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Answer

Can Giallo Siena marble be used for a fireplace?

Where the stone goes, and what changes when it does

Yes, and it is one of the places the bookmatched figure does the most work, because the surround is read as one surface. The detail that decides it is the joint: a mitred arris makes thin material read as a thick slab, and a laminated edge builds apparent thickness from two pieces.

The figures

ConsiderationRuleSource
Edge profileMitred for apparent thickness; laminated as an alternativeEdge profile dictionary
FinishPolished or honed depending on the roomFinish dictionary
Thermal detailThe hearth and the chamber are set out on the drawingInstallation guidance
StructureThe surround is fixed to a support that carries the loadInstallation guidance

Why this stone behaves this way

A fireplace surround is a frame around a heat source, and the stone is not the part that is heated — the chamber is. The visual job is to make four pieces read as one, and that is an edge and a joint decision before it is a material one.

What these figures are, and what they are not The stone detail and the thermal detail are two different drawings. Nothing on this site is a hearth design, and the stone is never specified inside the heat chamber.

Where these figures come from

  • S16 the architect complete specification guide to marble (bookmatching, edge profiles, calibration, finish behaviour)

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Can Giallo Siena marble be used for a fireplace?