For most jobs, a standard white primer will be your best bet. That way, the new paint color will be able to stand out. A gallon of primer should be enough to take care of most painting projects.  Always use a primer when painting interior walls. Not only will it help the paint stick, it will also cut down on the number of coats you have to apply to achieve the same depth of color.  Primer is especially useful when painting a lighter color over a darker color. Apply an even coat from the floor to the ceiling, covering the broadest areas near the center of the wall. The base coat doesn’t need to be too thick—as long as it's smooth and consistent, the paint will sit easily on top of it. Try not to leave any bare patches, as this type of inconsistency can affect the final color of the paint. Work the primer into tight crevices and other hard-to-reach areas with the tip of the brush. Pay particular attention to corners, alcoves and the spaces around the trim and wall fixtures. Try to match the thickness of the rolled sections as best you can.  Apply the primer using long, smooth strokes, then smooth it out by brushing it in multiple directions. Remember to use your painter's tape for more precise lines and angles. Give the base coat about 4 hours to set. It should be dry to the touch before you begin applying subsequent coats of paint. It may be more convenient to apply the primer in the afternoon or evening, then wait until the following day to tackle the paint.  Painting over wet primer can cause clouding and smudging, effectively ruining the coat. Keeping your work area ventilated by opening a window or running an overhead fan or air conditioner will help the primer dry faster.
اشترِ علبة من الدهان الأولي. افرد الدهان الأولي على الحائط. استخدم فرشاة دهان بيد لملأ الفجوات. اترك الدهان الأولي يجف تمامًا.