Karnak 19 Ultra Rubberized Flashing Cement Wet/Dry - Emergency Repair (Various Sizes)

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Pick Up Available in Westchester & NYC
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19 Ultra Flashing Cement is the next generation elastomeric flashing cement. Scientifically compounded with a selection of rubber reinforced asphalt, mineral fibers, and refined solvents. 19 Ultra is manufactured to a heavy pliable consistency for ease of application by trowel. 19 Ultra provides a durable elastomeric coating of greater strength, excellent adhesion and high resistance to water and weathering.

19 Ultra is composed of special chemical ingredients which give it a unique water displacement quality (Wet/Dry). 19 Ultra dries to a tough, flexible, waterproof and corrosion proof rubber coating which gives maximum protection and excellent performance over wide ranges of temperature and weather conditions. 19 Ultra is available in 3 consistencies: Summer, Semi and Winter grade


55 gallon drums(pre-order)
5 gallon pails (in stock)
3 gallon buckets (pre-order)
1 gallon cans (pre-order)
10.1 oz. caulk tubes (pre-order)


Rubberized – elastomeric
Wet or dry application
Improved low-temperature flexibility
Will not shrink or crack
Smooth, easy to apply rubber-like trowel consistency
Excellent adhesion
Excellent resistance to flow (sag) at high roof temperatures
Ready to apply – no mixing required
Sticks under water the first time
Can use with fiberglass membrane under water
Greater strength
ASTM compliant