This mixture is a specially designed, gray-colored refractory cement that is non-water soluble after drying. Use Flue Goo II for flue tile installations, as well as for setting firebrick and parging the walls of smoke chambers. Sold in powder form in resealable, 1 gallon plastic tubs. Each gallon will set about 10 to 20 flue tiles, 30 firebrick, or will cover 4 to 6 sq. ft. when parged to a thickness of 1/8" to 1/4". Flue Goo II withstands up to 2200° F. Not for exterior use.
WARNING: Carcinogens: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.