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Technical What seam sealer to use on floorboards?

Discussion in 'The Hokey Ass Message Board' started by evintho, Feb 8, 2020.

  1. evintho
    Joined: May 28, 2007
    Posts: 2,363

    evintho
    Member

    I'm replacing the rusty floorboards in my '54 Customline and I'm interested in knowing what everyone uses for seam sealer. I want to cover the weld seams top and bottom. I read in another post that some guys are using Liquid Nails! Any suggestions?

    [​IMG]
     
  2. Alaska Jim
    Joined: Dec 1, 2012
    Posts: 319

    Alaska Jim
    Member

    3m makes a great seam sealer that is paintable. I would not use liquid nails
     
  3. I use the sealer my local body shop supplier has.
     
  4. oldiron 440
    Joined: Dec 12, 2018
    Posts: 3,301

    oldiron 440
    Member

    I use the 3M two part seam sealer, very tough.
     

  5. Torana68
    Joined: Jan 28, 2008
    Posts: 1,415

    Torana68
    ALLIANCE MEMBER
    from Australia

    Go to a body shop supplier and get the stuff designed for the job. Wurth , 3M Etc , some of them are very reasonably priced.
     
  6. southcross2631
    Joined: Jan 20, 2013
    Posts: 4,413

    southcross2631
    Member

    I use 3M . I know that it works and it lasts.
     
  7. Check out the Eastwood Company.
     
  8. I use SEM 2 part. But I would think any 2 part would be fine.
     
  9. A different approach...........I didn't use a seam sealer as such on the floorboards. As I went along and finished areas with the patch panels, I applied por-15 Por Patch to the seams, and then a coat of Por-15 on the entire panel/area. Caution there........por-15 requires a tooth on the metal surfaces for proper adhesion. Sandblasting is the best way to achieve that. If you try to apply it so the factory surface/finish of the sheetmetal, it'll peel off.
    When doing outside seams that will get finish paint, primarily the raingutters/roof driprails, I'd strongly recommend 3M panel bond. So much easier to get a nice finish/contour, and has the added advantages of being easily sandable when set up. Not unlike body filler for finish sanding and blending. It also has a rust inhibitor. This was highly recommended to me by the local 3M rep, and I'm so glad I took his advise. The tough part to swallow there was the $70ish for the special caulking gun.
    The question I always had was when to apply the seam sealer if I was going that route.....before of after epoxy primer. That was one reason I decided to do the por-15 route, besides, my entire car was por-15'd on inner surfaces and underside.
     
    Last edited: Feb 9, 2020
  10. saltflats
    Joined: Aug 14, 2007
    Posts: 12,594

    saltflats
    Member
    from Missouri

    Read the label on the seam sealers, some are not for use inside the car.
     

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