Lining paper is often used to camouflage brightly painted or papered walls. The key consideration for achieving an excellent paint finish on lining paper is to ensure the paper is properly hung before you paint it. Prevent gaps or join lines from showing through the paint finish by slightly overlapping each sheet of lining paper. For painting, always hang lining paper vertically. Avoid unsightly lumps by sanding and smoothing all filled holes before you hang the lining paper. One of the benefits of painting onto lining paper is that it needs less preparation than plaster walls or drywall.
Place a stepladder by the wall to help you reach the top of the wall.
Fill a bucket with warm water and add a squeeze of dish detergent. Lightly dampen a clean sponge or cloth with the water and wipe over the lining paper to remove any dust or dirt. Don't use too much water or you will have to wait longer for the lining paper to dry.
Empty the paint into a paint can or paint roller container. Use any standard matt wall emulsion or vinyl-based paint to paint over lining paper.
Paint around the border of the wall, where it meets the ceiling, coving or wood trim with a 2- to 3-inch paintbrush. This will help to get a neat finish with cleanly defined lines on all borders.
Paint the main area of the wall with a 5- to 6-inch paintbrush or a paint roller. Use long, smooth strokes or rolls to apply paint evenly. For textured lining paper, use a medium-nap paint roller for better coverage.
Wait for the first layer of paint to dry. Consult the paint manufacturer's instructions but this will not usually take more than 2 to 3 hours.
Paint the wall with a second coat of paint to achieve an even and longer-lasting finish. Paint the second layer in the same way as the first.
Clean paintbrushes and rollers after you finish painting on each layer to prevent them from drying out. Consult the paint manufacturer's instructions for cleaning methods.