Bubbles in the brickwork

Cause 1: These may occur when aqueous spackle is applied in the exterior because the product is suitable only for interior surfaces. Correction: Remove by scraping all aqueous spackle. Apply Couvertek, repair paste for the exterior. Repaint. Cause 2: The repainting on poor quality paint or humidity in the new paint can seep into the older paint and cause bubbles. Correction: Scraping, sanding and removing the affected areas. Apply one coat of Pliolite / Multineuce Primer. Repaint. Cause 3: This occurs when the dust is not eliminated after sanding the putty or when the paint was not properly diluted. Correction: Sanding and scraping loose parts. Remove dust. Apply one coat of Pliolite sealer in the exterior; sand and repaint.

Calcination

These are spots that appear on painted surfaces, causing peeling or destruction of plastic paint.

There are generally two types:
Cause 1: The natural alkalinity of the quicklime and cement that makes up the plaster. This alkalinity, when in the presence of a certain level of humidity, reacts with acid in certain types of emulsion.
Correction: Scraping, brushing or sanding the surface, removing any loose parts. Apply one coat of Imperneuce and Pliolite primer. Apply finish.

Cause 2: The paint deteriorates due to weather conditions.
Correction: Scraping, brushing or sanding the surface, removing any loose parts. Apply a coat of Imperneuce and Pliolite primer. Apply finish.

OBS. In the case of new plaster, one must await for it to dry / cure (at least 30 days).

Cavities

Cause: These occur when unsuitable solvents are used in the dilution, or because of contamination of the paint or painting job material or surfaces because of grease, lubricants or water etc..
Correction: Remove all paint film and apply the paint system.

Separation

This is the stripping of paint from the surface together with parts of plaster, making it crumbly:
 

Cause: This occurs when the paint is applied on the surface of uncured new plaster or when there is humidity. Correction: Repair loose parts. Correct deep imperfections in the plaster. Apply a coat of Pliolite primer. In the case of plaster in a critical state, as a first solution apply a coat of Imperneuce. OBS. In case of new plaster, one must await for it to dry / cure (at least 30 days).

Efflorescence

Whitish spots appear on the painted surface
 

Cause: This happens when the paint was applied on wet plaster or due to infiltration. This is due to humidity migration from the interior to the exterior on new or old plaster walls, cement, asbestos cement, bricks, etc.., migrating soluble salts. Until the humidity and soluble salts have not been totally eliminated, the situation will continue. Correction: Eliminate any infiltrations. Wait for the surface to dry. Scrape the affected surface. Apply a coat of Imperneuce or Pliolite primer.

Corrugation

Whitish blemishes appear on the painted surface:
 

Cause: This occurs when the coats of paint are applied too thickly, or when the surface or environment where the application is done is too hot. Correction: Remove all paint and apply it again.

Microcracks

These are narrow, shallow fissures without continuity.
 

Cause: Insufficient hydration time of quicklime before the application of the plaster or thick layers of thin paste. Correction: Sand and scrape the surface, eliminating dust, loose parts etc.. Apply a coat of Imperneuce / Pliolite Primer. Apply three coats of Neucecril - 100% acrylic coating.

Yellowish stains on walls and ceilings
 

Cause 1: Fats, oils, cigarette smoke (nicotine) or pollution. Correction: Rinse the surface with a water solution and ammonia-based detergent (eg. Bleach). Let it dry. Repaint. Cause 2: In the case of a plaster surface, they are due to the extraction of soluble substances from plaster, from humidity. Correction: Sand. Remove dust. Apply a coat of Multineuce primer. Repaint.

Stains caused by raindrops

These are spots that appear on the newly painted surface due to isolated raindrops.
 

Cause: Raindrops cause the extraction of soluble substances that emerge and stain the paint film. Correction:Wash the entire surface with water. OBS. It is important that the washing of the surface be done as quickly as possible, as the spots disappear after a few days; the time for drying / curing the latex paint is 20 days.

Stains and delays in the drying of wood

Cause: This can occur when the painting was done on wood with caustic soda or remover residue used in the previous paint job.
Correction: Remove the paint. Wash the surface with water in the case of caustic soda. Wash the surface with water / cellulose diluent in the case of residue remover. Wait for the complete drying of the surface. Repaint.

Mold, mildew or fungi

These are spots that appear on the newly painted surface due to isolated raindrops.
 

Cause: These are a group of living plants which grow in favorable conditions, especially in warm and humid climates that are poorly ventilated and poorly lit. They produce the darkening of the paint film and decompose it. Correction: Wash the surface with the NEUCE Disinfect Solution, constantly wetting the surface with the solution for a period of 6 hours. Rinse the surface with water. Allow to dry. Repaint.

Saponification

These are blemishes that appear on painted surfaces causing undue delay to the drying of the enamels and oil paints, causing the surface to be sticky.
 

Cause: In case of new plaster, one must await for it to dry / cure (at least 30 days). Cause: This is caused by the natural alkalinity of the quicklime and cement that makes up the plaster. This alkalinity, in the presence of a certain level of humidity, reacts with the acidity of some types of resin. Correction: Remove the paint using paint remover and wash the surface with cellulose thinner. Apply finish. OBS. In case of new plaster, one must await for it to dry / cure (at least 30 days).

Cracks
 

Cause: In general, they are caused by the structural movements. Correction: Open the crack. Brush to remove dust. Apply a coat of Impersílico. Apply Couvertek exterior repair paste. Apply a coat of Pliolite primer, attached to nylon fabric. Apply three coats of Neucecril - 100% acrylic coating. Repaint.

