HydroFlash® LA

​HydroFlash® LA is designed for exterior flashing of rough openings, transitions, and seams as part of a high performing air and water management system. Liquid Applied flashing is appropriate for the filling of imperfections, penetrations, or sealing of geometrically challenging areas.

  • ​Use for challenging details in exterior insulation applications
  • Use for the sealing of geometrically challenging areas
  • Approved with all Benjamin Obdyke housewraps
  • Ideal application for air sealing details
  • Use to create monolithic sill flashing & prevent leaks
  • Cure time is only 6 hours with 20-40 mil thickness


20 oz. sausage/12 per carton

10 oz. carton/24 per carton

Typical Coverage

8-10 sq ft. per sausage

3-5 sq ft. per cartridge

Cured Thickness

20-40 mils

Compound Technology


Cure Time

20-40 mils = 6 hours

Install Temperature

25° – 100°F


180 days

Tack Free Time

2-3 hours

Vapor Permeance

3-6 perms (20-40 wet mils)


15 year product warranty


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Liquid-Applied, UV, and General Purpose Flashing: What to Use Where

For each project, installers face a number of material decisions for how best to protect the building envelope. When it comes to flashing options, which solutions are best suited to each scenario?

Here’s a short guide.