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Radiators can always be removed before papering, but it is also possible to simply work around them. Begin by securing the wallpaper as usual, pasting it to an inch or so above the radiator. Then allow the bottom section of the length to flap over the radiator surface (Image 1).
Cut the paper so that it will hang down slightly behind the radiator (Image 2).
Use a roller to push the paper behind the radiator (Image 3).
Turn off the power. Hang paper over the switch plate (or remove the plate while hanging). Mark the position of the corners of the plate.
Cut two diagonal slits from corner to corner, creating four triangular flaps. Fold the flaps out from the wall and cut along the folds.
Loosen the switch plate by removing its retaining screws. Rotate the plate and feed it diagonally through the hole in the paper.
Smooth the paper under the switch plate. Reattach the plate and remove any paste with a sponge. Leave the electricity off until dry.
Turn off the power, then remove the light fixture and leave the wires hanging. Brush the paper across the ceiling to the wires (Image 1).
Make a hole in the paper where the wires stick out of the ceiling. Draw the wires through the paper. Continue smoothing down the length of paper (Image 2).
Finish hanging the paper, then reattach the fixtures. Screw the base back into the ceiling, making holes in the paper where necessary (Image 3).
Once the wires and base are secure, screw the final fittings into place. Leave the electricity off until the paper is completely dry (Image 4).
Draw a pencil guide line on the wall at the height you wish the border to hang. Apply the border to the wall with a paperhanging brush (Image 1).
Overlap around corners (Image 2). Move the next length into place, making sure the pattern matches. Trim overlap precisely in corner.
Borders are often used to frame mirrors and other features. To make a frame, they need to be joined at right angles. Use a level to make sure the strips are horizontal and vertical. Try to cross the pasted strips through the middle of a motif to get an approximate pattern match (Image 1).
After placing the borders, use a straight edge and a trimming knife to cut through the overlap at 45 degrees (Image 2).
Remove the excess paper from the end of each strip. You may need to lift the border to remove the paper from underneath (Image 3).
Having removed the excess paper, flatten the borders against the wall and clean the final surface with a wet sponge (Image 4).
The most important consideration when papering a stairwell is to build a safe working platform. The design can be varied, depending on your needs. Pad the tops of the ladders to prevent damaging the wall. You will need someone to help you when hanging long sheets.
Excerpted from Do It Yourself Home Improvement
© Dorling Kindersley Limited 2009