How to paint with white paint a room of blue color

When applying a light paint color over a dark color, the most important part of the project is the primer layer, a special paint that is applied before the common interior paint. The primer will help the paint to adhere better and last longer, and also prevents the stains and the previous color of the wall from being noticed. Find primer products at home improvement product stores in the paint section.

Check the product labels and purchase a “high coverage” primer to cover the entire base color of the wall and eliminate the need to apply multiple layers of common paint, a product that can be expensive. Taking the extra step of applying the primer on the walls allows you to save time and money.


  1. Remove the furniture from the room or push them into the center of the room and cover them with canvas or a plastic sheet. Take the pictures off the walls.
  2. Use blue painter’s tape to protect the moldings in the windows, the ceiling and those in other areas of the room that can come in contact with the brush or roller.
  3. Remove all nails from the walls and fill the holes with a joint compound suitable for walls to be painted with latex paint. Apply the compound with a small spatula and scrape the excess so that the product covers the hollow flush with the wall. If you are going to re-hang the pictures in the same places, it is not necessary to cover the gaps.
  4. Use the joint compound to fill any holes or cracks in the walls. Allow the compound to dry. Sand these particular areas, if necessary.
  5. Using a screwdriver, remove the covers from the sockets and switch housings before starting to apply the paint.
  6. Cover the floor with a canvas in the area of ​​the walls that you are going to paint. You can move the canvas along the room as you go along painting the walls if you do not have so many tarps to cover the entire floor.
  7. Clean the walls you are going to paint with the help of a sponge mop and a cleaning product suitable for walls that will receive layers of paint; A product that does not generate foam and does not require rinsing. Cleaners containing trisodium phosphate are the best, but you should follow all the safety precautions detailed on the packaging.
  8. Pour the primer onto a paint tray and immerse the roller in the product; Slide the roller several times back and forth over the flat side of the tray to remove excess primer. If the instructions on the product packaging recommend using a wet roller, immerse it in water before beginning the process.
  9. Apply the primer coat with the help of a roller to cover large wall extensions. Pass the roller as close as you can from the moldings to reduce the need to cover those areas with a brush. It starts at the top of the wall and moves downwards, passing the roller over the paint that runs down over the surface. Use a ladder to reach the top of the walls.
  10. To finish the primer coat, apply the paint with a brush on the part where the ceiling is located and the floor with the wall, around the windows and the switches, places that you cannot cover with the roller.
  11. Allow the primer to dry for as long as the manufacturer’s instructions state.
  12. Apply the coat of paint in the same way as the primer; Start with the roller and then with the brush.
  13. Allow the paint to dry according to the manufacturer’s instructions and then apply a second coat.
  14. Replace the covers on the sockets and switch housings after the second coat of paint is dry.
  15. Remove the painter’s tape, pick up the canvas and reposition the furniture in the corresponding places.

Tips & Warnings

  • If you apply the primer on latex paint, make sure the product is water based and then finish with latex paint.
  • Tarpaulins are more expensive than plastic sheets, but they can be moved more easily and will serve you for many future projects.
  • If you have to leave the project for a few hours or even overnight, cover the rollers or brushes with plastic wrappers (you can use ordinary plastic bags attached to a rubber band) to keep them moist and ready to use. This way you will not have to waste time cleaning the rollers before finishing the job.
  • Have a dry cloth and a damp cloth on hand while applying the paint to wipe the product splashes before they dry.
  • Keep the room ventilated while painting the walls. Opens one or more windows and uses a fan to accelerate the drying process and prevent the accumulation of dangerous gases and odors.