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Technology · W. L. Gore & Associates

GORE-TEX ePE

Gore's PFC-free-membrane platform, introduced to replace expanded PTFE in much of its consumer range. Thinner and lighter membranes are typical, with the same garment-level certification approach.

Specifications last verified 2026-09-01Independent documentation

Manufacturer specification

Published figures only — nothing estimated

Owner
W. L. Gore & Associates
Membrane type
Expanded polyethylene membrane
Construction options
2L, 2.5L, 3L
Waterproof rating
Not publicly specified by manufacturer
Breathability rating
Not publicly specified by manufacturer
Air permeability
Not publicly specified by manufacturer
Typical price segment
Varies by garment.
Weight characteristics
Varies by face fabric and construction rather than by membrane alone.
Durability characteristics
Durability is driven mainly by face-fabric denier and construction.
DWR requirements
Face fabrics carry a durable water repellent finish. Repellency wears off with use and needs reproofing; the membrane itself is unaffected.
PFAS / PFC information
Marketed as being built without PFCs of environmental concern at the membrane. Repellent finishes and other components are declared per garment.

WaterproofJacket.com assessment

Our editorial analysis, not a manufacturer claim

Main advantages

  • Membrane built without PFCs of environmental concern
  • Lower membrane weight
  • Certified garment construction

Main disadvantages

  • Shorter field history than expanded PTFE laminates
  • No published numeric ratings for cross-fabric comparison

Best uses

  • Everyday and hiking shells
  • Buyers prioritising chemistry

Poor uses

  • Readers who want published lab figures to compare

Care instructions

  • Wash with a technical cleaner, not standard detergent or fabric softener.
  • Reproof the face fabric when water stops beading.
  • Tumble dry warm or press with a cool iron under a cloth if the care label allows, to reactivate the finish.

Sources

Official documentation and standards we relied on