Uniclic is widely known for its strong locking performance due to the possibility to use pre-tension. The Uniclic profile can thus be designed in such a way that the flexible lower lip will still be under a bit of stress after locking. This tension pulls the engaged planks closer together, which ensures there are no unwanted gaps or spaces between floorboards.
An additional advantage of the flexible lower lip is that the combination of contacting surfaces and spaces in the joint allows wider machining tolerances without compromising the security of interlocked joints. This tolerance flexibility is an important asset for manufacturers who produce on high speed machinery.
In addition to the pre-tension benefits, the Uniclic profiles interlock very securely. The gaps and spaces in the design of the Uniclic profile limit the movement of two boards when walked on, which reduces the unwanted creaking sounds that commonly occur in other flooring installed with glueless locking.