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Technical Caulk for Seams

Discussion in 'The Hokey Ass Message Board' started by 1Nimrod, Mar 17, 2025.

  1. 1Nimrod
    Joined: Dec 11, 2018
    Posts: 633

    1Nimrod
    Member

    My 63 C10 has many seams from the factory and they are no longer filled in with caulking, is there a special caulking for vehicles that will not fall out in a few year's?
    Thank Y'all for any help.

    Dustin Sirrine
    (1Nimrod)
     
    Last edited: Mar 17, 2025
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  2. 34Phil
    Joined: Sep 12, 2016
    Posts: 660

    34Phil
    Member

  3. 1Nimrod
    Joined: Dec 11, 2018
    Posts: 633

    1Nimrod
    Member

    Thank You 34Phil

    Dustin Sirrine
    (1Nimrod)
     

  4. 2nd that. Will last as long as you need it to, probably.

    34Phil, I like you signature quote.

    Ben
     
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  5. stubbsrodandcustom
    Joined: Dec 28, 2010
    Posts: 2,536

    stubbsrodandcustom
    ALLIANCE MEMBER
    from Spring tx

    Tip for using seam sealer. Dip your finger tip in Acetone and then wipe over your bead and it will lay it down smooth as factory.
     
  6. 1Nimrod
    Joined: Dec 11, 2018
    Posts: 633

    1Nimrod
    Member

    Thank you firstinsteele Ben, and thank you stubbsrodandcustom for the quick tip on the finger tip.
    I appreciate y'alls help it's very much appreciated...

    Dustin
    (1Nimrod)
     
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  7. nochop
    Joined: Nov 13, 2005
    Posts: 4,368

    nochop
    Member
    from norcal

  8. 1Nimrod
    Joined: Dec 11, 2018
    Posts: 633

    1Nimrod
    Member

    Thank you nochop for your help.

    From Dustin
    (1Nimrod)
     
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  9. nochop
    Joined: Nov 13, 2005
    Posts: 4,368

    nochop
    Member
    from norcal

    A lot neater than stuff in a tube…..don’t ask lol
     
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  10. Lots of good seam sealers out there. Go to your local autobody supplier and see what they stock. A lot of them will be cheaper than 3M.
     
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  11. lostn51
    Joined: Jan 24, 2008
    Posts: 2,559

    lostn51
    ALLIANCE MEMBER
    from Tennessee

    Awe man that takes the fun out of getting it all over the place and making your wife mad at youo_O:rolleyes:
     
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  12. catdad49
    Joined: Sep 25, 2005
    Posts: 6,777

    catdad49
    Member

    Seam sealer, let it set a bit and then smooth it with a little acetone and an acid brush. You can also use the same method with acrylic latex caulk, let it set a bit and smooth with water and an acid brush. Thought I would throw that in there! Worked on a construction crew with a guy called Booger, yes, Booger. One day he said they we had some corking to do. I said, OK , but you need to tell me just what the heck that is. Yep, corking/caulking, same thing!
     
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  13. 1Nimrod
    Joined: Dec 11, 2018
    Posts: 633

    1Nimrod
    Member

    Thank you catdad49.

    Dustin
    (1Nimrod)
     
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  14. Jim Bouchard
    Joined: Mar 2, 2011
    Posts: 1,205

    Jim Bouchard
    Member

    IMG_4611.jpeg
    I use this a lot. About $20 at my paint supplier. I use the acetone trick to smooth it out and I prefer the black over the grey or white unless I was spraying light gray or white paint over it.
    However the color of the sealer probably makes no difference on the top coat.
    Another tip is I try to remove most of the old caulking, both the flaking parts and the parts that aren’t before I use the new sealer. The old sealer that isn’t loose might become loose in the future
     
  15. Fortunateson
    Joined: Apr 30, 2012
    Posts: 5,659

    Fortunateson
    Member

    A tip I learned from my nephew who’s in the trade is to lay some masking tape on either side of the seam. 5he apply the sealer for excellent neatness!
     
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  16. DDDenny
    Joined: Feb 6, 2015
    Posts: 21,062

    DDDenny
    Member
    from oregon

    I don't know how clean your paint is in these areas but even well maintained ones get a little dingy/dirty in there, one suggestion is to give a little swipe of degreaser along the seam line before sealing.
     
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  17. 1Nimrod
    Joined: Dec 11, 2018
    Posts: 633

    1Nimrod
    Member

    Thank you Jim for your help.

    Dustin
     
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  18. 1Nimrod
    Joined: Dec 11, 2018
    Posts: 633

    1Nimrod
    Member

    Fortunateson, thank you for your help as well.

