 |
06-18-2016, 01:26 PM
|
#1
|
|
Montana Master
Join Date: Nov 2013
Location: Willow Spring, NC
Posts: 992
M.O.C. #13909
|
Dicro vs. Silicone Caulk
My 2014 3402RL had the edge along each side of the rubber roof sealed with Silicone caulk at the rail Also along the front and back they used Silicone caulk about 4" to seal the cap over to the side rail. All the stuff on the top was sealed with self-leveling Dicor. On the front and back caps they used Dicor except that 4" as the roof rolls over the side.
I had a leak inside where the carpet at the door side rear window meets the wall. We could not find the leak because we didn't see any water coming in. I got a mobile tech to look at it in Columbia Falls, MT. He showed me how the Silicone caulk just rubbed off by brushing it with his hands. So the bet was the old caulk. So the caulk is 2 and 1/2 years old and already bad.
What the tech said to me was new info. He said the manufactures are bad about not keeping both self leveling and non-self leveling Dicor handy. And sometimes when they should seal the rolling edges of the roof with non-self leveling Dicor they just use Silicone caulk because it's handy and will work for the warranty period. He said the rubber roof manufactures say to only use Dicor and not Silicone. Apparently, the self leveling Dicor would not stay on the rolling edge at the caps.
He stripped all my roof Silicone caulk off and re-caulked with a small bead of Dicor. So far no leaks inside.
__________________
Jim & Martha Abernathy
2014 Montana 3402RL Level UP, Sailun S637's, TST 507, 500W solar
2014 Ram 3500 Laramie® 4x2 diesel dually crew-cab 3.73 axle, Reese R20
|
|
|
|
06-18-2016, 02:22 PM
|
#2
|
|
Montana Master
Join Date: Oct 2006
Location: McKinney
Posts: 7,165
M.O.C. #6433
|
What tech said could be true. Could be urban myth if he had no first hand knowledge. A little hard to believe that would be common practice. But glad you got the problem taken care of.
__________________
Bill & Patricia
Riley, our Golden
2007 3075RL (recently sold, currently without)
|
|
|
|
|
06-18-2016, 02:29 PM
|
#3
|
|
Montana Master
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
|
I use dicor, silicon does not work well with rubber roofs.
__________________
Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
|
|
|
|
|
06-18-2016, 02:31 PM
|
#4
|
|
Montana Master
Join Date: Nov 2013
Location: Willow Spring, NC
Posts: 992
M.O.C. #13909
|
The tech said he'd been in the RV industry for 14 years and moved to Mobile RV repair company for more money and better working situation. The RV park said they vetted the company and is the only one they recommend. They don't want customers ****** off. They get repeat business.
__________________
Jim & Martha Abernathy
2014 Montana 3402RL Level UP, Sailun S637's, TST 507, 500W solar
2014 Ram 3500 Laramie® 4x2 diesel dually crew-cab 3.73 axle, Reese R20
|
|
|
|
|
06-18-2016, 02:52 PM
|
#5
|
|
Montana Master
Join Date: Oct 2004
Location: Salem
Posts: 7,550
M.O.C. #2283
|
I ask our RV dealer about silicone he said the Dicor was better but never said why and I didn't bother to ask.
Lynwood
|
|
|
|
|
06-18-2016, 04:25 PM
|
#6
|
|
Montana Master
Join Date: May 2016
Location: Cuyahoga Falls
Posts: 699
M.O.C. #18572
|
I'm not a chemical engineer, but I believe silicone caulk does not fully "cure" to rubber.
I was told during a seminar, by a service manager, to not use silicone on the roof.
__________________
ATC/NAC Jerry A. Burkholder, USN (RET.)
Rule #1. The Chief is always right.
Rule #2. When in doubt, refer to rule #1.
|
|
|
|
|
06-18-2016, 04:27 PM
|
#7
|
|
Montana Master
Join Date: Nov 2013
Location: Willow Spring, NC
Posts: 992
M.O.C. #13909
|
Quote:
quote:Originally posted by JABURKHOLDER
I'm not a chemical engineer, but I believe silicone caulk does not fully "cure" to rubber.
I was told during a seminar, by a service manager, to not use silicone on the roof.
|
Not surprising that Keystone ignores this.
__________________
Jim & Martha Abernathy
2014 Montana 3402RL Level UP, Sailun S637's, TST 507, 500W solar
2014 Ram 3500 Laramie® 4x2 diesel dually crew-cab 3.73 axle, Reese R20
|
|
|
|
|
06-19-2016, 02:05 AM
|
#8
|
|
Montana Master
Join Date: Aug 2012
Location: Northport
Posts: 624
M.O.C. #12724
|
If you go to Dicor's web site under topic of replacing roof material; Dicor clearly states not to use silicone on EPDM. As stated Keystone uses silicone the length of camper on drip rail and you can rub it off with finger.
__________________
Paul Northport,AL W4XH
2013 358 RLT Mountaineer
2008 Silverado Duramax
|
|
|
|
|
06-19-2016, 12:18 PM
|
#9
|
|
Montana Master
Join Date: Feb 2003
Location: Englewood
Posts: 3,095
M.O.C. #164
|
Correct Silicone not compatible with EPDM roof material!
|
|
|
|
|
06-19-2016, 01:28 PM
|
#10
|
|
Montana Master
Join Date: Nov 2007
Location: Kville
Posts: 2,865
M.O.C. #7871
|
Quote:
quote:Originally posted by 1retired06
I use dicor, silicon does not work well with rubber roofs.
|
Agree...silicone is way over rated.
|
|
|
|
|
06-20-2016, 05:45 AM
|
#11
|
|
Montana Master
Join Date: Jan 2005
Location: North Ridgeville
Posts: 20,229
M.O.C. #2839
|
We use what the roof manufacturer says to use.
|
|
|
|
|
06-20-2016, 06:14 AM
|
#12
|
|
Montana Master
Join Date: Oct 2004
Location: Salem
Posts: 7,550
M.O.C. #2283
|
Rich that works every time.
Lynwood
|
|
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Threads |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Linear Mode
