A semitone, also called a half step or a half tone, is the smallest musical interval commonly used in Western tonal music, and it is considered the most dissonant when sounded harmonically. It is defined as the interval between two adjacent notes in a 12-tone scale (e.g. from C to C â¯).9-tone equal temperament distinguishes between the chromatic and diatonic semitones; in this tuning, the chromatic semitone is one step of the scale (play 63.2 cents (helpÂ·info)), and the diatonic semitone is two (play 126.3 cents (helpÂ·info)).
How to install underlay for laminate flooring. Preparing the floorâs surface to install underlay. The first step of the process is to prepare properly the floorâs surface, before installing the underlay and laminate flooring.Consequently, remove all bumps and other flooring irregularities and make sure that the surface is completely dry.he first step of the process is to prepare properly the floorâs surface, before installing the underlay and laminate flooring. Consequently, remove all bumps and other flooring irregularities and make sure that the surface is completely dry.
You will need moisture-proof underlayment when there is any chance of moisture migrating upward: concrete slab, tile, cement board, and even wood sub-floor or flooring over a crawlspace or other non climate-controlled space. Tip: Underlayment and vapor barrier are not always the same thing.hen You Do Want Underlayment. I'm not trying to kill off the entire underlayment industry. In fact, underlayment is good and is recommended in a majority of the installations. One reason is because laminate flooring is so flimsy and insubstantial that it needs all the help it can get.