Abstract: The present invention relates to a laminar element in the form of a plate, which is adhered to the back of a tile, for dry joining and which provides insulation; said element is used for placement between a floor or deck and a covering material. The design of the element in a squared shape with pressure-sensitive adhesive “male sections” makes it possible to dry-install surfaces, both in new jobs and renovation. The aim is to obtain a finished product with more advantages for the final installation thereof in construction works, and which provides insulation of several types, including acoustic, thermal and insulation against moisture. The invention is applicable for all types of materials used as elements in finishing in the construction sector, both natural and artificial materials, and in rigid tiles or in mosaics.