Wall Opening Weeps

Wall Opening Weeps™

WOW 9095

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Wall Opening Weeps
  • Wall Opening Weeps
  • Wall Opening Weeps
  • Wall Opening Weeps
  • Wall Opening Weeps
  • Wall Opening Weeps

Wall Opening Weeps Highlights

Wall Opening WeepsTM are a versatile weep for use in thin veneer, full brick and full stone walls as well as above window and door openings.   They put multiple, predictable weep holes where they belong, at the lowest point!


  • Versatile weeps for thin veneers, full brick and full stone walls
  • They form the bottom edge of the scratch coat and the bottom edge of the thin-set mortar over wall opening (windows and doors)
  • They maintain vertical tunnels/channels up into thin veneer walls
  • Translucent in color to blend with mortar

Weeps Incidental Moisture behind

  • Stucco
  • Thin Stone & Thin Brick
  • Brick
  • Natural Stone
  • Single-Wythe Masonry

Wall Opening Weeps Installation

  • Install Wall Opening WeepsTM  10" to 12" on center on flashings
  • Lightly score and crack off Wall Opening Weeps™ while mortar is still plastic
  • Because WOW weeps are used in a variety of wall details, we suggest viewing our installation animations for a specific detail listed below

*The installation animation to the right shows thin veneer stone installed run to grade. Wall Opening Weeps™ can be used in many other applications*

Additional Installation Animations

Wall Opening Weeps Ordering/Shipping

Contact MTI at 1-800-879-3348 for specific cost to your destination.

Wall Opening Weeps Specifications

A 0.024" (0.6 mm) thick high-impact polystyrene strip formed with 3/16" (4.8 mm) deep corrugations, bent into L-shape, 9" (229 mm) Leg - 2.25" (57 mm ) wide and 5" (127 mm) leg - 2.5" (57mm) wide. This system is installed behind thin veneer scratch coat and metal lath to create a system of tunnels and channels down behind and out of thin veneers at tops of wall openings (windows, doors, etc.), this weep system must be used in conjunction with MTI Sure Cavity or MTI Gravity Cavity.

Product Number WOW 9095
Units per Box 100
Boxes per Pallet 70
Units per Pallet 7000
Pallet Size 48" x 48" x 40"