Wallpaper Problem

[Coldicote]

I have some wallpaper coming unstuck and rolling back away from the wall, area approx 2 sq. metres. There are many kinds of glue and adhesive tapes available but I don’t know where to start. Can anyone advise me please?

[EcclesCake]

That's a large area, have you established why it has become unstuck?

[Coldicote]

Probably due to a nearby heater. I don't want to buy a large quantity of paste and hope for something easy to apply.

[carrust]

http://www.diy.com/nav/decor/decorating-tools-and-supplies/wallpaper-tools-pastes-and-solutions/wallpaper_adhesives/-specificproducttype-border___overlap_adhesives/B-and-Q-Border-and-Overlap-Adhesive-500g-10548815
Wet the paper 1st, then apply to wall & paper, then stick it back to the wall. If you use wallpaper paste it will come off again due to the heat from the heater.