location: Williamsburg, VA
Posts: 650
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When I installed a new tub and surround in the s&b several years ago the instructions said not to caulk that joint. If any condensation gets back there it can run down the back of the surround and get into the tub instead of building up behind it.
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1999 Winnebago Minnie 29', Ford V10, Close to stock.
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08-07-2016, 09:04 AM
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#3
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Senior Member
Join Date: Sep 2012
Posts: 8,055
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Don't calk. Everything in the MH flexs so it will create other problems as well as the ventilation issue.
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08-08-2016, 05:31 AM
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#4
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Member
Join Date: May 2016
Posts: 54
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Thanks guys, the feedback is appreciated.
So far I am also leaning in the "no caulk" direction, I don't want to trap moisture and cause a mold issue or other problem from dampness. Since I have already removed the caulking I will remove the access panels, run the shower against the walls and see if I get any spillover areas.
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2018 Forest River - 2291SF
1999 Road King
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08-29-2016, 08:28 AM
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#5
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Senior Member
Join Date: Apr 2016
Location: Virginia Beach
Posts: 195
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So if not caulked, where does the water go?
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08-30-2016, 07:48 AM
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#6
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Senior Member
Join Date: Sep 2012
Posts: 8,055
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Quote:
Originally Posted by bargeman
So if not caulked, where does the water go?
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Down the drain. The walls overlap the shower pan (floor) so water running down the walls continues down the side of the pan to the floor and on to the drain. You might be surprised how many places rely on gravity to control water.
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08-30-2016, 08:06 AM
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#7
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Senior Member
Join Date: Apr 2016
Location: Virginia Beach
Posts: 195
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What about around the top where the shower walls meet The ceiling ?
__________________
- 2017 Coachmen Mirada 35LS - Class A Gasser
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08-31-2016, 07:53 AM
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#8
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Senior Member
Join Date: Sep 2012
Posts: 8,055
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Quote:
Originally Posted by bargeman
What about around the top where the shower walls meet The ceiling ?
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Why are you spraying the ceiling? ;-)
If the fit is tight, as it should be, and the user is sensible, that should not be an issue. If not do what you need to. The point was to leave the bottom joint free to drain.
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08-31-2016, 08:05 AM
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#9
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Senior Member
Join Date: Feb 2011
Location: Snowbird - Waterford Mi and Citrus Springs Fl.
Posts: 3,609
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Something to consider - anything that restricts that surround's ability to expand and contract is a definite no-no. Just like vinyl siding on a house, that thing moves with temp changes much more than people might imagine. Caulking is not likely going to hold long on either end.
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1997 37' HR Endeavor, 275hp Cat, Freightliner
03 CR-V Blue Ox, Ready Brake
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09-01-2016, 10:49 PM
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#10
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Senior Member
Join Date: Apr 2016
Location: Virginia Beach
Posts: 195
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I'm replacing the ceiling and skylight as part of a re-roofing job. I'm putting back a fan instead of skylight but also replacing the ceiling.... Original was caulked....
__________________
- 2017 Coachmen Mirada 35LS - Class A Gasser
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09-14-2016, 03:50 PM
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#11
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Senior Member
Join Date: Apr 2016
Location: Virginia Beach
Posts: 195
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Soooo...... If I am replacing the ceiling, frame, wood, luan, etc... When I'm done, what caulk would you recommend I use for the top of the shower to the ceiling joint?
__________________
- 2017 Coachmen Mirada 35LS - Class A Gasser
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09-21-2016, 02:40 PM
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#12
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Member
Join Date: May 2016
Posts: 54
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After removing the silicone sealant from the tub to shower surround wall gap I tested the shower/tub in my B+ for water tightness. It leaks out of the tub at the bottom corner where the shower door side and bottom frame channels meet the top tub surface and the shower surround wall.
It seems that the water is traveling along the top of the tub, going behind the wall and coming out onto the bathroom floor, and behind the wall.
I was able to get a look behind the wall and there is no sealant between the back of the shower surround wall, the tub, and the shower door channel. To make things a bit harder to address is that the end of the tub section that goes up behind the surround tapers down to the tub surface behind the shower door channel.
Still with me?
Anyway, I think the only way to seal this is to drill a hole through the shower surround wall close to the vertical shower door channel, but not through the tub behind it, and inject some self leveling silicone window sealant through the hole and then seal the vertical door track to tub surround.
Does anyone have any thought on whether this plan will work? Experience with this dilemma and a solution to your own similar situation?
Thanks in advance and happy/safe camping.
__________________
2018 Forest River - 2291SF
1999 Road King
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09-27-2016, 02:27 PM
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#13
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Member
Join Date: May 2016
Posts: 54
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bump
__________________
2018 Forest River - 2291SF
1999 Road King
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10-07-2016, 04:59 PM
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#14
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Member
Join Date: Sep 2016
Posts: 30
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would it be too hard to remove that vertical and lower shower door slide channel and sealing that whole vertical shower wall and tub edge?
then sealing the track channel on the shower side so water doesn't get behind it
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