Peeling paint: how do you fix it?

When the paint no longer manages to adhere sufficiently to its support, chipping occurs. This is the phenomenon by which the paint peels off and comes off in the form of scales. Immediately, the painted surface appears unsightly, aging and poorly maintained, yet sometimes only a few days or weeks after the coat of paint. Why does this phenomenon occur and how can the problem be solved? Here are some explanations and tips.

Why is my paint peeling?

You put your whole heart into it and yet, after only a while, your paint is peeling. It is very often matt paints that undergo this phenomenon, due to the fact that they are more permeable than satin or glossy ones. This is why ceilings, which are usually painted matte, often bear the brunt of chipping. To be able to remedy it, it is important to know the causes and they can be multiple.

What elements cause chipping?

To answer it in a very general way, we can say that a paint flakes or blisters because of a lack of preparation of the support and of taking into account of the surrounding elements.

Poor preparation of the support

Before applying a paint, an undercoat is always necessary. Its purpose is precisely to “roughly” cover the current color so that the color of the new paint gives back all its shine, but also and mainly to promote its adhesion. But before applying any coat or undercoat, the substrate itself must be prepared. If it is a piece of furniture or shutters already painted or stained, sanding will be essential. In general, to ensure a final quality rendering, it is necessary to paint only on clean, degreased, dry, uniform and dust-free surfaces.

Too fast drying

It is not possible to paint all the time. For the application to be perfect and the result to be optimal, the paint must be able to dry gently. If too much heat causes it to dry too quickly, then its good performance over time will be impaired. Above 25 ° C, it would be better to postpone your work.

High humidity

Too high ambient humidity in a room will cause the blistering or bubble effect which will also lead to flaking. If the humidity is explained, for example in a body of water, it will be necessary to make the choice of a water-repellent paint. If the choice of paint did not take this element into account, the blistering is explained, it is then necessary to sand and repaint with a suitable paint. On the other hand, if the humidity is not justified, then it is probably due to a more important problem (lack of ventilation, infiltration, poor insulation).

Poor quality paint

There is no shortage of paint brands in DIY stores, and making a choice is often more difficult than you might think. Choosing the cheapest which will generally be in the low end is not always a good deal. On the one hand during installation, this type of paint is often too liquid, which does not give hope for a final result worthy of a professional, and will earn you some tears of hair and names of birds by the way, and the promise to prioritize quality for your future work. On the other hand, these excessively liquid paints are in fact more loaded with humidity, and quickly lose their elasticity and therefore risk blistering and flaking quickly. If we want the work to last and not be undertaken too often, it is better to invest in quality products.

A bad choice of paint

You can opt for a quality paint, but if it is incompatible with the support or the environment, it will risk flaking quickly. For example, if you apply a water-based paint of the best quality whether on an oil painting, the oil of the latter will prevent your layer of paint from adhering properly and it will tend to slip on it. rather than covering it. So take the time to make the right choice, and do not hesitate to seek advice.

Pay attention to the underlying issues

You know what they say, it is better not to neglect the small problems which can hide real flaws. In the case of a wall that recursively flakes and always in the same place, it is likely that an infiltration problem is the cause. Humidity being a classic factor of chipping, a simple sanding and new paint will not be enough, especially since masking this type of problem which affects the solidity of the structure of the frame is certainly not the best option. solutions. Depending on the age of the structure, the ten-year guarantee may cover this type of defect.

What solutions to remedy it?

Solutions exist and everything depends on the scale of the phenomenon, targeted or widespread.

  • Scaling in a targeted area : If the paint is peeling off slightly in a particular place, it will suffice to proceed with a light scraping of the area, then sanding with an abrasive paper such as sandpaper to even out the surface as well as possible. If the chipping is too encrusted and the equalization is not possible, it will be necessary to apply a smoothing plaster with a spatula. Then, an undercoat and one to two coats of paint suitable for the support and voila!
  • Scaling over a large area : On the other hand, in the case of significant chipping over the entire surface, it will have to be sanded or stripped in its entirety to then repaint it with a quality paint, suitable both for the support and the environment. The process is the same as previously mentioned, on larger proportions, so sanding using a giraffe, ideally before painting.

Do not neglect the preparation

In the case of an underlying problem of infiltration for example, a treatment of the surface will probably be necessary before proceeding to the installation of a new paint. Before starting the work, remember to protect your floor from the scales that you will drop by placing a construction tarp. Remember that the scales in this case can be loaded with mold or even lead if it is an old paint. So be vigilant about the preparation precautions to be taken upstream, especially if it is a room. Wearing glasses, mask and gloves is also recommended in case of mold.

Call in a professional

If your paint is peeling, maybe it was not applied correctly or the necessary substrate preparation was not followed. If you can of course get busy with the task to make up for this miss, if the surface concerned is too large and scares you, or if the chipping occurs on a very old frame whose quality of the support and paint does not. is not proven, it may be better to call a professional painter who can identify the problem and fix it, or refer you to a qualified professional to restore the support and prevent it from happening again. Some professionals allow the customer to supply the painting himself and thus only invoice the labor. Be careful though to make the right paint choices. Calling on a professional also means making sure to apply a suitable paint of optimal quality.