    Dustin
     
  19. 1Nimrod
    Joined: Dec 11, 2018
    Posts: 633

    1Nimrod
    Member

    Denny, yes it's very dirty, it's the area on the roof over the Windshield, roof seems, and in the area over where the Doors close and a few other's places around that area. I'm going to clean the area's up good, tape it off, sand it down, then tape the area off with new tape and use the gray Por15 in those areas, after the Por15 then the 3m (or similar caulking) to fill in those areas and use the quick tip on the acetone finger tip, then apply touch up paint to all the newly sealed up area's. It should be good for some year's, by then I'll be worm food and my oldest Grandson (in my avatar) Bobcat can be the next caretaker of the 63 C10.
    Thank y'all for your help, I really appreciate everyone's experience and help...

    Dustin Sirrine

    PS- of course use actone to clean after each step...
     
    Last edited: Mar 18, 2025
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  20. DDDenny
    Joined: Feb 6, 2015
    Posts: 21,062

    DDDenny
    Member
    from oregon

    One school of thought that I've read is that applying sealer directly on bare steel is ok.
    So, any time you need practice feel free to stop by, other than the NOS primed fenders our 66 Suburban is still in bare metal, that roof was an SOB!
    I'm pretty good at delegating!

    20160802_110121.jpg
     
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  21. You've gotten some sound advice..... Just don't lay it on real thick in the "seam" areas. Between the top/roof as you will, there are/is stepped metal in the seam. Clean,clean,clean, then apply........ Been there myself!
     

    Attached Files:

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  22. If you are doing the roof or anywhere it will be seen spend the extra money and get a good quality 2k Epoxy control flow seam sealer. Forget about the Por 15 just get it cleaned up really well gun it out give it a super quick wipe with your finger and leave it it will flow out to perfectly smooth. If its an area that needs an edge tape it and do the same thing. It will look like the sample on the far left every time regardless of how experienced you are.
    20250318_180634.jpg
     
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  23. nunattax
    Joined: Jan 10, 2011
    Posts: 3,214

    nunattax
    Member

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  24. 1Nimrod
    Joined: Dec 11, 2018
    Posts: 633

    1Nimrod
    Member

    Thank you again DDDenny much appreciated.

    Dustin
     
  25. 1Nimrod
    Joined: Dec 11, 2018
    Posts: 633

    1Nimrod
    Member

    Thank you INVISIBLEKID for your help. I think (maybe) what was used on the seams before was bathtub caulking by the way it's peeling off, either that or not paying attention to properly cleaning and preparing and applying the correct type of seam seller compound.

    Dustin Sirrine
     
    Last edited: Mar 19, 2025
  26. 1Nimrod
    Joined: Dec 11, 2018
    Posts: 633

    1Nimrod
    Member

    Thank you K13 for your sound advice and the examples.

    Dustin Sirrine
     
  27. 1Nimrod
    Joined: Dec 11, 2018
    Posts: 633

    1Nimrod
    Member

    nunattax, thank you for your recommendation on the Tiger-Seal.
    I will check it out and also check out all the other types of Seam-Sealants, Caulking materials.
    I really appreciate everyone's help...

    Dustin Sirrine
     
  28. 1Nimrod
    Joined: Dec 11, 2018
    Posts: 633

    1Nimrod
    Member

    Tickety Boo (Norb) let me know how that works out my friend. And thank you as well...

    Dustin Sirrine
     
  29. 1Nimrod
    Joined: Dec 11, 2018
    Posts: 633

    1Nimrod
    Member

    Trailer Trash Too (Russ), Thank You my friend for all your help these many years...

    Dustin Sirrine
    (1Nimrod)
     
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  30. 1Nimrod
    Joined: Dec 11, 2018
    Posts: 633

    1Nimrod
    Member

    I want to make sure it's done correctly. This area on all the 1960-66 C10's the roof drip edge, if not sealed properly the water will get in-between the upper roof panel and the lower roof panel, then rust begins and the roof drip edge will rot out from the inside out.
    The area all around the roof drip edge and the A-pillars on the 1st generation C10's rots/rust out from the inside out and then it get very expensive after the water damage starts. I believe it's one of the worst area's on our C10's (next to the floorboards & inner & outer rocker panels & cab corners) that gets water damage and it gets ignored by not so good body shops that cover it up with filler and a quick paint job just to get the C10 looking good enough and sold to the unexpecting buyer.
    I appreciate everyone's help...
    Thank Y'all very much...

    Dustin Sirrine
    (1Nimrod)
     
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