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A composite sheet type waterproofing membrane consisting of a high density cross laminated polyethylene membrane bonded to highly adhesive SBS modified bitumen (rubberized asphalt) with a removable silicone coated kraft paper release liner. When necessary Aquaflash 500 membrane can be applied as part of a system which uses both an Aquaflash mastic and primer.

Features and Benefits:

A composite flashing which is:

  • Self-sealing
  • Excellent puncture resistance
  • Self-healing since the adhesive system will elongate and recover if somewhat damaged
  • High temperature stability
  • Termination bar recommended when surface mounted

Contact a FIBERWEB representative for further installation information.

Model Specifications

Special Requirements:
All material specified shall be delivered to the jobsite in approved manufacturers sealed conatiners bearing manufaturers name and material identification.

All masonry and other surfaces receiving flashings should be reasonably smooth, free from loose material and completely dry. There shall be no slopes which would prevent the free flow of water to the exterior surface of the wall. All work shall be executed in conformance with accepted trade practices.


Flashings shall be Aquaflash 500 Flashing consisting of high density cross laminated polyethylene bonded to rubberized asphalt for a total thickness of 40 mils.


  • Thru-Wall Flashing
  • Concealed Flashing
  • Foundation Sill Flashing . Base Flashing
  • Spandrel Flashing
  • Head and Sill Flashing . Parapet Flashing

Application Instructions:
Aquaflash 500 should be cut into manageable lengths of approximately 8 to 10 feet. Remove the release liner. Apply Aquaflash 500 membrane starting from the lowest point and work upwards.Once the membrane is in place, use a steel hand roller to secure the flashing firmly in place. All side laps should be a minimum of 2 1/2". Either trim edges or lay the membrane 1/2" back from face of masonry. Inside and outside corners must be covered with two layers of membrane and sealed with mastic. Once installed, no maintenance is required.

Note: Not to be used for exposed flashing.
Not to be applied below 25°F Not to be applied below 40°F without a primer
Not to be used with oil based, wax based or polysulfide sealants or creosote.
Rubberized asphalt flashings not to be exposed for more than 3-4 weeks.

Temperature not to exceed 120° Fahrenheit or go below 25° Fahrenheit.
Protect products from inclement weather or excessive heat.
Sizes: Standard Widths: 12", 16", 18" 24",36" Standard Length: 50 lineal feet.

Aquaflash Mastic:
A rubberized asphalt based adhesive to be used in conjunction with the Aquaflash 500 membrane to seal all horizontal terminations, seams, laps, protrusions and any accidental cuts or punctures. Temperature application is to be 25° F or above. No solvent based mastics are to be used without the approval of the manufacturer.

Aquaflash Emulsion Primer:
A solvent free, odorless primer specifically formulated to be used in conjunction with Aquaflash 500 membrane to provide good initial adhesion and excellent permanent adhesion.


Aquaflash Emulsion Primer is used to prime all surfaces where Aquaflash 500 membrane is applied such as concrete, masonry and wood. The Aquaflash Emulsion Primer is to be used in ambient and substrate temperatures above 40°F We). This primer can be applied to damp surfaces including green concrete.

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