How wood construction, board width and moisture stability affect flooring selection.
Choose a wood-flooring product that its manufacturer permits over the specific electric radiant-heating system and floor assembly you plan to use.
The National Wood Flooring Association identifies these selection factors:
- Engineered flooring is generally more dimensionally stable than solid wood, but not every engineered product is suitable for radiant heat.
- Narrow boards move less in width than wider boards of the same species and cut.
- Quartersawn and riftsawn boards are more stable in width than plainsawn boards.
- Species matter: hickory, beech and maple are less suitable unless the flooring manufacturer recommends the particular product.
Follow that product’s limits for temperature, humidity, moisture content and installation. A wood species or “engineered” label alone does not establish compatibility.
Source: NWFA radiant-heat installation guidance, Part III, “Wood Flooring Selection over Radiant Heat.”