Before you get started
- Don’t pull out old nails, since you’ll risk damaging your plasterboard. Instead, tap these nails into the wall, then fill the holes with a filling compound.
- Crayon and ballpoint pen marks on walls will bleed through a fresh coat of paint. To remove them, rub with a dab of toothpaste on a damp cloth, then rinse with clean water. If some marks still remain, cover them with a stain sealer.
- Use a water-based acrylic sealant to fill cracks, scratches and seams in plaster and plasterboard before painting or papering. Apply it with a sealant gun or straight from the tube, and smooth it with a wet fingertip (while wearing protective surgical gloves).
- To remove mould before repainting, use a mildew remover or a solution of one part bleach to two parts water. Don’t use a household cleaner; the resulting oily patch may prevent fresh paint from adhering.