Go Back   Keystone RV Forums > Keystone Tech Forums > Repairs & Maintenance
Click Here to Login

Reply
 
Thread Tools Display Modes
 
Old 11-21-2017, 06:59 PM   #1
kfxgreenie
Senior Member
 
Join Date: Jun 2015
Location: WI
Posts: 351
ProFlex or Dicor

On the seam at the edge of the roof which sealant should be used. It appears the factory used some silicon that was lifting at the edge that contacted the EPDM. I used my thumb and scraped it down to where it appears the sealant is in good shape, but prefer to throw a bead over it for safety.

One other area of concern for me. On all three of the slide roofs, at all the outer edges all the screws are starting to come up though what looks like the factory's cheap eternabond type tape. Would you just drop a dab of dicor on each head or put a strip of eternabond over the entire row of screws?

The screws in question are protruding out of the dirty part of the slide picture.
Attached Thumbnails
Click image for larger version

Name:	Roof Seam.jpg
Views:	80
Size:	52.9 KB
ID:	14645   Click image for larger version

Name:	Slide Edge1.jpg
Views:	81
Size:	108.2 KB
ID:	14646  
__________________

kfxgreenie is offline   Reply With Quote
Old 11-21-2017, 07:10 PM   #2
sourdough
Senior Member
 
Join Date: Feb 2014
Location: W. Texas
Posts: 5,274
I've recently had what appear to be roof screws pushing up on the edges of my roof, not in the area you have. I cut 4x4 sections of Eternabond tape and centered them over the areas that were pushed up. Further action may be required but I don't think so. I also had the silicone issues you mention. I used alcohol (70%?) with a rag and rubbed them down. Worked well. Mine was still in excellent shape once rubbed down. They looked like the edges were just fly away but the actual seal was good. I'm not sure that Dicor is going to stick to silicone if left in place, and as we know, silicone removal is a real pain.
__________________

__________________
Danny & Susan wife of 50 years
2014 Ram 2500 6.4 4x4 CC
2014 Cougar High Country 319RLS
sourdough is offline   Reply With Quote
Old 11-21-2017, 07:16 PM   #3
chuckster57
Site Team
 
chuckster57's Avatar
 
Join Date: Jul 2014
Location: Modesto
Posts: 7,570
The edge of the roof here it meets the screw strip can be sealed with non leveling Dicor.
Sourdough: if you read the eternabond directions, I believe it says to seal the edges with Dicor.
__________________

2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.

Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
chuckster57 is offline   Reply With Quote
Old 11-21-2017, 07:20 PM   #4
JRTJH
Site Team
 
JRTJH's Avatar
 
Join Date: Mar 2011
Location: Gaylord
Posts: 12,638
This is an opinion, so it's not based on any "specific technical guidance" from DICOR or ProFlex.....

Silicone is a PITA to work with and even more of a PITA to try to remove. I'd suggest never using it on an RV....

That said, if it's already there, you don't have much choice..... So, if it is silicone, about the best you can do is to clean it well, then apply either ProFlex "non-sag" or DICOR "non-leveling" sealant over it. Span the silicone completely, so the new sealant covers it from one edge of the roof membrane to the other. That way, you're dealing with a "known good bond on both sides of the silicone, so whether the new sealant bonds with silicone or not, there's a watertight seam on all sides of the silicone. Cover the silicone completely with new sealant, don't try to "bead the edges of the silicone" as that won't work.....

There has been some discussion on whether to use ProFlex on TPO and DICOR on EPDM roofing. According to DICOR, either is acceptable and both will give good results if applied per instructions.

Whatever you do, from the picture you posted, you're going to have to leave your slide out (at least partially) for several days before any sealant will cure properly and not adhere to the slide seals through the winter storage.

You may find that at this time of the year, if you're going to be putting your trailer in storage for an extended time, it may be better to cover the slide with a blue tarp or some other type of weatherproofing so it won't leak and then, next spring when the climate is better for curing sealant, do the repair at that time.

Whatever you do, protect your rubber slide seals from uncured sealant on the slide roof or you'll be replacing slide seals the first time you extend the slide and the seals are glued to the slide !!!!!
__________________
John



2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
JRTJH is offline   Reply With Quote
Old 11-21-2017, 08:00 PM   #5
sourdough
Senior Member
 
Join Date: Feb 2014
Location: W. Texas
Posts: 5,274
Quote:
Originally Posted by chuckster57 View Post
The edge of the roof here it meets the screw strip can be sealed with non leveling Dicor.
Sourdough: if you read the eternabond directions, I believe it says to seal the edges with Dicor.

