231 Flashing Cement

231 Flashing Cement

231 Flashing Cement

A general purpose formulation for use as a cold-applied flashing cement in many types of asphalt roof membranes. Its heavy “trowel-grade” consistency makes this product ideal for flashing details and a variety of waterproofing repairs, such as moving joints and roof penetrations. Superior formulation will not separate.

  • M&R

Features & Benefits

  • High flexibility to accommodate temperature-related expansion and contractor of the roof system
  • Provides exceptional weathering characteristics over a wide range of challenging conditions temperatures and weather
  • Will not mudcrack and will remain highly resilient and durable through all seasons
  • Interlocking fiber matrix assures uniform, excellent adhesion
  • Exhibits excellent sag resistance when used on vertical surfaces, even at high temperatures
  • Non-destructive to conventional asphalt based roofing membranes
  • Repairing flashings, asphalt shingles, conventional built-up roofs, metal and masonry surfaces
  • Sealing leaks and openings at flashings (chimneys, vents, skylights, metal joints, gutters and similar objects used in constructing built-up flashings)
  • Do not store at temperatures below 45°F or in excess of 120°F
  • Meets  Miami-Dade-County Standards



Item ID Description Packaging Qty per Ctn Weight per Ctn Cover Rate
16MH2313 MH 231 FLASHING CEMENT 3 GAL Metal Pail 1 27 8 gallons per 100 sq. ft. for 1/8"
16MH2315 MH 231 FLASHING CEMENT 5 GAL Metal Pail 1 42 8 gallons per 100 sq. ft. for 1/8"


Application Example Image

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