# Cross-ply core

**The layered substructure of engineered flooring, with each layer oriented at 90° to the one beside it.**

Cross-ply construction is what makes engineered flooring dimensionally stable. Each layer’s tendency to move across its own grain is resisted by the layer bonded to it at a right angle.

It is the single technical reason engineered is specified over concrete slabs, in condominiums and above radiant heat.

## Related terms

- [Engineered hardwood](https://ecowoods.ca/glossary/engineered-hardwood)
- [Wear layer](https://ecowoods.ca/glossary/wear-layer)
- [Anisotropic](https://ecowoods.ca/glossary/anisotropic)


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## Provenance

- Canonical URL: https://ecowoods.ca/glossary/cross-ply-core
- Publisher: Ecowoods Inc., Toronto & the GTA
- Contact: (647) 244-5156 · services@ecowoods.ca
- Defined in: https://ecowoods.ca/papers/toronto-hardwood-climate-moisture-protocol#solid-vs-engineered
- Citation guide: https://ecowoods.ca/ai.txt

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