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Product Description
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Counter Flash Guard™ is self-adhering adjustable counter flashing. Composed of hi-density ridged polyethylene polymers, each flashing sheet can be quickly installed due to a series of live, hinges that can conformed to almost any size or shape window and/or door profile.

Combined with peel and stick MicroGrab™ Adhesive Technology, this high performance membrane will adhere
in extreme cold and wet weather and create a long last air and moisture barrier.

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Basic Uses
Anywhere unexposed counter flashing is needed to protect a opening or penetration.

How to Stop Window and Door Leaks

The proper use and correct installation of flashings in building structure may be the most important element in having a successful building project. Flashing are a construction component used to seal and protect penetrations or openings in a building’s protective envelope from water intrusion. Water is the one element that poses the greatest threat to a building. Billions of dollar are spent every year on repair and lawsuits due to water infiltrating a building.

After roofing leaks, window and door account for the majority of leaks. Proper sealing and flashing the top of the window is perhaps the most critical. Many window manufactures have predesigned flashings, flanges and drip caps. Weather-Bloc Systems developed the Counter Flash guard for window and doors that need a proper flashing system. Easy to install and designed
to resist the three mechanisms of water penetration: gravity, surface tension, and wind pressure.
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Counter Flash Guard can be used on other non-exposed area of a building to keep out water. The flexible material is easy to work with in roll form and allows for the bottom to float giving it a true advantage in many construction details.

  • In Roll Form for Fast, Easy Installation.
  • Super Aggressive Adhesive on the Leading Edge
  • Self-adhering, Peel and Stick
  • Easy Start™ Edge For Fast Installation
  • Conforms to Surfaces Irregularities
  • No Drool or Staining
  • Workable for Precise Placement
  • Thin Design for Better Formability
  • Helps Stop Mold and Mildew
  • No Heated Storage Required
  • No VOCs and Environmentally Friendly
  • Micro-Grab Adhesive Technology
  • 5 year Shelf Life
  • Limited Lifetime Warranty
  • Made in USA
Available Sizes


4.5" x 25'

4.5" x 100'










Customizable Sizes Available

We believe that Xtreme Weather Flashing tape is the best on the market. We believe it is better than all others flashing tapes including 3M 8067, DuPont Tyvek Tape, Nashua Select, Protecto Super Stick, Grace Vycor Plus, Protecto Wrap Bt-25XI, Henkel OSI TeQ Flash, Windowwrap PSX-20, MFM WindowWrap PowerBond, Henry Blueskin WB, barricade Ulti-Flash, Mpn 45804, Nashua Optiflash, Polyguard, York RESHS09, Shadowlastic, Baricade, Aquaseal Hyband, Adchem DrainFlash and Typar Flashing.