SS ThruWall | Flexible Stainless Steel Flashing for Masonry Veneer
SS ThruWall is a durable, stainless steel fabric flashing bonded to a polymeric fabric for use in cavity wall and masonry veneer construction. Designed as part of the R-Guard building envelope system, this product ensures compatibility with air barrier components while delivering superior performance in both standard and coastal environments. SS ThruWall is made from 60% recycled materials and offers excellent strength, flexibility, and chemical resistance, making it a sustainable and high-performance choice for modern buildings.
Product Description
This flexible transition material provides unmatched puncture and tensile strength, while being easy to cut and install by hand. It is non-staining and compatible with limestone and other sensitive substrates. With Class A fire resistance (ASTM E84) and mold resistance (ASTM D3273), SS ThruWall is designed to meet the demands of high-performance commercial wall systems, including those exposed to harsh coastal conditions where salt resistance is critical. It can be installed using termination bars, sealant lips, or drip edges, and it supports long-term durability in temperature-variable environments.
Key Benefits of SS ThruWall
- Made with 60% recycled stainless steel and fully recyclable
- Compatible with limestone – non-staining formulation
- Fire-resistant (Class A rated)
- Superior puncture and tensile strength
- Flexible and easy to cut or shape by hand
- Mold-resistant and suitable for high-temp applications
- Coastal version available with salt corrosion resistance
Common Applications
- Cavity walls and masonry veneer systems
- Standard and coastal transition joints
- Window openings, end dams, inside and outside corners
Storage & Packaging
Available in 60-ft rolls (12″, 18″, 24″, or 36″ widths). Compatible accessories include End Dam, Inside/Outside Corners, T-96 Termination Bars, Drip Edge, and Weep Vents.
Product Properties
| Property | Value |
|---|---|
| Form | Stainless steel sheet with polypropylene coating, silver/gray color |
| VOC Content | Not applicable |
| PH | Not applicable |
| Freeze Point | Not applicable |
| Flash Point | Not applicable |
| Total Solids | Not applicable |
| Coverage Rate | Not applicable |
| Shelf Life | Not applicable |
| WT/GAL | Not applicable |
| Available Sizes | 12″, 18″, 24″, 36″ x 60-ft rolls; plus accessories: end dam, corners, termination bar, drip edge |
Also see Thru-Wall Flashing for a primerless, UV-resistant alternative. Visit PROSOCO for more R-Guard solutions.






