Calcium silicate or ceramic fiber board

[V-wiz]

Re: Calcium silicate or ceramic fiber board

OK, I will make up your mind for you. Purchase Cal-sil, double up to 4". Order NOW! Don't hesitate or think about it. "Just Do It".

Lol, ya that is my thinking also, my main concern is the 15 LB density VS the 17 LB Density of the Ceramic board.

[Laurentius]

Re: Calcium silicate or ceramic fiber board

OK, I will make up your mind for you. Purchase Cal-sil, double up to 4". Order NOW! Don't hesitate or think about it. "Just Do It".

[V-wiz]

I have to make a decision soon as i need to buy the insulation tomorrow. The cal-sil is rated at 1,200F density is 15 lb, dimensions are 12x36x2 , and its $10 a board, at that price i can double it and get a 4 inch insulation under the bricks. Is this overkill?. Or my other option is getting ceramic fiber, rated at 2,800F , density is 17 lb, dimensions are 24x36x2. The box comes with 3 boards and costs about $115. Please take a look at the specs, specifically the density. I would greatly appreciate the feedback. Thanks