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Roofing: “Prefinished” Step Flashing

dwmayer | Posted in Construction Techniques on May 20, 2003 01:59am

For a reroofing project, the bid specs say “prefinished step flashing” as opposed to unpainted galvanzied and then painted over. It’s supposed to match the drip edge and gable end metal.

There don’t seem to be any suppliers in Colorado, but I see it specified in bid specs and contract information I’ve found on the web.

Help! The job is starting soon.

Thanks,

Dave

 

 

 

 

 

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Replies

  1. Piffin | May 20, 2003 02:59am | #1

    I've always cut my own step flashings. You can get prefinished in rolls from the steel roofing retailers out there.

    .

    Excellence is its own reward!

  2. timkline | May 20, 2003 04:27am | #2

    If your dripedge and gable end metal are aluminum, then can't your flashings be aluminum coil stock to match ?

    carpenter in transition

  3. xMikeSmith | May 20, 2003 06:10am | #3

    we always use prefinished coil stock to make our flashings.. in our case we use aluminum coil stock..

    we haven't used mill finish aluminum in about 15 years, it's lighter guage than coil stock and doesn't look as good

     you can also get painted galv.  and painted steel

    Mike Smith   Rhode Island : Design / Build / Repair / Restore

  4. roofdoc | May 20, 2003 03:24pm | #4

    I think the specs are refering to step flashing not counterflashing which most of the old timers also call flashing cards.It is my understanding the last  flashing is  the counterflashing.

    As not finding them every supplier I have ever done bussinees with has had them eirther in mill finnish or brown/black.

  5. User avater
    BossHog | May 20, 2003 03:30pm | #5

    I'm no expert at roofing, but...........

    Who cares what color step flashing is? If it's installed correctly, it's under the shingles and siding and out of sight.

    Or am I missing something?

    Get busy living, or get busy dying. [The Shawshank Redemption]

    1. dwmayer | May 20, 2003 05:45pm | #6

      In this case, there was no step flashing orginally installed on the older house and we have to cut the siding up 1.5 to 2 inches and the step flashing will show.

      There are other areas around chimmneys and skylights that may show as well

      Normal option, you may have seen it, is to paint any exposed step flashing, but it always fades and looks "splotchy" after a few years.

      Dave

    2. SHazlett | May 20, 2003 07:19pm | #7

      Actually,boss---you are missing something.

       If you look at a quality built older home you will see that the carpenters cared enough about the longevity of the project to hold the clapboards up off the roof maybe 1/2"--3/4". Among other things it prevents the end grain of the claboards from wicking up moisture from wet roof surfaces------besides GREATLY simplifying future  roofing projects.Mill finish step flashing will be highly visible and crappy looking in that situation. Unfortuneately today----vinyl siders typically just drop the J channel right on the roof and nail it to the wall----such subtleties are ,it seems, beyond them. but wadda ya expect from vinyl siders?

      I used to bend all my step flashing out of pre finished coil stock-----what a waste of time.Now we buy bundles of pre-finished,pre-bent step flashing----100 per bundle.Black,brown,white are the common in stock colors. 2x3x7, and 3x3x8 are the common sizes.

      1. User avater
        BossHog | May 20, 2003 07:39pm | #8

        Well, I've never worked on a house with anything BUT vinyl siding. Never thought about holding the siding up off the roof if you used wood.

        But.................That's why I asked.Get out of my bed, and don't come back until your dick is bigger. [Madonna]

    3. xMikeSmith | May 21, 2003 12:36am | #9

      really ?Mike Smith   Rhode Island : Design / Build / Repair / Restore

      1. User avater
        BossHog | May 21, 2003 04:27am | #10

        Yup.

        Really.Crime wouldn't pay if the government ran it.

      2. xMikeSmith | May 21, 2003 05:09am | #11

        boss, here's two samples of colored flashing.. this is from  brown coil stock.. the first is a breakflash with a double crimp to let the spring of the aluminum hold it down on the top course...

        the  2d is an example of what stephen was talking about... holding the cedar clapboards up 3/4 to keep them out of the waterMike Smith   Rhode Island : Design / Build / Repair / Restore

        1. User avater
          BossHog | May 21, 2003 01:58pm | #12

          Thanks for the pics, Mike. Always interesting what you can learn here.

          Even from some east coast geek like you....................(-:If I were not a physicist, I would probably be a musician. I often think in music. I live my daydreams in music. I see my life in terms of music. [Albert Einstein]

          1. xMikeSmith | May 21, 2003 02:11pm | #13

            boss... i may like ar-kansas better......Mike Smith   Rhode Island : Design / Build / Repair / Restore

          2. User avater
            BossHog | May 21, 2003 02:28pm | #14

            Heck, at least I remembered where you were from this time.

            Gotta give me credit for that.If you want anything said, ask a man. If you want something done, ask a woman. [Margaret Thatcher]

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