Topic 3 – Hollowness at Flooring and its causes & effects

Topic of discussion in this video is Hollowness at flooring. Hollow sound which is heard when tapped with a tile hollow checking tool (this can be done with a screwdriver also) shows that the tile or a portion of the tile is not bonded or that there is a void under that portion. Through this video, we want to explain what is hollowness at flooring and its causes & effects.