What sealant to use between coach and chassis

[Compnerd]

Hello, we purchased a Thor freedom elite 28h this last year. It's a 2015 and the sealant that is between the chassis of the e450 and where the coach is is starting to crack. This is the area right behind the doors of the e450.

Has anybody resealed this before? If so, what did you use? Or, maybe it's something not worth worrying about.

Thanks in advance for your input.

[taylorbob1]

I have same issue on my Vegas.
So, lookin’ for answers too

[ducksface]

I've thought a bit about this and I can't come up with a concern.
But
Its not structural so the choice of filler isn't important.
I'm imagining it's there just to fill a gap.

[EA37TS]

About five years ago I had an issue on the Challenger and Thor suggested I use Geocel 2300. That is what they said they use for all exterior areas. Not sure if it would be the same for you but that is what they had me use to seal around a trim piece where the walls were attached.

https://www.geocelusa.com/product/2300-mhrv-sealant/

[rynosback]

Originally Posted by EA37TS

About five years ago I had an issue on the Challenger and Thor suggested I use Geocel 2300. That is what they said they use for all exterior areas. Not sure if it would be the same for you but that is what they had me use to seal around a trim piece where the walls were attached.

https://www.geocelusa.com/product/2300-mhrv-sealant/

Geocel is CRAP. Thor has been using it on DRVs and it DOES NOT hold up at all. Cracks after just months. And if you read the technical sheet on it, you can not reapply. You have to strip it down and start over. Most DRVers have been using Lexel. It has been holding up extremely well and is super clear.

[EA37TS]

Originally Posted by rynosback

Geocel is CRAP. Thor has been using it on DRVs and it DOES NOT hold up at all. Cracks after just months. And if you read the technical sheet on it, you can not reapply. You have to strip it down and start over. Most DRVers have been using Lexel. It has been holding up extremely well and is super clear.

Held up on the Challenger for over 4 years with no discoloration.

To each their own.

[Compnerd]

Thanks for the input. After looking around some on other sites, I did find multiple hits for geocel for use on rvs. Most seem happy with the results. I couldn't find much on lexel for rv use.

I also don't think there is anything that will be structurally harmed by the cracked sealant but I want to make it look better. It's a little cold now to try it but going to buy some geocel and get it done in the spring.

Happy camping!!

[SemperFi]

Originally Posted by Compnerd

Thanks for the input. After looking around some on other sites, I did find multiple hits for geocel for use on rvs. Most seem happy with the results. I couldn't find much on lexel for rv use.

I also don't think there is anything that will be structurally harmed by the cracked sealant but I want to make it look better. It's a little cold now to try it but going to buy some geocel and get it done in the spring.

Happy camping!!

Hi Compnerd,

My 2015 28H has not has this challenge, yet We also purchased our motorhome used and did a lot of improvements. It has been a great unit for us! Happy travels. Dave