MortarFlash Stainless Steel Flashing Roll

MortarFlash® Self-Adhering Stainless Steel Flashing

Thickness: 2 Mil | Length: 50′

MortarFlash® Self-Adhering Stainless Steel is a high-performance flashing designed for durability and ease of installation. It consists of a flexible 2 mil sheet of Type 304 stainless steel with a high-tack butyl adhesive on the back, delivering best-in-class puncture and tear resistance. This product is engineered to withstand harsh environmental conditions, making it ideal for demanding construction applications.

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MortarFlash® Self-Adhering Stainless Steel Flashing Technical Data SheetTechnical Data Sheetstechnical-data-sheets
Mortar Net termination bar

Termination Bar

Now offering type 304 stainless steel and aluminum termination bar in 8′ lengths. They are also available in the T1 and T2 profile to fit your project needs. We always recommend termination bar to mechanically fasten the flashing.

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Metal Drip Edge colors

Metal Drip Edge

Mortar Net’s drip edge’s are available in stainless steel, cold-rolled copper, and four colors of Kynar-coated galvanized steel. All come with a 3/8” hemmed edge to create clean-looking edges during installation. Combine with our metal corner drip edges to complete the installation.

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Mortar Net adjustable drip edge corner

Metal Drip Edge Corners

Mortar Net Solutions offers metal drip edge corners that match the profile of our drip edge to help maintain the functionality of the flashing installation while creating a clean-looking corner every time.

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BTL-1 Butyl Sealant

BTL-1™ Butyl Sealant

BTL-1 is a synthetic rubber sealant that is ideal for most construction applications. It produces high-performance joints with both high strength and elasticity.

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  • Available Grades: Type 304 stainless steel (standard) and Type 316 stainless steel (for coastal/more corrosive environments)
  • Butyl Adhesive: Excellent adhesion to substrates like OSB, exterior gypsum, plywood, concrete, metals, and air barrier materials.  No primer required.
  • Surface Adhesion: Stainless steel face provides excellent adhesion for air barriers and sealants
  • UV Stability: Unlimited exposure; must be concealed within 180 days to prevent damage
  • Workability: Flexible, easy to cut, and form by hand
  • Sustainability: Made with 60% recycled content

Applications:

  • Through-wall flashing
  • Transition membrane (air barriers, parapet, roofing, waterproofing)
  • Window and door sill pan flashing
  • Jamb closure flashing
  • Roof-to-parapet flashing
  • Deck ledger flashing
  • Repair tape for flashing, air barriers, etc
  • Lap tape

Compatibility:

  • Air barriers
  • Spray polyurethane foam
  • Insulation boards
  • Below-grade waterproofing
  • Roofing membranes
  • Construction sealants
THICKNESSROLL HEIGHTROLL LENGTHROLLS/BOXSF/BOXBOXES/PALLET
0.002″4″50′1220048
6″1220048
9″415030
12″420048
18″215030
24″110050
36″115030

Related Project Profiles

Efficient Flashing Restoration at Porter County 911 Call Center

When RestoreWorks faced persistent window leaks at Porter County’s 911 Call Center, they turned to Keene’s TotalFlash® system for a faster, more reliable solution. With pre-assembled panels and expert support, crews cut flashing time nearly in half—saving labor, reducing complexity, and delivering long-term protection with ease.

Need Support?

Contact our Masonry Systems Specialist.

Greg Skyta