Mix the paste, following the instructions on the packet. Measure up and cut the first drop, allowing at least 10cm (4in) extra for trimming. Cover the plumb line with chalk, hang it at your starting point and hold the weight in place while you snap the chalked line against the wall.
Lay the paper on the pasting table, wrong side up, with one edge of the paper aligned with the edge of the table and the top aligned with one end of the table.
This prevents paste getting on the table and spreading on the right side of the wallpaper. Apply the paste, working towards the matched edge down the length of the table. Then shift the paper so the other edge matches the other edge of the table, and apply the paste working out the other way. 3 Ensure the whole strip is evenly covered. When you need to move the paper down the table, fold over the pasted end in an S shape.
Apply paste to the other end of the drop in the same way, and then fold up the lower end of the paper. Leave the paper to rest according to the manufacturer's instructions so the paste soaks in.
Carry the pasted paper to the wall, draped over your arm. Hold it up to the wall so that the top is 5cm(2 in) above the edge of the cornice or picture rail and one edge matches the plumbed line. Gradually unfold the paper, smoothing it down with a smoothing brush as you go. Do not apply too much pressure as this might stretch the paper; avoid getting any paste on the right side of the paper.
If bubbles and wrinkles appear, lift the paper away from the wall beyond the fault, and smooth down again. Apply extra paste to the wall if necessary. Try not to stretch the paper as you lift and re-position it. When the whole drop is in place, mark the cutting line at the top by drawing the back of the scissors along the angle between the cornice or picture rail and the wall.
Peel the paper back from the wall slightly and trim along the marked line, or trim with a sharp trimming knife while it is still in position. Repeat at the skirting. Cut subsequent drops, allowing extra for pattern matching if necessary. Always start to paste at the top of the drop, and hang from the top, aligning the pattern carefully. This will be easier if you identify bold elements of the pattern which fall at the seam line before you start.
Run the seam roller down the seams to ensure they are well stuck down. 7 At internal corners, cut down the length of the drop to make a strip 2.5cm(1 in) wider than the distance to the corner. Hang this strip, wrapping it around the corner and cutting into the overlap if necessary to accommodate any bulges. Then mark a new vertical around the corner, and paste and hang the strip you cut off the drop, overlapping the latter slightly. Use the same technique to wrap pa per around external corners.
