I'm curious about two issues:
- What is the reasoning behind the recommendation of 50% sand with the fireclay? I used 100% dry fireclay, as I found the stuff flowed much better when I plonked a brick down, and in fact the sand seemed to inhibit this 'flow', which ultimately affected the level of each brick and left voids underneath it.
- If using the material(s) dry, what is the purpose of wetting the floor after laying the bricks? Aren't we just trying to create a level cooking floor?