Karnak 19 Ultra Flashing Cement is the next generation of elastomeric flashing cement. Designed as the most time saving and cost-effective roof leak repair product on the market. It is therefore used to cover cracks in failing systems because this product can reseal a leak instantaneously and can even be applied UNDERWATER.

Scientifically compounded with a selection of rubber reinforced asphalt, mineral fibres, and refined solvents. 19 Ultra is therefore manufactured to a heavy pliable consistency for easy application by trowel. 19 Ultra provides a durable elastomeric coating of greater strength, excellent adhesion and high resistance to water and weathering.