Commercial LVT Installation: A Professional Guide
LVT installation in commercial settings involves a level of precision, documentation and quality control that exceeds typical residential projects. Commercial clients have specific requirements, warranty conditions are often more demanding, and the consequences of installation failure in an occupied commercial building are more significant. This guide covers the key considerations for professional LVT installation in commercial environments.
Subfloor Requirements for Commercial LVT
Commercial LVT specifications typically require a higher standard of subfloor flatness than residential installations. The industry standard for commercial glue-down LVT is a maximum of 3mm variation under a 1.8 metre straightedge, but some manufacturers specify 2mm. On large commercial areas, achieving this flatness across the whole floor requires systematic assessment and levelling compound application, often in multiple passes.
Concrete subfloors in commercial buildings often have old adhesive residues, contamination from industrial processes, or surface imperfections from previous floor covering removal. These must be addressed before LVT can be installed. Shot blasting is the most efficient method for preparing a contaminated concrete subfloor on commercial projects; it removes old adhesive and contamination while providing the mechanical profile (surface texture) needed for good adhesive bond.
Adhesive Selection and Application
For commercial glue-down LVT, a pressure-sensitive adhesive with a documented open time and pot life appropriate to the working conditions is required. On large commercial areas where the adhesive may need to remain workable for extended periods, a longer open time adhesive is preferable. In warm conditions, working in sections ensures adhesive is not laid so far ahead of the tiles that it passes its working window before the tile is placed.
Apply the adhesive at the manufacturer's specified coverage rate using the correct notched trowel. This is one of the most common areas where commercial installations fail: insufficient adhesive coverage produces weak spots in the bond that cause tiles to lift under commercial foot traffic. Coverage rates in grams per square metre, not just a visual assessment of coverage, should be verified.
Layout Planning
On large commercial areas, careful layout planning before any tile is placed prevents the most visible installation problems. Setting out from the centre of the room, or from a key visual line such as the main entrance axis, ensures that cut tiles at opposite perimeters are balanced and that pattern elements (particularly in tiles with directional or grain patterns) flow correctly through the space.
In commercial buildings, changes in floor level at door thresholds, expansion joint locations, and the relationship between the LVT floor and adjacent floor finishes in other areas all need to be planned and resolved before installation begins.
Flash Coving
In commercial kitchens, food retail, healthcare and laboratory settings, LVT flooring is often required to turn up the wall to a height of 100mm to 150mm in a seamless curve, called a flash cove or coved skirting. This eliminates the joint between floor and wall where bacteria can accumulate and moisture can penetrate. Specialised flash coving tools form the radius at the floor-wall junction, and the LVT is bonded up the wall using appropriate contact adhesive.
- Flatness requirement: 3mm maximum deviation under 1.8m straightedge (or manufacturer spec)
- Shot blast contaminated concrete subfloors
- Apply adhesive at correct coverage rate verified by weight
- Plan layout from centre or key axis before starting
- Flash coving required in food, healthcare and clean environments
- Document subfloor condition, adhesive products and moisture readings
Commercial LVT installation executed to a professional standard produces a floor that performs reliably under demanding use and satisfies commercial warranty requirements. The additional rigour compared to residential work is primarily in documentation, flatness tolerance and adhesive application discipline.