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OSI RF140 Roof & Flashing Sealant, 10 oz Black
Regular price $6.60Orders start at $399 — combine any items to reach the minimum. Learn more
OSI RF140 Roof & Flashing Sealant, 10 oz Black
OSI RF140 is a synthetic rubber and asphalt roof and flashing sealant that cures to a tough, rubbery seal, supplied in a 10 oz black cartridge. It expands and contracts with temperature swings and bonds flexibly to most surfaces. Ideal for general roof repairs and flashing details.
Key Features:
- Rubberized asphalt formula: Special synthetic rubber combined with select asphalt cuts modifies the hardening and softening typical of asphalt.
- Stays flexible: Cures to a tough, rubbery stage that expands and contracts readily during temperature variations.
- Flexible adhesion: A stable tackifying resin augments asphalt adhesion for a lasting, flexible bond to most surfaces.
- Cold-weather application: Applies easily at temperatures between 20 and 90 degrees F without extrusion difficulty.
- Crack resistant: Resists the cracking common to most plastic roof cements.
- General roof repairs: Excellent for general roof repair work.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | OSI |
| Sell unit | 1 cartridge |
| Product line | OSI RF140 |
| Material | Synthetic rubber and asphalt sealant |
| Color / finish | Black |
| Nominal size | 10 oz cartridge |
| Available colors | Black |
| Available sizes | 10 oz |
| Pack quantity | 1 cartridge |
| Intended use | Roof and flashing sealant for general roof repairs |
Fit and Compatibility:
Use with asphalt and flashing repairs on most roof surfaces; pairs with standard flashing materials and roof cement applications.
Frequently Asked Questions (FAQ):
Q: What is included?
A: One 10 oz black cartridge of OSI RF140 roof and flashing sealant.
Q: What temperature range can I apply it in?
A: It extrudes without difficulty between 20 and 90 degrees F.
Q: Will it crack like plastic roof cements?
A: No, its rubberized asphalt formula is designed to resist cracking and flex with temperature changes.
Q: What surfaces does it bond to?
A: The tackifying resin provides a lasting, flexible bond to most surfaces.
Q: What is it best used for?
A: General roof repairs and flashing sealing.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
RF140 is a solid choice for general roof and flashing repair because its rubber-modified asphalt stays flexible and resists cracking. Because it extrudes down to 20 degrees F, it extends the sealant season in cold climates. Tool the bead fully for best adhesion and use on sound, clean surfaces.
Follow the sealant label safety directions and ventilate the work area when applying solvent-containing roofing sealants.
Order OSI RF140 roof and flashing sealant in the 10 oz black cartridge today.
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