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Butyl tape windshield primer?

Discussion in 'The Hokey Ass Message Board' started by gotwood, Nov 11, 2010.

  1. gotwood
    Joined: Apr 6, 2007
    Posts: 264

    gotwood
    Member
    from NYC

    Ok it has been a while since I installed a windshield. I picked up the 3M Butyl tape and tried to use the 3M 08643 I had on a shelf for years. It was dried up. I went to get some more and apparently they no longer make it?? They only carry a primer made for urethane windshield setting up.

    I asked if it could be used with the butyl tape and nobody seamed sure?? I called a buddy who has a shop and said to install without the primer on the glass as the new stuff might not set right?? My windshield pinch weld is just redone from bare metal to epoxy primer.

    Is it necessary to use the primer on the glass???? I am thinking there is no UV issues as it is covered with the chrome moldings and the adhesion would only be as good as the grip between the primer and the glass? I think the tape butyl would actually create a better grip to the glass???


    IDEAS???? What is everybody using?
     
  2. hotrod mike
    Joined: Nov 21, 2006
    Posts: 1,729

    hotrod mike
    Member

    Back when I was in the glass business (70's-80's), we just cleaned the glass and ran the butyl tape around it. There was an aftermarket primer we brushed on the pinchweld to help the tape stick better. Sommer and Maca was one supplier. C.L. Lawrence was another. Most glass shops probably deal with them. Good luck.
     
  3. Nicholson
    Joined: Aug 9, 2006
    Posts: 169

    Nicholson

    The part number for the CR Laurence butyl primer is CRL1106. It's for the pinch weld and the glass.
     
  4. gotwood
    Joined: Apr 6, 2007
    Posts: 264

    gotwood
    Member
    from NYC

    Thanks and Nicholson nice work there!
     

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