Caulking

Kesta
Reg. Oct 2003

Posted 2007-10-14 9:27 AM (#69328)
Subject: Caulking

Veteran

Posts: 121
100

Location: MO

I need to caulk the roof seams of my trailer. What type of caulk or other product do you recommend? Of course, I want something that does a good job and lasts a long time. Trailer sits outside so it is exposed to extreme heat and cold. Will I need to remove the old caulk before applying the new? I would rather just go over the top of what is existing.

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hosspuller
Reg. Oct 2003

Posted 2007-10-14 10:10 AM (#69331 - in reply to #69328)
Subject: RE: Caulking

Expert

Posts: 2953
2000

Location: North Carolina

Kesta ... This area has been discussed many times. Use the search button for more opinions... This is from my experience..

I think that caulking over the old leaking caulk is a waste of your time and materials. You're depending on the already failed caulk to support the new caulking.

The best and easiest method of removing the old caulk is a knife to cut the majority off. Then use a wire brush wheel in as powerful a side grinder or drill you can get. The wire brush leaves a clean metal surface for the new caulk.

Sundowner uses this caulking on the exterior of their trailers. It's very durable.

The caulk used is a moisture cured polyurethane. Manufactured by Sika Corp.

30800 Stephenson highway

Madison Heights, MI 48071, 248-577-0020

The name is Sikaflex - 221 SF, Product code is 220-242

The color I used is "AL Gray"

You might also try marine / boat supply as a place to purchase it too.

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gard
Reg. Aug 2007

Posted 2007-10-14 10:15 AM (#69332 - in reply to #69328)
Subject: RE: Caulking

Expert

Posts: 5870
5000

Location: western PA

Another excellent caulk/ sealant/adhesive is 3M5200. It is available in most marine suppliers, big box stores etc. As was previously mentioned, a properly prepared surface is necessary for any product to work well.

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