Roof Leak

[Rick M]

On our new 08/09 Alpine 40MDTS the 'new' front cap seems to have a leak.
It looks like they used a gray plumber's putty as a sealant between the Cap & Roof, which the putty like substance developed some cracks in it.

Question: Has anyone used LEXEL for a roof sealant or what might be better?

Thank You
Rick

Thanks for responses so far. - I was wondering if there were other recommendations?
I've used Lexel in the past for other things - I find it does what it claims it will do:
See LEXEL web page for information.

[Rick M]

On our new 08/09 Alpine 40MDTS the 'new' front cap seems to have a leak.
It looks like they used a gray plumber's putty as a sealant between the Cap & Roof, which the putty like substance developed some cracks in it.

Question: Has anyone used LEXEL for a roof sealant or what might be better?

Thank You
Rick

Thanks for responses so far. - I was wondering if there were other recommendations?
I've used Lexel in the past for other things - I find it does what it claims it will do:
See LEXEL web page for information.

[Ray,IN]

I suggest caution in a DIY re-sealing while your unit is under factory warranty. Butyl caulk is grey, and usually lasts for many years without issues. I've never heard of that product you mentioned.

[Old Rv'er]

Since WRV has gone out of business, there is no longer any factory warranty period. So, check with a few of the dealers who sold them to see what they say, of course they will want to repair it for you for $$$$$, but that might not be so bad. You might also make sure the leak is not the front clearance lights, since they were never very water tight in the first place. Mine leaked when we picked up the coach, they were resealed with silcone caulk and have been fine since that.

[dgerstel]

Dicor is what is recommended by most manufacturers for installing their equipment on the roof.

Dicor Sealant @ CW

This is only good on the roof (level area) due to its self-leveling properties. Make sure that any loose old sealant is removed and clean the area good before installing new sealant.

[Rick M]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by dgerstel:
Dicor is what is recommended by most manufacturers for installing their equipment on the roof.

Dicor Sealant @ CW

This is only good on the roof (level area) due to its self-leveling properties. Make sure that any loose old sealant is removed and clean the area good before installing new sealant. </div></BLOCKQUOTE>

Thanks Dale - I knew you might have a good idea!
But the Front Cap is about 1/2" higher than the roof - wouldn't the self leveling run off the cap and not seal?

[dgerstel]

Rick,

It doesn't puddle that much. I have used on both of my coaches on that area.

[HarveyP]

If it was mine, I would want a strip of Eternabond tape across the joint, then think about self-leveling caulk over the edges of the tape. Mine is sealed that way and it gives much peace of mind. HarveyP

[Jim A]

I found this website a while back, and I think it is good information. Even if you already have a favorite caulking material you prefer to use, it gives some insight on how to properly seal RV joints. Not just adding caulking to try and fix something that was not properly sealed to start with.

And it talkes about the Eternabond tape referenced above. I used it on my roof vents.

http://www.bestmaterials.com/Handlin...re_in_RVs.aspx

[raptor]

Look at XM anteena base mounted on top of cap. It my need to be sealed.

[takepride]

Jim A:

What a great source of info on RV leaks. I'll be checking over a few things myself.

Thanks!

[RedHotSoup]

I concur with that; I will surely bookmark that site. As always you guys and IRV2 is a great source of information.