Bubble defect
If the places have relief with bubbles, then there are several possible reasons for such a defect. One of the most common is the application of paint on a wet surface, as a result of which it has not bonded to the surface. If the wall has been dry, it is possible that moisture has penetrated through the outer wall, and this can also lead to bubbling relief. Less frequently, this defect can occur if the wrong paint application tools are used or if the wrong application technique is used.
To prevent such a paint defect, the surface must first be sanded, then repainted, then sanded again and finally repainted.
Color cracking
If in some places there is a crack in the paint, which manifests itself in peeling from the surface, then the fault may be poor quality paint, too thin coatings, inadequate surface preparation for painting, as well as improperly treated seams.
The easiest way to turn this defect into an effect is to scrape off the peeling paint, then sand with sandpaper, prime and then repaint with the same paint. If this defect applies to walls or ceilings, the surface must first be puttyed and then primed.
Fine bubbles at the time of painting
If small bubbles appear in the drying process after painting, it may be due to poor quality paint, an old water emulsion or the application of too thick a layer on the surface.
In this case, the defects can be eliminated only by cleaning the peeling paint, puttying the surface, priming it, and then repainting with new paint. In this process, care must be taken not to apply the paint in a thick layer, and attention must also be paid to the shelf life of the paint. If the paint is glossy or semi-glossy, be sure to use a roller with a shorter tuft, and the surface must be well sanded.
Uneven paint coverage
If the surface is unevenly covered after painting, or the paint has not absorbed into the surface, then a roller that was too wet may be to blame, but the cause can also be the application of paint on the surface in different directions, which should definitely not be done. Uneven coating can also be caused by variable drying temperatures, which must also be taken into account in this process.
To avoid such situations, it is recommended to choose a high quality paint.
Variety of tones on the painted surface
Despite the use of a single color, a variety of shades may appear in places. The reason for this result is most often the use of a roller in larger areas, but the use of a brush in corners and narrower places, as a result of which the amount of paint is applied unevenly. This coating can be avoided when using a spray gun, but it is always better to paint smaller areas to keep the paint moist at all times. Another no less important recommendation – the paint should always be mixed in a one container before use.
Uneven paint leveling
If the paint coating looks flat when painting, a uneven coating may appear on drying, which may occur if the surface has not been properly prepared, such as being thoroughly sanded or degreased.
As well as if not completely dry paint is repainted, an uneven coating may occur.
Such situations will be easier to avoid if a good quality water emulsion paint is used, as it has self-leveling properties. Attention should also be paid to the roller used – the tufts should not be too long, and the brushes should be of good quality so that it absorbs the color well and evenly distributes it on the surface.
Traces of roller texture on the surface
If traces of the roller are visible on the painted surface, this is due to wrong use of the roller. It is not the case that any roller fits all paints and surfaces, so be sure to make sure the tools are appropriate in advance. It is also important to ensure that the paint does not accumulate at the ends of the roller, as this may result in an uneven surface. Important thing, when you are painting roller is moved in the direction from above, and should not be detached from the surface.
Paint flow after application
If defects with run-off paint appear after applying the paint, it is definitely due to too thick a coating, unsuitable weather conditions for painting (too hot or too cold) or the use of too dilute paint.
In such situations, the defect can be corrected by repainting the still wet place. If the door is painted, it is better to remove it from the hinges and paint in a horizontal position. Do not dilute the paint unnecessarily, and it is always better to paint twice, thinner layers as once thick coating.