I have purchased two 3x5 sheets of Durock to be used as my base for the hearth pour. Two questions:
1. It looks like I can avoid cutting the two sheets if I simply build my wooden support stand flush to the top of my concrete blocks, and then lay the sheets on top - then fasten them to the wood. I am using 1/2 inch size. I will have overlap of a few inches over the concrete block. I assume this is ok?
2. IF I do (1) above and let it overlap. Can the Durock handle the concrete pour without buckling, or do I need a plywood sheet for support for the pour (instead of tying directly into the wood)?
Thanks!
1. It looks like I can avoid cutting the two sheets if I simply build my wooden support stand flush to the top of my concrete blocks, and then lay the sheets on top - then fasten them to the wood. I am using 1/2 inch size. I will have overlap of a few inches over the concrete block. I assume this is ok?
2. IF I do (1) above and let it overlap. Can the Durock handle the concrete pour without buckling, or do I need a plywood sheet for support for the pour (instead of tying directly into the wood)?
Thanks!
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