| 1 | Confirm the wood is solid | Examine the plank edge, end grain, and product description. Solid wood should consist of one continuous piece of timber rather than a veneer over a composite core. | Common solid flooring thicknesses include approximately 18–20 mm. Interior boards and furniture planks may be thinner or thicker depending on their intended use. | Good: Continuous end grain and a clearly stated wood species. Warning: Terms such as “wood-look,” “engineered,” or “veneer” when solid wood is required. |
| 2 | Measure plank dimensions | Measure thickness, width, length, and tongue-and-groove dimensions. Check several boards because small variations can affect installation and alignment. | Typical solid flooring widths range from about 75–180 mm, while lengths often vary from approximately 300–2,100 mm. Actual sizes depend on species and product grade. | Good: Consistent dimensions and clean, accurately machined edges. Warning: Warped edges, inconsistent thickness, or dimensions that differ significantly from the specification. |
| 3 | Check moisture content | Use a calibrated moisture meter suitable for the wood species, and take readings from multiple boards and locations. Allow the material to acclimate before installation. | For many climate-controlled interior applications, a moisture content near 6–9% is commonly targeted. The correct range depends on local indoor humidity and installation conditions. | Good: Readings are reasonably uniform and match the expected indoor environment. Warning: Large differences between boards, very wet surfaces, or storage in an uncovered damp area. |
| 4 | Evaluate dimensional stability | Place a straightedge along the face and edge. Look for bowing, cupping, crooking, twisting, and open end checks. | Minor natural movement is normal because wood expands and contracts with humidity. Stability is improved by proper drying, acclimation, and installation gaps. | Good: Boards lie relatively flat with tight joints after sorting. Warning: Severe cup, bow, twist, splits, or movement that prevents the boards from fitting together. |
| 5 | Inspect grade and natural features | Review the amount and size of knots, sapwood, mineral streaks, checks, and color variation. Select a grade that suits the desired appearance and use. | Clear or select grades generally have fewer visible defects; common or rustic grades normally contain more knots and color variation. Grade names are not identical across all suppliers. | Good: Natural features are sound, stable, and consistent with the stated grade. Warning: Loose knots, deep cracks, decay, insect damage, or defects hidden by heavy filler. |
| 6 | Assess surface and machining quality | Inspect the face for milling marks, raised grain, sanding scratches, torn fibers, and uneven finish. Test several tongue-and-groove joints if applicable. | A well-machined plank should have straight edges, clean profiles, and joints that fit without excessive force or gaps. Factory-finished surfaces should have even coverage. | Good: Smooth, consistent surfaces and accurately cut profiles. Warning: Damaged tongues, crushed grooves, uneven coating, burn marks, or visible planer chatter. |
| 7 | Verify storage, sourcing, and suitability | Ask how the planks were dried and stored, whether they are suitable for the intended application, and whether the wood is legally and responsibly sourced. | Store planks flat, supported, and protected from rain and direct ground contact. For flooring, follow the installation instructions for subfloor moisture, acclimation, and expansion gaps. | Good: Dry indoor storage, traceable product information, and clear installation guidance. Warning: Outdoor exposure, sealed wet packaging, missing documentation, or material not rated for the intended environment. |