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Community and Q&A

Cold-Tolerant Liquid-Applied Flashing

jadziedzic | Posted in Energy Efficiency and Durability on

In our current 30-40 degree (F) temperatures in New Hampshire (CZ5) applying ZIP liquid flashing is like spreading molasses straight out of the freezer; in other words, it can’t be done.  Are there other liquid flashing materials that would be better suited for application at this time of year?  The goal is to flash the entire window opening with liquid flashing prior to window installation (like some of the ZIP-sponsored videos on YouTube).  Thanks!

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  1. thrifttrust | | #1

    They are so special, I don't think there is any replacement for sealants employing Silyl Terminated Polyether Technology, like Zip Liquid Flash. I used similar products last winter for the same purposes as you. The key is to keep the material warm until ready to use and working fast. I'd keep the sausages at home then put them on my truck dashboard with the defroster on to rewarm. I wrapped the sausage gun with a towel for insulation. A unique feature of these sealants is that they can be used at any temperature without compromising their properties. While they cure extremely slowly at low temps the cure speeds when the temp rises.

  2. Patrick_OSullivan | | #2

    1. If you're not sitting the tubes in an igloo-type cooler filled with like ~100 F water, you should be.
    2. I would consider tapes instead of liquid flash for window prep. There's nothing wrong with liquid flash, per se, but I tend to only use it when it can't hold up a serialized installation process. A window is a perfect example of where you want to cut an RO, flash, install a window, and then move to the next. Sometimes cutting all the ROs, flashing all the ROs, and then installing all the windows is not an option to keep the house weathertight over a couple days.
    3. If you're doing a lot of liquid flash and/or other sealant application, invest in a battery powered caulk gun. I have the Makita. Milwaukee makes them as well. They are a game changer.

    1. Expert Member
      Akos | | #3

      +1 on "would consider tapes"

      Acrylic or butyl based adhesive tapes are much easier to install in cold weather.

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