R-Guard FastFlash
Liquid flashing membrane for rough openings, transitions, and seams — gun- or roller-grade, waterproof immediately.
$116.05
Lead Time: 5 business days
Shipping: Quoted after checkout
PROSOCO R-Guard FastFlash is a fluid-applied STP liquid flashing membrane used to waterproof and detail rough openings, seams, and transitions on the building envelope.
What it does
Available in gun-grade or roller-grade, FastFlash trowels, rolls, or guns into shape and cures into a seamless elastomeric flashing. It bonds to most substrates without primer and self-seals around fasteners and small cracks, making it a one-product solution for the kinds of details where peel-and-stick membranes fold and gap.
When and where to use it
- Waterproofing window and door rough openings
- Detailing transitions, seams, and inside/outside corners on sheathing
- Counter-flashing waterproofing and air-barrier components
- Sealing penetrations and protecting countersunk fasteners
- New construction and retrofit
Key benefits
- Single-component STP — guns, spreads, tools, or rolls
- Bonds to dry or damp substrates and tolerates rain immediately
- Self-seals around fasteners
- LEED verified, CalGreen compliant, Declare label
- ASTM E2357, E96, E84 tested; ICC-ES AC148 approved
Format
Coverage 15–28 sq ft per 20–29 oz unit; 1-year shelf life.
Key Specifications
| Property | Specification |
|---|---|
| Container Size | 20oz, 29oz, 2gal |
| Container Type | Cartridge, Container, Sausage |
| Package | Case of 4 × 20 oz Sausages, Case of 8 × 20 oz Sausages, Case of 20 × 20 oz Sausages, Case of 12 × 29 oz Cartridges, 2 Gallon Container (Roller-Grade), Pallet — 420 Cartridges, Pallet — 900 Sausages, Pallet — 120 × 2 Gal Containers |
| Packs per Pallet | 120, 420, 900 |
| Units | Cartridge, Case, Pallet |
| Pack Size | 12, 1, 4, 8, 4, 8, 12, 20, 1, 20 |
Professional Grade
Built for building professionals
Fast Shipping
Direct from manufacturer
Tech Support
Expert installation guidance
Certified Performance
Tested and documented
