Flashing Membrane

The Hyload Flashing Membrane is a polymeric, reinforced membrane, incorporating DuPont’s Elvaloy® KEE polymer.
Tech Data PDF

Product Highlights

  1. The Hyload Flashing Membrane is a tough watertight sheet membrane, combined with Hyload Preformed Shapes, provides an excellent barrier to interior water entry in masonry wall construction.
  2. Used as the lineal flashing in conjunction with standard Hyload Cloaks and can be used in built-in flashing applications with masonry, concrete, gypsum, wood, or metal substrates.
  3. Used in residential, commercial and industrial applications. Recommended to adhere all Hyload membrane systems.
  4. Not effected by high alkaline environments typical of masonry construction.
  5. Hyload Systems will not deteriorate or harden with longevity or ultra violet ray
  6. Hyload’s Technical Service Department offers specialized advice through a highly experienced technical staff to aid the construction process.
  7. Hyload provides architectural design service, contractor training and job site assistance.
  8. Lifetime Building Warranty available when total Hyload flashing system is used.

Applications and Packaging


  • Through-Wall Masonry Flashing
  • Door Jam Flashing
  • Window Jam Flashing
  • In conjunction with Hyload Pre-Formed Shapes
  • Building Envelope Flashing


    Standard Widths:

  • 12”, 18”, 24” and 36” x 75’ Rolls

Substrates and Performance Properties

Performance Properties

PropertyTest MethodResults
ElongationASTM D412175%
Tensile StrengthASTM D412650 psi min
Tear StrengthASTM D624280 ppi
Low Temperature FlexibilityASTM D1460̊ Pass
Water AbsorptionASTM D471<0.1%

Limitations and Warranty

  • Hyload Flashing Membrane should not be applied to moist or damp surfaces.
  • Hyload Flashing Membrane should only be applied when both air and surface temperatures are 32°F and rising.
  • Hyload Flashing Membrane cannot be used with coal tar mastic or polysulfide sealant.


Hyload makes available to its customers several high performance product warranties.  Contact Hyload’s Corporate Office directly for details. A standard warranty is 10 years.