Remove any traces of dirt, old wallpaper or flaking paint.Cracks and irregularities should be filled with a suitable filler.All surfaces must be clean and dry.Damp walls should be treated before hanging.Unsound paint should be sealed with an appropriate primer.Gloss painted surfaces should be sanded before hanging.Absorbent surfaces such as new plaster should be sized before hanging. We recommend the use of Farrow & Ball Wallpaper Paste, which is specially formulated as the perfect paste for Farrow & Ball wallpapers which are 140gsm and are classified as medium to heavy grade paper.Apply a generous, even coat of paste over the paper, working from the centre outwards. Ensure that the edges are well pasted but avoid paste coming into contact with the pattern side of the paper. Fold the paper with the adhesive side innermost and allow the paper to soak for 10 minutes, until pliable. If the paper becomes too wet it will shrink back as it dries.