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OSI RF140 Roof & Flashing Sealant is manufactured using a special synthetic rubber and select cuts of asphalts
By combining these two materials, the natural tendency of hardening and softening generally associated with asphalt is modified considerably with the rubber
This allows OSI RF140 to cure into a tough, rubbery stage which will expand and contract more readily during temperature variations
In addition, the adhesion characteristics of the asphalt are augmented with a stable tackifying resin which will provides a lasting and flexible bond to most surfaces
Unlike other roofing cements, OSI RF140 can be applied at temperatures between 20 F (-6
67 C) and 90 F (32 C) without difficulty in extrusion
Also, it resists the cracking which is common to most types of plastic roof cements
1/8/25
Exceptional product! The results were incredible and I couldn't be happier. Worth every penny!
5/15/24
Fantastic quality and very useful! I’m thrilled with my purchase and will definitely buy again.
7/30/24
This is by far one of the best purchases I’ve made. It’s efficient, stylish, and easy to use.
1/22/25
Best purchase ever! I can’t believe how well this works. I will be spreading the word!
2/16/25
This product is a game changer! Fantastic performance and easy to use. Highly recommend it!
9/30/24
This item is amazing! High quality and it works exactly as described. Highly recommend! ⭐⭐⭐⭐⭐
