DE die Raufaser = EN ingrain wallpaper
http://dict.leo.org/ende?lp=ende&p=/oHL..&search=raufaser

Ingrain wallpaper (also called wood-chip wallpaper) is a kind of wallpaper. It consists of two layers of paper with wood fibre in between; different kinds of ingrain wallpaper are distinguished by the size and form of the fibre pieces.
http://en.wikipedia.org/wiki/Ingrain_wallpaper



Ingrain wallpaper is something to cover ugly inner walls; at least here in Switzerland. It’s a strong paper with small wooden chips. It’s cheap and has a nice rough texture.
www.saatchi-gallery.co.uk/crits/index.php?showpic=1143