I just built my first gas forge, an 18" tube with 2" kaowool and a fire brick floor. My original plan was a think coating of satanite followed by a coating of itc100. I live in a rural area so shipping is killer. I drove an hour to the nearest larger town just to get blank stares at the mention of satanite. The home depot didnt even have any generic refractory cement. Even the concrete supply house shooed me away. The only thing I could come up with is a yellow bucket with the words "Zedmark Refractory" on it off a job site. Problem is, theres no heat rating or anythin on it. Would this be sutable to line my forge for now or should I just eat the cost of shipping?