Lift Hole Patch

External seals for precast structure lift holes
High Performance Seals for Sealing Lift Holes in Concrete Pipe

Lift Hole Patches are high performance membranes designed to cover and seal lift holes in a variety of precast concrete structures. The patch is composed of three cross-laminated layers and is reinforced with tough, puncture-resistant woven polypropylene. The outer layer is an impervious polyethylene, resistant to most acids and alkalines.

Lift Hole Patches are available in easy to apply 9” x 9” squares with a peelable protective paper for faster application without the waste or extra tools.

Features & Benefits
  • Aggresive tack & initial adhesion to all concrete surfaces
  • Continuous adhesion @ ground temperatures
  • Puncture & tear resistant
  • Infiltration & exfiltration proof
  • Resistant to drying, oxidation & hardening
  • Primer not typically needed
  • Economical & effective
MarMac Lift Hole Patches meet or exceed the material requirements of ASTM C877 and ASTM C990.
MIN MAX
RUBBERIZED MASTIC
Ash-inert matter 8% 15%
Volatiles 0.1% 2.0%
Softening temp 175°F
Specific gravity 0.95 1.05
Penetration 60 dmm 90 dmm
Flow 10 mm 10 mm
POLYETHYLENE BACKING
Tensile strength 4000 psi
Elongation at break 100%
Tear resistance 1500 psi
Water absorption 0.01%
The surface of the structure to be sealed should be clean of dirt and debris. The surface should be as dry as possible in field conditions. Lift Hole Patch shall be placed against the structure, mastic side to the structure, covering the lift hole to be sealed. The protective release film shall be removed from the edge of the wrap and be applied to the structure wall centering the lift hole. Hand press the patch to the structure wall to ensure a permanent seal.

AVAILABILITY

9” x 9” square patch
Qty 80 per box

APPLICATIONS

Box Culverts
Reinforced Concrete Pipe Manholes
Detention & Burial Vaults All structures w/ lift holes

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*All statements and technical information are based on tests and/or data which MarMac Manufacturing deems reliable, however, MarMac does not warrant or guarantee the accuracy or completeness of such information. Please read further manufacturer liability and warranty information.