Dust, enemy of wallpaper!

Why?

When dust settles on top of a primed wall it’ll create a barrier between the primer and wallpaper, so basically the paste (adhesive) just sticks to the dust.

This will create issues like peel offs, bubbles and seams splitting.

Dust includes sanding, wood cutting and or cleaning, if there’s too much dust on the floors, a vacuum should be used instead of a broom.

Absolutely no dust should be present at the time of installation, in any area.