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Product Description
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WeatherMax Pro Flash™ is a high-performance peel & stick flashing tape that has been designed to work in wet weather conditions. In fact, this product has been test and will adhere to OSB even under water.

Weather-Bloc Systems experience in job site realities developed this tape for the contractors to continue working in less than ideal weather conditions and still have the ability to install a flashing tape that seals and protects. Based on new hybrid adhesive technology called Micro-Grab, this tape performs when other fail.

WeatherMax Pro Flash meets and exceeds ASTM E-2112 for sealing around windows and doors. Manufactured with a high strength, puncture resistant facer, this tapes performs as a great air and moisture barrier.

As part of the building envelope system, WeatherMax Pro Flash can help aid in the reduction of water damage, air infiltration and improve the energy efficiency of the structure.
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Basic Uses
This waterproof tape can be used on new or existing construction for fenestration products such as patio doors, entrance doors, windows and skylights as a flashing-waterproof material. Can be used as a patch material on house wrap.

How to Stop Window and Door Leaks

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One of the best methods of stopping window and doors from leaking is the proper installation of WeatherMax Pro Flashing Tape. It is recommended to cut back the house wrap from the window opening to allow flashing tape to adhere to the OSB and stop lateral water infiltration from behind the house wrap. Water always has the possibility of getting behind the house wrap and creating leaks at the openings. Most flashing tapes have a difficult time adhering to OSB, but no problem for WeatherMax.
  • For Residential or Commercial Use
  • No Primer Required
  • Self-adhering, Peel and Stick
  • Easy Start™ Edge For Fast Installation
  • Air and Moisture Barrier
  • Helps Stop Energy Loss
  • Twice as Strong as Other Tapes
  • Seals around nails
  • Stays Elastic, Does Not Oxidize or Dry Out
  • Conforms to Surfaces Irregularities
  • No Drool or Staining
  • Stick to OSB, Vinyl, Fiberglass Frames, Wood and Others
  • No Heated Storage Required
  • Workable for Precise Placement
  • Thin Design for Better Formability
  • Compatible with All Building Materials*
  • Helps Stop Mold and Mildew
  • Available in 4 Widths
  • No VOCs and Environmentally Friendly
  • Micro-Grab Adhesive Technology
  • 5 year Shelf Life
  • Limited Lifetime Warranty
  • Made in USA
Available Sizes


4" x 15'

6" x 15'

4" x 75'

6" x 75'

9" x 75'

12" x 75'






















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.