Self Adhered Membrane

The Hyload S/A Membrane is a composite membrane. The top layer is a 25 mil polymeric, reinforced self adhering membrane incorporating DuPont’s Elvaloy® KEE polymer. The bottom layer is 15 mils of SBS rubberized asphalt. The rubberized asphalt layer is covered with a release paper, which is discarded during installation.
At one edge of the SA with Drip Edge Membrane, the rubberized asphalt is held back 1-1⁄2”
Tech Data
w/Drip Tech Data

Product Highlights

  1. Recommended to adhere all Hyload membrane systems
  2. Not effected by high alkaline environments typical of masonry construction
  3. Hyload Systems will not deteriorate or harden with longevity or ultra violet ray exposure
  4. Hyload’s Technical Service Department offers specialized advice through a highly experienced technical staff to aid the construction process.
  5. Hyload provides architectural design service, contractor training and job site assistance
  6. 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”
  • Special widths available upon request.


Substrates and Performance Properties

  • ALL Hyload Membranes.
  • Wood
  • Metal
  • Concrete, Block, and Masonry
  • Stainless Steel

Performance Properties

Elongation ASTM D412 225%
Tensile Strength ASTM D412 875 lbs/in2
Tear Strength ASTM D624 270 ppi
Low Temperature Flexibility ASTM D146 -25 Pass
Low Temperature Flexibility
With Drip
ASTM D146 -12 Pass
Water Absorption ASTM D471 Less than 0.1%

Limitations and Warranty

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


Hyload makes available to its customers several high performance warranties for our self adhering membrane and other products.  Contact Hyload’s Corporate Office directly for details. A standard warranty is 10 years.