How to paint a ceiling
Before you start, make sure the relative humidity is 50%. If it’s lower, the paint will dry too fast and brushstrokes will show. Here are some guidelines to follow:
- Ideally, the room temperature should be between 20ºC and 26ºC.
- Prepare the surface well, removing any contaminants that might prevent the paint from adhering well. Be sure the surface is clean and dry before applying paint.
- If necessary, repair small surface imperfections and sand lightly.
- Apply the right primer for the type of surface: either an acrylic primer (new surface) or undercoat (older surface that was previously painted).
- Use a ceiling paint with an ultra flat finish.
- Trim around the entire ceiling with a good quality brush.
- Use a good quality lint-free 10-15 mm roller. Start in one corner and paint an entire length with one stroke, without pausing. Apply generously.
- Avoid painting over freshly painted areas.
- Create a narrow joint between 2 adjoining ceilings.
- Respect recommended drying time between coats.
- Let dry 24 hours for lighter colours and 72 hours for darker colours.
- Close all doors and windows during application to extend drying times.
Steps for application
Use a stepladder or a roller with an extension. Apply painter’s tape around the top edge of the walls, as close to the ceiling as possible, for a nice clean edge and avoid seepage. Always paint in the direction of the narrower length of the room to ensure your brushstrokes blend together while the paint is still wet.
- With a paintbrush, paint around ceiling trim. Start in one corner and paint around the entire edge of the ceiling.
- With a roller, paint a section of the ceiling (approx. 2 x 4 feet), making an “M” shape.
- Without lifting the roller off the surface, fill in the “M”.
- Smooth out the painted section in the direction of the unpainted section.
- Work your way towards the opposite side of the room, one section at a time.
- Proceed the same way for the rest of the ceiling.