Answer
Do patios need expansion gaps?
Larger patios, especially porcelain, need movement allowance designed into the joints and bed.
In short
Large patios, and porcelain in particular, benefit from movement allowance so the surface can expand and contract with temperature without cracking. On a well-built patio this is designed in through the joints and the bed. It is part of laying a patio properly rather than something you notice.
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