Answer
What is the best base for a patio?
A compacted sub-base plus the right bedding and falls; the base is what makes a patio last.
In short
A patio needs a compacted sub-base and the right bedding for the material, with falls for drainage. Porcelain goes on a full adhesive bed, natural stone on a full mortar bed. Skimping the base is the single most common reason a patio fails.
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