Skip to content
CertainTeed SmartFlash ONE One-Part Liquid Applied Flashing & Repair Resin, 5 Gallon Pail
Regular price $367.71Orders start at $399 — combine any items to reach the minimum. Learn more
CertainTeed SmartFlash ONE One-Part Liquid Applied Flashing & Repair Resin, 5 Gallon Pail
CertainTeed SmartFlash ONE is a one-part liquid applied flashing and repair resin supplied in a 5 gallon pail covering approximately 125 sq ft. It is a self-flashing, trowel-applied resin for use in CertainTeed roofing systems and detail repairs. Apply with a trowel or spreader directly at penetrations, transitions and flashing details.
Key Features:
- One-Part Formula: Single-component resin, no mixing required before application.
- Liquid Flashing: Liquid applied flashing for penetrations, curbs, transitions and detail work.
- Repair Resin: Doubles as a repair resin for roof detail and flashing repairs.
- 125 Sq Ft Coverage: A 5 gallon pail covers approximately 125 sq ft.
- Tested Properties: Tested to ASTM D412, D903, D1653, D2240 and D5147 for elastomeric performance.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | CertainTeed Roofing |
| Manufacturer model | 409856 |
| Sell unit | 1 pail, 5 gallon |
| Product line | CertainTeed SmartFlash ONE |
| Coverage per unit | 125 sq ft per 5 gallon pail |
| Material | One-part liquid applied flashing and repair resin |
| Approvals | ASTM D412; ASTM D903; ASTM D1653; ASTM D2240; ASTM D5147 |
| Weight | 44 lb per pail |
| Intended use | Liquid flashing at roof details and flashing repairs in roofing applications |
Coverage & How Much You Need:
One 5 gallon pail covers approximately 125 sq ft at the recommended application thickness. Estimate pails by total detail/flashing area divided by 125 sq ft.
Fit and Compatibility:
Designed for use within CertainTeed Roofing systems at flashing details, penetrations and repairs; pair with CertainTeed membranes, underlayments and reinforcement as directed by the system instructions. Substrate priming requirements should be confirmed with CertainTeed's application guidelines.
Frequently Asked Questions (FAQ):
Q: How much coverage do I get from a pail?
A: A 5 gallon pail covers approximately 125 sq ft.
Q: Does it need mixing?
A: No, SmartFlash ONE is a one-part resin that requires no mixing.
Q: How is it applied?
A: It is liquid applied, typically troweled or spread at flashing details, penetrations and repairs per the manufacturer's instructions.
Q: Can it be used for repairs?
A: Yes, it is specifically formulated as both a liquid flashing and a repair resin.
Q: How heavy is a pail?
A: Each 5 gallon pail weighs approximately 44 lb.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
SmartFlash ONE simplifies detail work on CertainTeed roof systems: no mixing, no measuring, just trowel it where flashing geometry gets tricky. It pairs naturally with CertainTeed membranes and reinforcement at curbs, penetrations and transition details. Confirm substrate preparation and primer requirements against CertainTeed's current application instructions before use.
Wear gloves and eye protection when handling resin products and work in a well-ventilated area per the product safety data sheet.
Order CertainTeed SmartFlash ONE liquid applied flashing resin in the 5 gallon pail today.
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
