Dicor question.. I'm not sure, need help

OP here....

Just sent private message sent to Dicor. That reads...

"Dicor...some confusion on what is the proper use of your product. Please help by posting an answer."

Thanks


(Well, no I didn't send them a message. They don't accept PM's according to the warning box after hitting the send button)

I'm pretty sure user name "Dicor" is dicor being their it has their www address of dicor.com

But their a "new" member, maybe still shy??:)

New Member

Currently: Unknown

Real name: Dicor Corporation

Joined: 07/28/2015

RVing since: N/A

No. of posts: 4 ( average posts per day: < 1 ) View Posts | Notify Me of New Posts

Location: Elkhart, IN

Website: www.dicor.com

coolmom42 wrote:
You should also take off that trim strip and caulk over the screw heads that hold the gutter on. The screw heads are a common point for water intrusion.

Excellent point every external screw is a prime candidate to wick and cause horrendous damage unseen for months or years. I'm a firm believer that caulk of anykind except for the 3M 4000/5000 Marine adhesives/sealants should only be used as a second line of water defense. Exterior lights and their mounting screws and wire penetrations are another great source for water damage. I have developed what I think are fool proof guaranteed methods to take care of these potential issues using a combination of Eternabond double sided and Roof Seal tapes. See the link in my signature for details.

Larry

You should also take off that trim strip and caulk over the screw heads that hold the gutter on. The screw heads are a common point for water intrusion.

For what it is worth:
I tried the non-self leveling Dicor (from a caulking tube) on vertical surfaces on my TT and gave up on it.
I was trying to reseal some vertical seams.
It made one sticky mess.
I went to regular water proof bath tub caulk and it did a much smoother and easier job. That was a year ago, and I have been quite happy with the results

Jack L

Old-Biscuit wrote:
Per Dicor (self-leveling & non-sag lap sealant)

Compatible with EPDM and TPO sheeting, it adheres firmly to aluminum, mortar, wood, vinyl, galvanized metal, fiberglass and concrete.

I've never used any 'primer'....just clean surface free of any old loose caulking

Unfortunately, not quite true. I'm surprised Old-Biscuit wouldn't know this but Dicor did a few years ago issue this warning about using their conventional lap sealants on the new generation of TPO roofing material that was beginning to show up on the market as the result of patent expiry on the original formulation. Complaints were being received that conventional Dicor, when used on this new generation of TPO, would bubble so to address that issue the company introduced a new 2 part system called Ultra Sealant and that's the product the OP is using. I'd suggest he contact Dicor for the correct answers to his query, not rely on ill informed WAGs here on the forum. :R

FWIW, our previous 2008 KZ Spree which we purchased in the spring of 2007 had a TPO roof and because it had the original version of TPO roof sheeting I used conventional Dicor self leveling lap sealant on it with great results, no issues at all. :B However, that was then and this is now so anyone who owns a trailer with TPO sheeting needs to know just which version is on their trailer and as such use the correct lap sealant designed for use with that particular version. Unfortunately the OP hasn't provided any info about his own trailer but from his description his dealer presumably identified it as the type of TPO requiring the use of Dicor's 2 part Ultra Sealant system.

Per Dicor (self-leveling & non-sag lap sealant)

Compatible with EPDM and TPO sheeting, it adheres firmly to aluminum, mortar, wood, vinyl, galvanized metal, fiberglass and concrete.

I've never used any 'primer'....just clean surface free of any old loose caulking

Old-Biscuit wrote:
Dicor non-leveling is what you should use.

Use the self leveling and it will run not side of trailer.

My thoughts exactly.

Except does the non-leveling (or non-sag) stick to TPO for a good water tight seal? And should I use the primer on it before I run a bead?

Dicor non-leveling is what you should use.

Use the self leveling and it will run not side of trailer.