BLACK JACK Elasto-Kool 700 4.75-Gallon White Elastomeric Reflective Roof Coating (7-year Limited Warranty)BLACK JACK Elasto Kool 700 White Elastomeric Coating is a quality, highly flexible, white acrylic latex roof coating. This high performance product resists cracking and peeling, while offering tremendous durability and long term life. It expands and contracts up to 250% with the roof's movement to resist damage. The coating provides an excellent, highly protective barrier which reflects the sun's heat and destructive UV rays. In turn, this helps to