Thanks Chuckster. I received the Eternabond from Amazon and it had a little red and white label on the front. I did not see any instructions but I could have missed them (they may have been so tiny my quadfocals couldn't focus). Putting the Dicor on the edges makes sense because even when I rolled the Eternabond down there were tiny lips where the material was pushed down. Mine was placed on areas in the middle of nowhere so to speak on the roof but when I return I will cover the edges with Dicor. Once again, thanks.
__________________
Danny & Susan wife of 50 years
2014 Ram 2500 6.4 4x4 CC
2014 Cougar High Country 319RLS
sourdough is offline   Reply With Quote
Old 11-22-2017, 04:15 AM   #6
zuley
Senior Member
 
Join Date: Oct 2012
Location: Guelph, On
Posts: 300
One thing I have been wanting to adress or question and this may be as good of a time as ever. Hoping Chuckster can chime in and answer. Had a small leak in our 23RB over the left front closet this past summer during a heavy down pour. Went to our local RV store and asked for a tube of Dicor. They asked what type of roof I had and what year. Told them 2013 rubber roof. Apparently, per this dealer, there was two different rubber roofs used and somewhere around 2013 they switched. Dicor works on the later roofs but will cause harm to the earlier roofs. This was news to me. They showed me two material samples and had me identify the material mine was made from. Walked out of the store with a product other than Dicor. Don't recall the name. Found a hair line crack which I resealed using the product supplied. End of leak.
So, what's the story here? I was not aware that there was anything to use other than Dicor.
zuley is offline   Reply With Quote
Old 11-22-2017, 04:53 AM   #7
chuckster57
Site Team
 
chuckster57's Avatar
 
Join Date: Jul 2014
Location: Modesto
Posts: 7,570
Hope this helps:
https://dicorproducts.com/video-library/#close

http://www.alphasystemsinc.com/productcare
__________________

2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.

Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
chuckster57 is offline   Reply With Quote
Old 11-22-2017, 05:49 AM   #8
Gegrad
Senior Member
 
Gegrad's Avatar
 
Join Date: Jul 2017
Location: Willow Spring
Posts: 380
My premier has the Alpha TPO roof on it, so I bought a tube of the Alpha Systems sealant for sealing my seams from Amazon. It has worked pretty well so far and I haven't had any leaks after conducting routine inspections and sealing some places where the original sealant had developed the usual small cracks. I also have 3/4 tube of Dicor left I had used on my old Passport. The directions on the Dicor specifically say "For use on EPDM and some TPO roofs. I didn't want to take the chance that my TPO would be the one the Dicor wouldn't hold to, so I bought the Alpha systems sealant. $10 to make sure I had the absolute correct stuff was a no brainer.
__________________
2014 Bullet Premier 29bh in Charocal
2013 Silverado 2WD CC, K5L cooling package
2011 Passport 2510RB (Sold)
Gegrad is offline   Reply With Quote
Old 11-22-2017, 06:56 AM   #9
kfxgreenie
Senior Member
 
Join Date: Jun 2015
Location: WI
Posts: 351
Thanks Fella's. Dicor non-self leveling will be placed between the metal screw down strip and the EPDM covering all the old "silicon type substance" on the roof edge. I will slide a slide enough to get a picture of some of the screws that are protruding so there is a better Idea of the problem. Thankfully while not camping the RV sits inside a shed. I keep the shed at 42*, but plan to take it to 65-70* for a few days when I have all the supplies to seal areas of concern. I have the time now and the old girl is 5 years old now, so going over everything with a fine tooth comb while waxing and doing maintenance will keep some of the cabin fever away.
kfxgreenie is offline   Reply With Quote
Old 11-22-2017, 10:36 AM   #10
TyeeMan
Member
 
Join Date: Sep 2017
Location: Winsted
Posts: 51
Dumb question here - If screws are coming up under the rubber roof posing a potential leak problem, is it a bad idea to cut a tiny slit just big enough for a nut driver or screw driver bit and drive the screw back to where it came from? Then seal the slit with Dicor or Eternabond or combination of both.
I mean, if the screw totally comes out you'll probably have a leak anyway, , but that also means that something is starting to come apart right?

I have a couple screws like this on our current TT, not a Keystone. Soon to be Premier owners though.
__________________

TyeeMan is offline   Reply With Quote
Reply

Thread Tools
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
Forum Jump

Powered by vBadvanced CMPS v3.2.3
Disclaimer:

This website is not affiliated with or endorsed by the Keystone RV Company or any of its affiliates in any way. Keystone RVģ is a registered trademark of the Keystone RV Company.


All times are GMT -8. The time now is 01:31 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.