Innovation In Masonry Construction

Flashing Mastic


WIRE-BOND® Flashing Mastic is an asphalt base, trowel grade product that dries to a tough flexible waterproof and corrosive proof coating which gives excellent performance over a wide range of temperatures and conditions.

WIRE-BOND® Flashing Mastic is a recommended mastic to waterproof all laps and joints in copper based laminated flashing.

  • Complies with all requirements of Federal Specifications SS-C-153 Type I
  • Clings tightly to wood, slate, metal, asbestos felt, asphalt, concrete and masonry
  • Great idea for general roof repair including shingle leaks
  • Forms a strong and flexible rubbery surface to provide years of waterproofing


  • 5 gallon pails
  • 30 oz tubes packaged 20 per case
More Products In This Category

In category:

Flashing Products

Other products in category:

Aquaflash 500 Copper Aquaflash Copper Fabric Flashing Drip Edge Flashing Termination Bar (4200)
Flashing Mastic
EPDM Thru-Wall Flashing PVC Termination Bar Drip Edge Corners PVC Flashing Rhino Bond Flashing BOND -N- FLASH EPDM Primer MAS -N- FLASH Copper Seal Flashing Corners & End Dams (Stainless Steel) Termination Bar (4210) BOND -N- FLASH SA Bond -N- Flash Mastic Corners & End Dams (Copper)

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