Corpus sync: neutrality remakes, note hygiene, datasheet relocation, transformer-split cross-refs
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title: Wood Flooring
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### The product type is the foundational selection; it determines which substrates and attachment methods are available, the achievable board width, the dimensional stability, and the refinishing lifecycle. {note}
+### The product type shall be selected for the substrate, the climate stability of the space, and the attachment method, and shall be indicated in the [[drawing: finish schedule]].
+
```datasheet
label: Product Type
…10 unchanged lines
default: "Engineered multi-ply plank flooring (hardwood face veneer)"
```
−
−### The product type shall be selected for the substrate, the climate stability of the space, and the attachment method, and shall be indicated in the [[drawing: finish schedule]].
### Solid wood is milled from a single piece of hardwood and can be sanded and refinished many times, but it moves the most with humidity and is restricted to above-grade wood subfloors or to sleeper assemblies over concrete; it is not appropriate directly on or below grade. Engineered flooring is built up from a hardwood face veneer over a cross-laminated plywood or HDF core, which dramatically reduces dimensional movement and allows installation over concrete on and above grade by glue-down or floating; its refinishing lifecycle is limited by the veneer thickness. Parquet is small finger blocks or patterned pieces, usually glued down. Maple gymnasium floors are a specialty assembly of solid hard maple over a sprung or pad-and-sleeper system engineered for athletic performance. End-grain block, set with the grain vertical, is an industrial wearing surface, not a typical commercial finish. {note}
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## The Contractor shall deliver to the Owner sealed attic stock of each flooring type, species, grade, and color installed, together with touch-up and, for site-finished floors, matching finish material, in a quantity sufficient for localized repair and labeled with the species, grade, color, and lot information.
## Because wood color and grain vary over production runs and a later finish ambers with age, attic stock from the original lot is the only reliable way to make an inconspicuous repair; replacement material bought years later will rarely match the installed floor's color and patina. {note}