Next week I'm starting the base and hearth installation for my Casa 110. In looking at the designs provided here on the site I have a question about how to pour the hearth once the masonry base is in place. How do you keep the concrete from flowing down into the openings in the bricks? The plywood forms seem to create the hearth base at the level of the top of the bricks, but since not all bricks are filled with concrete/rebar, won't concrete flow into the remaining openings?
No announcement yet.