Good Sam Club Open Roads Forum: Class C Motorhomes: Caulking
Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Class C Motorhomes

Open Roads Forum  >  Class C Motorhomes  >  Class C

 > Caulking

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
ybconway

Ontario

New Member

Joined: 05/02/2020

View Profile


Offline
Posted: 11/28/20 06:54pm Link  |  Quote  |  Print  |  Notify Moderator

My rig is a 2018 Forest River ex rental, 40,000 miles. There is a crack in the sealant between the cab and the house above the windshield.
I ordered 4 tubes of Dicor Lap Sealant and because I'm lazy a powered caulking gun. I'll tackle the seams this spring or at least the ones that look like they may need redoing.
My question is how hard is it to get the old sealant off. If the seam doesn't look bad should I put a bead over it anyways. I haven't gone to Youtube but that will be my next place to look. Just wanted to hear others experiences.

DrewE

Vermont

Senior Member

Joined: 08/23/2014

View Profile


Offline
Posted: 11/28/20 07:53pm Link  |  Quote  |  Print  |  Notify Moderator

For Dicor lap joint sealant, there's no need to get the old off, or certainly not off completely. If there's a considerable buildup, trim it down (carefully) with a razor blade or similar; then just clean it well and put a small quantity of fresh over, sealing it into the cracks.

Four tubes of Dicor are probably enough to redo an entire roof from scratch. You definitely won't run out.

Incidentally, most of the time the seal between the cabover section and the cab is actually made with a rubber gasket captured between the chassis roof and the bunk board or equivalent and held in with the screws that mount the two together, usually a bunch of fairly small screws driven up from inside the cab. I don't know if your particular model follows that typical scheme or does something unusual, but I would not expect it to rely on exterior caulking for the cab to cabover seal.





Lwiddis

South of Lone Pine, California

Senior Member

Joined: 08/12/2016

View Profile



Good Sam RV Club Member

Offline
Posted: 11/28/20 08:02pm Link  |  Quote  |  Print  |  Notify Moderator

By the time Spring comes and you start tackling, the game (and the damage) will be over, final, done, completed, finished etc.


Winnebago 2101DS TT & 2020 Chevy Silverado 1500 LTZ Z71, 300 watt solar-parallel & MPPT, Trojan T-125s. TALL flag pole. Prefer USFS, COE, BLM, NPS, TVA, state & county camps. Bicyclist! 14 year Army vet-11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad


ron.dittmer

North-East Illinois

Senior Member

Joined: 02/26/2007

View Profile


Offline
Posted: 11/29/20 07:40am Link  |  Quote  |  Print  |  Notify Moderator

I imagine "cleanliness" is key for the new Dicor to stick well. If the old is dirty and sun-faded, cut it back to get a clean surface to bond to. So your plan to remove the worst of the original caulk makes sense to me.

* This post was edited 11/29/20 07:47am by ron.dittmer *


2007 Phoenix Cruiser model 2350, with 2006 Jeep Liberty in-tow


bobndot

USA

Senior Member

Joined: 08/21/2007

View Profile


Offline
Posted: 11/29/20 08:04am Link  |  Quote  |  Print  |  Notify Moderator

I use Dicor lap sealant on my rv roof and marine 3m 4200 on rv vertical seams which is much easier to work with than proflex rv on the vertical seams. It also lasts for years. Ive been using it on my boats for years.

ybconway

Ontario

New Member

Joined: 05/02/2020

View Profile


Offline
Posted: 11/30/20 09:29am Link  |  Quote  |  Print  |  Notify Moderator

Thanks for the replies. I'll look into the Marine 3m 4200. I have used marine poly sulfide bedding compound for setting glass in a skylight. Strong stuff but is susceptible to UV light.

bobndot

USA

Senior Member

Joined: 08/21/2007

View Profile


Offline
Posted: 11/30/20 12:11pm Link  |  Quote  |  Print  |  Notify Moderator

ybconway, this year was the first time I ran a line of caulk then sprayed it with spray, an alcohol cleaner . The caulk does not stick to the cleaner when you wipe it off, it only remains in the dry crack.
It made a perfect caulking job and was quick and easy. I'm actually looking forward to caulking something else now.
Sorry, I don't have a passport or an enhanced license. [emoticon]

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 

Open Roads Forum  >  Class C Motorhomes  >  Class C

 > Caulking
Search:   Advanced Search

Search only in Class C Motorhomes


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2021 CWI, Inc. © 2021 Good Sam Enterprises, LLC. All Rights Reserved.