Plank Size Explained Glue-Down LVT · Length & Width · Nominal vs Actual · Tile Formats
Plank size defines the nominal length and width of a glue-down LVT plank or tile — the starting point for layout planning, visual scale decisions, and subfloor preparation. Larger planks create a more expansive look with fewer seams but transmit subfloor irregularities more directly to the surface. Glue-down LVT is available in a wider range of format sizes than most floating products because the adhesive bond eliminates the floating system's dimensional accumulation constraints. Reference-only: no product recommendations.
Glue-down plank LVT typically ranges from 6×36 to 12×48 inches. Tile formats range from 12×12 to 18×18 or 12×24. Spec sheet sizes are nominal; actual dimensions may vary ±1/32 in. Larger formats demand better subfloor flatness because they bridge longer spans. Size is an aesthetic and logistical choice, not a performance indicator.
Typical Glue-Down LVT Sizes
| Format | Typical Size Range | Common Application |
|---|---|---|
| Narrow plank | 4"–6" × 36" | Strip wood look, corridors |
| Standard plank | 6"–9" × 36"–48" | Offices, retail, healthcare |
| Wide plank | 9"–12" × 48"–60" | Open-plan commercial, hospitality |
| Standard tile | 12"×12" to 18"×18" | Entryways, stone-look designs |
| Plank-tile | 12"×24" | Large-format stone look, commercial |
Nominal vs actual dimensions
Dimensions listed on spec sheets are nominal — they represent the target design size. Actual measured dimensions may vary by ±1/32 inch (±0.8 mm) or more depending on manufacturing tolerances and the temperature at which the product is measured (LVT expands slightly at higher temperatures). For most glue-down installations, this tolerance is absorbed within the adhesive joint and is not practically significant. However, for designs involving tight scribing, inset borders, or custom cut-to-fit conditions, measuring actual product dimensions at acclimated temperature is more reliable than relying on the nominal spec.
Plank Size and Subfloor Flatness
Larger planks bridge longer spans of the subfloor. Where the subfloor has a dip or high point within the length of the plank, the plank telegraphs that irregularity to the surface — causing visible lippage or a hollow area that flexes under foot traffic. The standard flatness tolerance for glue-down LVT is 3/16 inch per 10 linear feet. For longer planks (48 inches or more), any localized deviation that falls within the plank footprint is more likely to cause a detectable problem than the same deviation under a shorter tile. Subfloor remediation — grinding high spots and filling low spots with Portland cement-based patch — is especially important before installing large-format glue-down products on slabs with typical concrete finish irregularities.
Spec Sheet Checklist
- Confirm the nominal length and width in consistent units (inches or millimeters) and whether the product is plank or tile format.
- Check the dimensional tolerance listed on the spec sheet — ±1/32 inch (±0.8 mm) is typical; compare against any precision installation requirements.
- Review the subfloor flatness requirement for the specific plank size — larger formats demand better flatness and may require remediation of typical concrete slab variation.
- Calculate carton coverage from the plank dimensions and piece count to plan ordering quantities and waste factors.
- Consider the visual scale relative to room dimensions — very wide planks in narrow rooms can appear disproportionate and may create challenging layout geometry.
FAQ
Do bigger planks require a flatter subfloor? ⌄
Yes, in practical terms. A longer plank bridges a larger span, so any subfloor dip or bump within that span telegraphs directly to the plank surface — causing visible lippage or a hollow spot that flexes underfoot. The standard flatness requirement of 3/16 inch per 10 feet applies to all glue-down LVT, but this tolerance is effectively more demanding for long planks because more floor area falls within one plank's footprint. Tile formats are somewhat more forgiving of localized irregularity because each tile bridges a shorter span.
Are plank sizes listed on spec sheets nominal or actual? ⌄
Spec sheet sizes are nominal — the target design dimension. Actual measured dimensions may differ by ±1/32 inch or more depending on manufacturing tolerances and measurement temperature. For most glue-down applications, this tolerance is absorbed within the adhesive joint and is not significant. For precision design conditions — tight borders, scribing, or inset patterns — measuring actual product dimensions at acclimated conditions is more reliable than relying on the nominal spec.
What are typical plank size ranges for glue-down LVT? ⌄
Glue-down plank LVT ranges from narrow strip formats (4–6 inches wide × 36 inches long) to wide-plank commercial formats (9–12 inches wide × 48–60 inches long). Tile formats range from 12×12 to 18×18 inches, with 12×24 plank-tile format common for large-format stone looks. Glue-down products are available in a wider size range than floating LVT because the adhesive bond eliminates the run-length expansion accumulation that limits floating formats in large rooms.
Does plank size affect adhesive requirements? ⌄
Plank size generally does not change the adhesive type or trowel notch specification — those are determined by the product construction and manufacturer's system requirements. However, larger planks have greater surface area, so any weakness in adhesive bond coverage (hollow spots from poor rolling, missed areas, or contaminated substrate) creates larger unbonded zones with more leverage on the bond perimeter. Complete adhesive coverage and thorough rolling with a 75–100 lb floor roller are important for all glue-down LVT, and are especially critical for wide and long format planks.
Related specs to compare
Reference-Only Information
This page provides general informational reference about plank size for glue-down LVT. It does not provide installation guidance, professional advice, or product recommendations.