MORTARFLASH® SELF-ADHERING STAINLESS STEEL FLASHING
MortarFlash® Self-Adhering Stainless Steel Flashing is a high-performance flashing membrane engineered for durability, flexibility, and easy installation in masonry wall assemblies. It features a 2 mil sheet of Type 304 stainless steel laminated to a high-tack butyl adhesive, providing exceptional puncture resistance, tear strength, and long-term corrosion resistance.
Designed for demanding construction environments, this self-adhering flashing bonds directly to common construction substrates without the need for primer, delivering reliable moisture protection at critical wall flashing locations.
FEATURES
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Self-adhering installation – high-tack butyl adhesive allows fast installation without primers
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Stainless steel durability – 2 mil Type 304 stainless steel provides superior puncture and tear resistance
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Excellent substrate adhesion – bonds to OSB, plywood, gypsum sheathing, concrete, metal, and air barrier materials
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Corrosion resistance – available in Type 304 stainless steel (standard) or Type 316 for coastal environments
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Excellent bonding surface – stainless steel face provides strong adhesion for air barriers and sealants
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Flexible and easy to form – cuts easily and conforms to wall details by hand
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UV stable material – unlimited UV stability (must be concealed within 180 days)
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Sustainable material – manufactured with approximately 60% recycled stainless steel
APPLICATIONS
MortarFlash Self-Adhering Stainless Steel Flashing is designed for a wide range of masonry flashing and building envelope applications.
Common applications include:
- through-wall flashing at base of wall
- flashing above windows and doors
- roof-to-parapet transitions
- window and door sill pan flashing
- jamb closure flashing
- deck ledger flashing
- transition membrane between building envelope systems
- repair tape for flashing and air barrier membranes
- lap tape for flashing and membrane systems
COMPATIBILITY
MortarFlash Self-Adhering Stainless Steel Flashing is compatible with many common building envelope materials, including:
- air barrier systems
- spray polyurethane foam insulation
- rigid insulation boards
- below-grade waterproofing systems
- roofing membranes
- construction sealants
INSTALLATION
The self-adhering butyl backing allows MortarFlash to be installed directly onto prepared substrates without primer. Once applied, the stainless steel face provides an ideal surface for integration with air barriers, sealants, and other building envelope components.
PACKAGING
| THICKNESS |
ROLL HEIGHT |
ROLL LENGTH |
ROLLS/BOX |
LF/BOX |
BOXES/PALLET |
| 0.002″ |
4″ |
50′ |
12 |
600 |
48 |
| 6″ |
12 |
600 |
48 |
| 9″ |
4 |
200 |
30 |
| 12″ |
4 |
200 |
48 |
| 18″ |
2 |
100 |
30 |
| 24″ |
1 |
50 |
50 |
| 36″ |
1 |
50 |
30 |
RESOURCES
