Luxury vinyl plank flooring (LVP) is one of the most popular flooring choices for homes and rentals in Lexington, KY and throughout Central Kentucky because it offers durability, waterproof performance, and lower installation costs than many traditional floors.Β
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LVP shows subfloor imperfections because it's a floating floor that conforms to the surface beneath it rather than being rigid enough to bridge significant variation on its own. A hump, ridge, or low spot in the subfloor that exceeds manufacturer tolerances will eventually telegraph through the plank to the visible surface above it. The thinner the plank and the more pronounced the subfloor variation, the faster and more visibly that telegraphing happens. The solution is always the same: address the subfloor before the floor goes in, not after the imperfection shows up on the surface.
Telegraphing is the term for subfloor imperfections that show through the finished floor surface. It happens because LVP planks, while rigid, are not infinitely so. A plank spanning a ridge or a pronounced high spot gets pushed upward at that point and pulled downward on either side, creating a subtle wave in the surface that becomes visible in raking light or when you look across the floor at a low angle. The effect is most pronounced with thinner planks and least pronounced with thicker, denser planks that have more structural rigidity to resist conforming to the variation beneath them.
The subfloor conditions that telegraph most commonly are ridges from previous flooring installations, fastener heads that have worked up above the subfloor surface, and the edges of OSB or plywood subfloor panels that have swelled or shifted slightly out of plane with adjacent panels. All of these create linear high spots that run across the installation area and show up as parallel ridges in the finished floor surface when viewed in certain lighting conditions. Sanding fastener heads flush, filling panel edge gaps with leveling compound, and addressing any surface ridges before installation are standard prep steps that prevent telegraphing entirely.
Lighting conditions reveal subfloor telegraphing more dramatically than overhead light suggests during installation. A floor that looks perfectly flat under overhead lighting during installation can show significant waviness when natural light rakes across it at a low angle in the morning or evening. This is why homeowners sometimes report that their floor looked fine during installation and developed visible imperfections afterward. The imperfections were there from the beginning. The lighting conditions that reveal them weren't present during the installation. Walking the finished floor with a flashlight held at floor level before signing off on an installation is a reliable way to catch telegraphing issues while they're still addressable.
Most homeowners who discover subfloor telegraphing in their finished floor assume the LVP product is defective. In almost every case the product is performing exactly as designed. LVP is engineered to float over a flat subfloor within the manufacturer's specified tolerance. It is not engineered to hide subfloor imperfections that exceed that tolerance. The root cause of telegraphing is almost always a subfloor prep issue, not a product defect. Understanding that distinction matters because a warranty claim on a telegraphing floor is unlikely to succeed if the subfloor was outside spec when the floor was installed.
Telegraphing complaints are one of the more common post-installation conversations at WarehouseDirect.US, and they almost always follow the same pattern. The customer installed the floor, it looked fine initially, and then they noticed ridges or waves in certain lighting conditions weeks or months later. When we walk through the installation details the subfloor prep step is almost always where the issue originated.
The most preventable version of this problem starts with the flatness check before installation. Flatness is one of the single biggest factors in a quality LVP installation, and it's the step that gets compressed or skipped most often when a project is running behind schedule. We tell every customer buying LVP at WarehouseDirect.US the same thing: spend the time on the subfloor before the floor goes in. Walk it with a straightedge, mark every high spot and low spot, and address every one of them before the first plank goes down. That investment of time at the beginning of the project is what separates a floor that looks great in every lighting condition from one that shows every subfloor imperfection the moment the afternoon sun comes through the window.