| A. | It is strongly recommended but if you don't want to use it, there is no problem as long as 10 mm are left as expansion joint (even more if the skirting makes it possible).
It is also recommended to check if the drying of the ground is correct and that the humidity is not very high in order not to use this intermediate expansion joint.
If we didn't have these factors under control, we could have an excess of expansion that together with the excess of square meters in continuous installation (without any joint) would cause lifting, curving, etc. |