Please justify, why do not use dispersion fillers for smoothing substrates, if metallized or plastic wallpapers are not to be applied

Metallized wallpapers and plastic wallpapers …

In the representative room, on plaster made of PII mortar, already painted with dispersion paint, metallized wallpaper is to be applied. Please list the necessary steps for applying metallic wallpapers

These steps are as follows:

1) abrasion of the plaster surface;

2) repairing small damage to plaster …

Room walls, plastered with mortar from the PII group, covered with cork wallpaper. It is planned to cover the walls with textile wallpaper. Please list the necessary steps

These steps are as follows:

1) removal of cork wallpaper by soaking, detachment and detachment;
2) repairing small damage to plaster with the use of …