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Why the Locking System Matters When Choosing LVP Flooring

Sep 10
3 min read

When shopping for luxury vinyl plank flooring, most people naturally focus on color, plank width, wear layer and price. But there is another feature that can make a major difference in how the floor installs and performs over time: the locking system.


At Plank’d Discount Flooring, all of our products feature the UNICLIC® locking system developed by Unilin. It is one of the most established locking technologies in the flooring industry—and there are practical reasons it is often preferred by manufacturers, installers and homeowners.


Wide angle view of a modern living room with hardwood flooring
20mil Charleston (with UNICLIC)

What is a Click-Lock System?


Most floating LVP floors are not glued or nailed to the subfloor. Instead, the edges of the planks connect to one another to create a continuous floor. The quality of that connection matters because weak or damaged joints can eventually contribute to gaps, movement, raised edges or separated planks.


UNICLIC is an angle-locking system designed to secure adjoining planks both horizontally and vertically. Its profile combines a strong tongue with a flexible lower lip, allowing the pieces to lock firmly together.


Why Is UNICLIC Often Preferred?


Strong, Secure Connections

The locking profile is engineered to create a durable connection between planks. This is especially important with rigid-core LVP, where the edges must withstand everyday foot traffic, furniture and movement across the floor.


It Helps Keep Seams Tight

UNICLIC incorporates a feature called “pretension.” This creates a slight pulling force between connected planks, helping them remain close together and reducing the likelihood of unwanted spaces developing at the seams.


Tighter seams create a cleaner finished appearance and help prevent dirt and spills from easily reaching the joints. However, the locking system alone does not make every floor waterproof; the complete product construction, installation and manufacturer warranty still matter.


Flexible Installation Options

Planks can typically be installed by angling them together. They may also be connected horizontally by carefully tapping them into place where there is not enough room to lift a plank, such as underneath a door jamb or near other obstacles.


That flexibility can make installation easier in complicated rooms and hard-to-reach areas.


Less Movement Between Planks

A secure connection helps the installed planks behave as one continuous floating floor. UNICLIC’s profile is designed to limit movement at the joints, which can reduce the clicking, shifting or creaking sometimes associated with poorly connected flooring.


A Proven, Licensed Technology

UNICLIC is a patented system licensed by Unilin Technologies and used by flooring manufacturers around the world. Choosing a recognized locking system provides added confidence that the joint profile has been intentionally engineered and tested—not simply copied as an unknown generic design.


Does a UNICLIC System Guarantee a Better Floor?


Not by itself. A locking system is an important part of LVP quality, but it is not the only factor to consider. The floor’s overall performance also depends on:


  • The quality and density of its core

  • The thickness and construction of the plank

  • The precision of the manufacturing

  • The wear layer and finish

  • Proper subfloor preparation

  • Correct installation and expansion spacing

  • The manufacturer’s warranty


Even the strongest locking system can be damaged by an uneven subfloor or improper installation. That is why it is important to evaluate the entire product instead of making a decision based on a single specification.


The Bottom Line

UNICLIC is often preferred because it creates strong, tight seams, resists separation and gives installers flexibility in difficult areas. When it is paired with a quality LVP construction and installed over a properly prepared subfloor, it can contribute to a more stable and dependable finished floor.


If you are comparing LVP options and are unsure which specifications really matter, give us a call or stop in our Rocky Mount, VA warehouse. We can help you compare locking systems, wear layers, plank thicknesses and product construction so you can choose the right flooring for your home, rental property or commercial project—without overspending.

 
 

© 2026 by Plank'd Discount Flooring LLC

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