door insulation

Discussion in '40- & 55-Series Tech' started by allan man, Feb 15, 2009.

  1. allan man

    allan man

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    Hi everyone,i came across some doors on craigslist...so i made some half doors.......Now before i close it up and weld,i wanted to see your thoughts on insulation.....or packing the inside with that stuff you can get at home depot (Dont know what its called) its in a spray can....when sprayed it starts expanding.....and when it dry's its like hard foam.....im not to concerned about insulation weather "wise" its just when you close the door its sounds really "hollow" :confused:
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  2. bphilips09

    bphilips09

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    I'm at the same step in the process you are. Does anyone know what this stuff is called?
     
  3. allan man

    allan man

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  4. bikersmurf

    bikersmurf

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    "Spray foam"

    Haven't done it. It would deaden sound and keep moisture out. I have used Similar foams in many different applications including Prosthetics.

    Make sure to use the stuff that won't warp door and window frames... and leave somewhere for it to expand to.

    Mask off surrounding areas (it's a bugger if you get it on finished surfaces and your hands).
    Spray it in in multiple passes to allow it to expand without warping.
    Then allow it to fully expand and cure then trim off the excess with an OLFA knife (utility).
     
  5. KLF

    KLF Frame waxer SILVER Star

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    NO NO NO NO NO!!!

    Do not put "Great Stuff" in your doors! Or anywhere else on your truck for that matter! It holds moisture, is slightly corrosive, and will rot out your body panels faster than driving it in a salt mine.

    Unless you want the truck to rust away, then by all means go for it.
     
  6. antFJ

    antFJ

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    put some actual foam in there that you can remove if you want to.. don't do the spray stuff from home depot, you'll regret it
     
  7. SouthBostonFJ40

    SouthBostonFJ40 SILVER Star

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    BTW, that is a sweet 40! Is that a BMW blue? Looks kind of like the color on the older M3's.
     
  8. allan man

    allan man

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    VOODOO BLUE i believe what its called factory paint of a 2007 FJ CRUISER.
     
  9. 77HesterSue

    77HesterSue SILVER Star

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    This foam looks different than the DIY insulation foam from Home Depot or elsewhere. The "handi foam" for commercial vehicles on the link you provided sounds like it would be a good fit for the half door application you propose. Let us know how it works if you use it! Pics too

    Also, it is a nice looking cruiser!
     
  10. Von Chaos

    Von Chaos

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    I would use dynamat it used on cars and has great results plus if you ever have problems w\ your handles good luck getting to them w\ all that foam.. Great looking fj!
     
  11. Beast II

    Beast II

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    Foam & Dynamat

    I did the entire inside of my doors with Dynamat Extreme. I then used this stuff - GREAT STUFF? - and filled in the cracks etc. I made sure to leave a couple of areas at the bottom of the doors open for water to escape though. The doors now close solid (like a luxury car) and it has eliminated some of the noise.
     
  12. malcb

    malcb

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    Dynamat - good idea, foam stuff I am afraid is a bad idea from what I have seen in the past, perhaps how you put it in works and won't cause any rot but I use that stuff on the house only.

    Keep an eye on it and get it out if you see any rust or even damp in there.
     
  13. Beast II

    Beast II

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    Yea, I'm rethinking the foam idea. I'll pull a door panel off and see what it looks like.
     
  14. jkl72-40

    jkl72-40

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    foam/water idea

    what about running a straw or something tube like inside the door to a drain hole so that it would breath and let out water? before/during the foaming then before its covered pull/slip it out.:meh:
     
  15. youmustbecrazy

    youmustbecrazy

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    If you do decide to use foam make sure you use the low expansion type. Great Stuff and similar will push out the panels on your doors as it expands. I would use something else.
     
  16. Shawn Russell

    Shawn Russell

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    I filled my half doors with a expanding foam years ago... Don't remember what kind. When empty, the doors would rattle like crazy. With it in there, no rattles... It has not caused me any problems so far. I do live in a dry climate.

    Shawn
     
  17. allan man

    allan man

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    And now time for some painting......


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