8 common mistakes when painting walls
Most finish problems start before the first coat. Here is a short checklist before you begin.
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1. Painting an unsound surface
A new coat will not strengthen peeling old paint. Remove weak areas, repair defects, and only then move on to the primer and paint system.
2. Leaving dust and grease
Dirt reduces adhesion and coating uniformity. The wall must be clean and dry before the finish coat.
3. Ignoring uneven absorbency
Filled patches and old coatings can absorb material differently, creating areas with different sheen or coverage. Proper preparation and a suitable primer help make the substrate more uniform.
4. Choosing too much sheen for an uneven wall
The more actively a surface reflects light, the more visible waves and defects become. If the substrate is far from perfect, improve the preparation first or consider a lower-sheen finish.
5. Estimating paint from one average coverage figure
Coverage depends on the product and substrate. Use the wall area and the specifications of the actual paint, accounting for texture and number of coats.
6. Choosing a shade only on a phone
A screen is useful for finding a direction, but it cannot reproduce your actual light or wall material. Confirm the final color with a physical sample.
7. Checking the sample only in daylight
A room may be used mainly in the evening, when artificial light becomes the primary source. Check the color in the conditions in which you will see it every day.
8. Not reading the technical instructions
Drying times, permitted substrates, required primer, and coverage vary by product. General advice helps with planning, but the technical data sheet for the specific paint takes priority.
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