LC34 Flame Deflector - Saturn 1B

Model of the flame deflector for pad 34 used for the Saturn 1B launches. Model made from drawing outlines and dimensional data on a photo. I have not been able to find actual construction drawings or what was used as a refractory material on the top surfaces that redirect the rocket exhaust. When I finish painting I'm gong to use AK concrete to represent the refractory. It's 1/72 scale. Suggest using Gloop to glue the parts. On the top surfaces, smooth side goes up.