How to degrease the surface before painting

How to degrease the surface before painting How to degrease the surface before painting - rules and tips

Each surface before painting or even carrying out the rest repair work must be free of grease. Surface treatment should be understood as the process of removing any type of dirt - glue, dust, emulsions, grease, old paint residues and simple dirt. Means and ways of degreasing the surface before painting metal and other surfaces are varied, and most of them are easy to use at home.

Pollution is very different - with a low concentration, the amount of impurities will be 1 gram per square meter, and with a strong concentration, more than 5 grams per square meter. Whatever the degree, it is important to degrease before carrying out repair work.

If this is not done, then dirt and grease will reduce the adhesion of the finishing material, which means that the quality of work will be low. It is not important to count on the duration of the product's use - it will be small, and for the same reason, the use of degreasers for processing wood, glass, metal, plastic and other coatings is mandatory.

The need to degrease the surface

Means for performing the degreasing procedure

If the owner of the apartment wants to paint the surface in apartment / house / cottage, for degreasing you will need any good product that should be applied to a lint-free microfiber napkin, as well as other suitable materials. This method will not work, and if preparation is required for painting the car body. Naturally, it is better to trust a professional who can do the job at a high level when cleaning and painting a car.

In certain cases, it will even be possible to remove a film of fat, protect the car body from corrosion with your own hands.

White spirit

How to degrease the surface before painting Almost every car lover has an organic type of white spirit solvent, and it is used constantly in repair shops. White spirit is required for the primary treatment of bodies, and after it, it is practiced to apply alcohol in a mixture with orthophosphoric acid to remove residual contaminants. The solution will be prepared by combining the substances in the correct proportion. With the help of such a substance, you can safely clean car parts, and the composition will not harm the metal surface.

The low cost has become an additional advantage, but from the disadvantages we will single out a sharp aroma. Some car owners will be able to replace the solvent with trichlorethylene, but it should not be used on aluminum alloys - there is a fire.

Acetone, gasoline, other analogues

All the products mentioned in the list are excellent solvents for fat, paint and mastic. Kerosene and diesel have a fairly dense structure, they are difficult to clean off, but the composition is perfect for degreasing.After using gasoline, kerosene and solvent, you will need to apply increased rinsing in order to eliminate all traces.

It is better not to use acetone for treating cars - certain types of it can harm the metal.


Here we are talking about a colorless liquid, a remover to remove fat, silicone and oil. Such a substance is intended to remove dirt from aluminum, steel, stainless steel, zinc, varnish coatings. It should be applied to the surface, and then wiped with a dry cloth and paper towel. Work should be done with gloves, a mask, and the room should be well ventilated.


How to degrease the surface before painting with acrylic paint? Use an antistatic agent. It will be especially effective to do this on plastic, which is able to attract dust due to its ability to electrify. Remove the grease film, although it is difficult, and after the surface treatment with an antistatic agent, the task will become much easier.


In the composition of the funds of a similar group there are chemical detergents with an alkaline effect. They are able to wash away any dirt, including fat.

Usually they are used for everyday life. A roller is required to clean plastic or concrete prior to application. Before painting a car, alkalis should be used with incredible care, and after that the place will be thoroughly rinsed with water, then dry the parts. It should not be allowed to apply a large amount of the product, as well as terrible foaming.

Ultrasound and other methods

A new way of surface cleaning is the use of solutions together with an ultrasonic field.

The method is exactly suitable for degreasing small parts, in which the surface has irregularities, complex bends and includes different mechanisms (for example, watches). Due to the high cost for large products, the method is definitely not suitable. There is also a method of electrochemical degreasing, and it is carried out in bathrooms where gas and electrodes are supplied. The surface is cleaned by means of chemical solutions with the help of current, and this treatment is usually used in production as well as in industry.

How to degrease plastic

Plastics are one of the largest groups of materials that can accommodate various types of plastic.

For a number of plastics, acetone, gasoline, vinegar are perfect - other materials from such substances will immediately become unusable. Compositions of universal action also may not always be suitable for plastic. For car parts made of plastic, only special products are used that will be sold in appropriate stores and are suitable for rubber and plastic. In everyday life, you can try to apply white spirit to the surface, and an antistatic agent will be 100% safe, and most of the products will be perfectly defatted with vodka.

The procedure for removing grease from plastic prior to bonding is as follows:

  1. Brush off dust with a dry cloth, if necessary, remove large amounts of dirt and dry.

  2. Saturate an old soft cloth with solvent.
  3. Gently scrub the surface.
  4. If in doubt, you should first try scrubbing a small area of ​​the product.

How to degrease metal

In addition to dirt and grease, metal often contains paint, rust, residues of the agent (sealant). For metal surface treatment, you should choose white spirit, gasoline and acetone.

The procedure is as follows:

  • How to degrease the surface before painting Remove rust, residue paints, sealants with a grinder, grinder, manually or with sandpaper - by any convenient method (the bath in the house should be treated with a sponge for washing dishes with soda). Large areas should ideally be cleaned with an electric tool.
  • Soak a cloth in the solvent, treat the product to a perfect clean, or if the parts are small, you can simply submerge them in the solvent.
  • After perfect drying, you can use primers, paints. It is important to cover those areas that cannot be stained with double-sided tape.

And now a little about the processing of materials.

Products for wood

How to degrease a wooden surface before painting? Before painting, products should be cleaned with varnish and paint. To begin with, you should clean the wood as thoroughly as possible with a metal brush, sandpaper and a plane. The latter is used to remove the top layer, and if the paint will eat deeply, with high-quality work, you can not even degrease the surface. For wood, special agents are used, as well as universal-type solvents, and everything is applied with a roller.

Gasoline doesn't even make sense to use. After applying the composition, you can easily clean the surfaces, and then start painting.

Glass degreasing

Acetone, alcohol, or any other solvent is suitable for glass products. Such chemicals will not harm such a material, but before gluing the glass, you can take any universal type solvent.

Pre-bonding agents

The choice of degreasing agent for the materials to be bonded will depend on the specific materials used.

It can be standard household chemicals, alcohol, alkali, and organic solvent. Isopropyl alcohol is suitable for rubber. The main thing is that the products should not be applied to wet surfaces - when in contact with water, many substances can give an unpredictable reaction or become ineffective. There will be nothing difficult in degreasing and further gluing, as well as coloring products.It is important to familiarize yourself with the required information, buy a suitable type of solvent, and then all the work will be done with high quality and also without consequences.

After the end of degreasing, a little water should be dripped onto the surface - if the liquid is flat and spreads, then the cleaning is ideal.