About LIBERTY™ Flashing Cement

Seal a variety of roof materials with LIBERTY Premium Flashing Cement. This bonding agent works with shingles, metal, built-up asphalt, SBS modified bitumen membrane end laps and perimeter edges, metal-edge flashing, gutter seams, and air conditioning ducts. This product provides bonding strength and flexibility while being easily applied with a 1/4” notched trowel or squeegee.

Installation based on applicator type:

  • Membrane flashing: Apply cement at 1 to 2 gallons per square (.4 – .8 L/m2) to substrate only.
  • Coursing: Apply cement to surface and install glass, polyester fabric, or asphalt-coated cotton fabric into cement. Repeat as wanted. Finish with a final layer of cement.
  • Metal: Prime metal. Set metal flanges into a full bead of 1/8” (3mm) thickness. Apply cement between joints and apply pressure so that a bead of cement is visible at joint edge.
  • Sealing/repairs: Apply cement at a 1/8 inch (3 mm) to 1/4 inch (6 mm) thickness, working the cement into the opening or crack and spreading beyond repair area approximately 2” – 4” (51 – 102 mm).

A cold-applied bonding agent for a wide variety of roofing components

LIBERTY Flashing Cement is ideal for a wide variety of sealing, bonding, and repairing applications in areas where temperature-related expansion and contraction occurs.

LIBERTY™ Installation — Step-by-step*

*See application instructions for complete details.

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