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Waterproof new tonneau

Discussion in '3rd Gen. Tacomas (2016+)' started by Gingabread, Feb 2, 2021.

  1. Feb 2, 2021 at 9:53 PM
    #1
    Gingabread

    Gingabread [OP] Member

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    Hello all,

    I am new to the forums, but has a couple buddies refer me this way.

    I am looking for tips on how to waterproof an mx4 backflip tonneau for a 2020 CC short bed.

    Any tips, or links to other threads would be greatly appreciated.

    thanks
     
  2. Feb 3, 2021 at 6:09 AM
    #2
    Fredk

    Fredk Well-Known Member

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    You will never waterproof it. Mine only leaks at the tailgate, there is 1/4" gap on each side of it.
     
    The hammer and Chew like this.
  3. Feb 3, 2021 at 6:13 AM
    #3
    Gingabread

    Gingabread [OP] Member

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    Thanks for the reply. That doesn’t sound bad at all. Maybe a piece of rubber insulation could help.
     
  4. Feb 4, 2021 at 6:25 AM
    #4
    Fredk

    Fredk Well-Known Member

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    It's worth a try.
     
  5. Feb 4, 2021 at 6:27 AM
    #5
    Larry Dangerfield

    Larry Dangerfield When in doubt, throttle out

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    https://smile.amazon.com/dp/B00IPQW...colid=QLWKXVPKN54I&psc=1&ref_=lv_ov_lig_dp_it
     
  6. Feb 4, 2021 at 6:39 AM
    #6
    The hammer

    The hammer Who’s the Wrench?

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    You might be better off with a camper top if you need 100% water proof bed. My tri-fold leaks by the tailgate also.
    And yes I have tried to make it 100% water proof.
     
  7. Feb 4, 2021 at 10:06 AM
    #7
    Gingabread

    Gingabread [OP] Member

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    Thanks for the tips.
     
  8. Feb 4, 2021 at 10:13 AM
    #8
    Taco_mike73

    Taco_mike73 Well-Known Member

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    I used that on my tailgate. It does help some but I still have a few drops of water in the corners there after a hard rain or car wash. It's never much and so far none of my stuff has gotten wet. The bed has drain holes close by and the bed mat keeps everything above that tiny bit of water.
     
    Larry Dangerfield likes this.
  9. Feb 4, 2021 at 10:40 AM
    #9
    Gingabread

    Gingabread [OP] Member

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    That’s good to know. Not looking for completely water proof, but it would be comforting knowing that my cargo isn’t getting soaked.

    also, is the mx4 backflip daily secure? If not, any tips on beefing that up?
     
  10. Feb 4, 2021 at 10:50 AM
    #10
    JAMC

    JAMC Well-Known Member

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  11. Feb 4, 2021 at 10:51 AM
    #11
    BasicPainter

    BasicPainter Member

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    What Fredk said. The tailgate isn't waterproof. Truck beds aren't designed to be waterproof. That's why they're separate from the cab. You may get better result with a cap. Caps include a foam weather seal on 3 sides and the rear window closes behind the gate like flashing. But even the with cap, since the tailgate has gaps on both sides, it can never be fully waterproof.
     
    Taco_mike73 likes this.
  12. Feb 4, 2021 at 10:52 AM
    #12
    Taco_mike73

    Taco_mike73 Well-Known Member

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    I don't know anything specific to mx4 backflip. I have Lomax hard tri fold. It latches to the bed rails and opens from inside. You have to open the tailgate to release it, lock the tailgate and that should keep out all but the most dishonest ones with crowbars and the like.
     
  13. Feb 4, 2021 at 11:02 AM
    #13
    JAMC

    JAMC Well-Known Member

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