Cracks and poor adhesion on wood

Cause: These occur when aqueous spackling is used in the correction of imperfections in the wood, as the product is suitable for the surface of the plaster.
Correction: Remove the spackling. Apply a coat of universal binder. Sand and remove dust. Correct imperfections with Oily Bitumen for wood. Sand. Remove dust. Apply a new coat of Universal binder. Sand again. Repaint.

Due to the size of the area

Cause: If the area to be painted is small or poorly lit, the darkening of the hue may occur due to lack of illumination.
Correction: If you cannot increase the ambient lighting, you will need to lighten the paint with white paint.

Due to ambient lighting

Cause: The lighting used can influence the final hue of the product. Some light bulbs are yellowish (halogen, incandescent), others have opaque colors (metal halide) bulbs and also light bulbs that can make the environment look reddish (mercury).
Correction: There is no downside to the product, so the solution is to change the light bulbs or even the hue used.

In continuous painting jobs

Cause: Due to older paint which is already dry or cured.
Correction: Not suitable for retouching or continuations of already dried or cured paints. A general coat will be necessary.

Lack of homogeneization

Cause: This is due to improper mixing of the material through the use of cylindrical tools.
Correction: Mix the product with a rectangular spatula beforehand and then continuously during painting. Do not apply the material too long after homogenization. If the item has already been applied and has blemishes, it will be necessary to apply a general coat.

Due to trimming

Cause: Trimming with products made with packaging from different lots. Trimming after the paint has dried. Dilute excess paint used as leftovers.
Correction: Perform the trimming before applying the paint on the wall with the product from that same packaging. Trim and fill, wall by wall. If there is already a difference, it will be necessary to apply a general coat.

Due to the absorption

Cause: Walls with different absorption levels may cause this difference of hue.
Correction: Apply a general coat to even out hues.

Product still wet

Cause: Compare the color with the product still in the drying process.
Correction: Wait for the material to dry for at least 24 hours in order to compare.

Due to dilution

Cause: If the dilution used in the product is more than what is specified on the packaging, the film formed by paint will become more fragile.
Correction: Dilute as indicated on packages.


Insufficient number of coats or short intervals between coats

Cause: If the number of coats is not enough, or if the interval between them is too short, the film becomes weak, and will be easily removed when cleaning.
Correction: Apply a general coat, respecting the interval and dilution indicated on the packaging.

Insufficient number of coats

Cause: Some hues and products require more coats. If few coats are applied, low coverage will occur.
Correction: Apply additional coats.

Due to homogenization

Cause: Use of a cylindrical instrument for homogenization or little homogenization.
Correction: Mix the paint with a rectangular spatula until the product is of a good consistency. Apply a general coat.

Due to the type of surface

Cause: very absorbent surfaces (new plaster, spackling paste, plaster).
Correction: If the product has been applied, it will require more coats. If it has not yet been applied, first apply the background listed on the packaging.

In Yellowish, reddish colors and with magenta pigments

Cause: Colors prepared with organic pigment based concentrates (yellow, red and magenta) require more coats.
Correction: Previous application of a white paint or more coats, or a mixture of white with the desired color for the first coat.

The use of inappropriate equipment

Cause: The use of long-hair rollers in water-based paints.
Correction: Use short-hair rollers.

Due to surface absorption

Cause: Application of acrylic or spackling paste to correct imperfections, leaving a porous surface. Correction: On places where there is correction with spackling paste or acrylic, apply a coat of paint with a brush and wait for it to dry for at least 4 hours. Immediately after, apply a coat of paint with a short hair wool roller.

Due to the roller in water-based acrylic paints:

Cause: These blemishes occur due to the use of a long hair roller which does not spread the product properly on the surface.
Correction: Use a short hair wool roller.

Non-dispersed pigments
Cause: Lack of homogenization due to the use of inappropriate tools or inadequate mixing.
Correction: Mix with a rectangular trowel. The duration should be enough for a complete mixing of the paint.

Color fading
 

Cause: Colors are too intense or saturated with dye, excessive dilution or insufficient number of coats can cause a natural wear and tear of the product due to long exposure to the weather. Correction: Re-apply 2 or 3 coats, respecting the dilution and application instructions on the packaging.

Difference in Brightness

This can occur when we apply a matte or satin enamel paint without the correct homogenization, which causes the paint film on the surface to be shiny. Therefore, when we get any type of paint, we should homogenize it properly with a rectangular spatula, and never with a screwdriver.

Difficulties in the application
The paint can become "heavy" for the application if it is not sufficiently diluted.

Runoff
Paint runoff shortly after being applied due to an irregular surface coverage.

Cause: excessive dilution and use of non-specified solvents, the application of a very thick layer, or application carried out in cold or humid conditions.
Correction: If the paint is wet, use the roller again on the location in question in order to even out the surface. If it is dry, sand the surface and apply a new coat of paint.

Difficulty in spreading
 

The paint does not spread along the surface, and there are visible traces of the roller or brush.

Cause: use of the wrong type of roller or a tool with little quality.
Correction: sand the surface and apply a new coat of paint, using short hair wool roller or a suitable tool.

Foaming Wood
 

This occurs when the painting is carried out on a very wet surface. Therefore, one should ensure that it is properly dry before painting. This can occur due to excessive dilution due to the paint or type of tool used.