1, Mesh cloth is better. 2, Mesh is not necessary. Only if there are many cracks on the wall, mesh cloths will be accessible; if the cracks are acceptable, bandage can be used to cover them. 3, when paste mesh or use bandage, the binder used must be white latex, and of high quality. 4, Putty, for filling the joints in wall treatment, can be made by gypsum powder mixing with glue, or we can just use finished products to fill putty. When level a wall, we can use talcum?powder, heavy calcium carbonate powder(whiting powder) with addition to glue, and stirred into putty, or finished putty is available, but white latex is needed in the finished putty to increase adhesion of putty. 5, Water-proof putty is used only on the walls which are disturbed by moisture, like the metope of toilet door, not with other parts. Of course, relying on water proof putty completely would be better than ordinary putty, but the cost has increased enormously.
I think Dacron is better. If it is light wall, and if allowed, you can also use wallpaper to cover the spots.
