ybconway
Ontario
New Member
Joined: 05/02/2020
View Profile
 Offline
|
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
|
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
near Bishop, California
Senior Member
Joined: 08/12/2016
View Profile
Good Sam RV Club Member
Offline
|
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
|
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
|
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
|
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
|
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]](https://forums.goodsamclub.com/sharedcontent/cfb/images/biggrin.gif "biggrin")
|
