Quickseam Formflash Self-Curing Rubber Strip


Quickseam Formflash

QuickSeam FormFlash consists of uncured FormFlash factory laminated to QuickSeam Tape. It is designed to flash inside and outside corners, pipes, penetration pockets and other applications as required by Firestone Specifications and Details.

Comes in 23 cm widths cut to metre lengths or 15.24 metre roll

Please NOTE:- All product variations must be quoted until further notice 

Please contact us via this form


    Quickseam Formflash Self-Curing Rubber Strip

    1. Description

    FormFlash self-curing rubber strip, adaptable to irregular shapes and designed to flash system details (inside and outside corners, pipes, reinforcement patches…) in accordance with Firestone specifications. The FormFlash layer is factory laminated to QuickSeam Tape.

    2. Preparation

    The EPDM geomembrane surfaces must be prepared with QuickPrime Plus, using a QuickScrubber tool. Use of other products is not allowed. Restore the FormFlash product to room temperature prior to use if exposed to temperatures below 15ºC for prolonged periods.

    3. Applications on

    On cloudy days with ambient temperature below 15ºC, the use of a heat gun is recommended to warm the QuickSeam FormFlash and ensure good formability.
    On sunny days, pre-heating of the product is usually not necessary. On sunny days less than 20°C, place FormFlash (prior to application) with the flashing side up to allow QuickSeam to warm to ensure good formability.
    When sunny days are greater than 20°C, place product (prior to application) with release paper side up to prevent QuickSeam FormFlash from gaining too much heat.
    Applied as per the Firestone specifications and details.

    4. Coverage

    In accordance with the length of detail. Pieces must overlap a minimum of 75mm and extend a minimum of 75mm beyond critical

    5. Characteristics

    The Firestone QuickSeam FormFlash is a rubber material with the following properties:

    Quickseam Formflash Self-Curing Rubber Strip

    Technical EPDM Flashing QuickSeam Tape

    • Base EPDM rubber polymers
    • Colour black black
    • Solvents none none
    • Solids(%) 100 100
    • State uncured cured
    • Thickness 1.6mm 0.6mm

    6. Precautions

    Take care when moving, transporting or handling to avoid sources of punctures and physical damage. Isolate waste products, such as petroleum products, greases, oils (mineral and vegetable) and animal fats from Firestone QuickSeam FormFlash. As long as the product is not fully cured, QuickSeam FormFlash has limited chemical and root resistance.

    Store in the original unopened carton at temperatures between 15°C and 25°C. Keep the material out of direct sunlight until ready for application.

    Shelf life is expected to be 12 months when stored in the above-mentioned conditions. Verify the production date on each roll.

    Shelf life will be reduced if exposed to higher temperatures.


    Quickseam Formflash Self-Curing Rubber Strip allows you to finish various shapes for flashing your protrusions.



    Please NOTE:- All product variations must be quoted until further notice 

    Please contact us via this form


      Above information taken from the information sheet below

      Technical Sheet QuickSeam FormFlash



      Additional information

      Dimensions N/A
      QuickSeam FormFlash Width 23

      23 cm

      QuickSeam Roll Lineal Length

      23cm x 15.24 lineal metre, Cost per Lineal metre


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