DOUBLE GLUING: WHERE? WHEN? HOW? WHY?
I explain to you all the requirements and conditions of double gluing
WHEN? This will depend on the choice of your tiling, above 30x30cm on the floor and on the wall, double gluing will be mandatory.
OR? On the floor and on the wall and all formats of tiling outdoors, on sound insulation and on the Nate of uncoupling.
HOW? By spreading the glue on your support and by spreading the glue on the back of your tiles.
WHY?: It promotes the transfer of the glue and regains certain imperfection of the support.