Plastic Sheeting

Covering or masking  film is especially relevant when a car is painted without a paint chamber and a plentiful spray of paintwork on everything that is not closed is assumed. Although in professional painting, the covering film is very much in demand. The film, this is a large size of the masked area, it is cheap, it is reliable. The quality of the masking film must be professional - it is very annoying when the film is torn when unfolded, when the solvent for paints dissolves it, when it is very thin and takes off at the slightest draft. High-quality professional masking films are always available in our online store.

Masking or covering film

Thanks to a special electrostatic treatment, the film is held firmly to the surface. In painting, masking  film is necessary all the time, especially in cramped workshops, where when the parts are primed, the spray is applied to a nearby metal.

Masking film for painting

Before painting, places and details that should not be painted are glued with special masking  and covering materials with a masking tape. This is an important step in preparing a car for painting. This process is also called masking the car before painting. Pasting before painting requires certain skills. It is important to carefully stick masking masking tape on the border with adjacent parts that do not require painting. This is one of the criteria for the quality of repairs.

There are only four main ways to mask car parts:

 1. Use masking paper (or newspapers) and masking tape.

 2. Using polyethylene covering material and masking tape.

 3. Using special templates of the desired shape and plastic covers (for wheels and other elements of the machine).

 4. Using special liquid masking compounds.

Note: Conventional masking materials may not work with water-soluble paints and clear coeats. Some materials may be soaked through. To work with water-soluble paints you may need special, designed for this covering materials.

covering film

Cleaning before masking

Before you start gluing the machine with any masking and covering materials, you need to thoroughly wash all surfaces and blow through each corner with compressed air. In order for the masking tape to adhere well and not to peel off when exposed to air from the spray gun, there should be no dust on the car and the surfaces should be dry. Cleaning before masking is, in general, a logical necessary step, since the machine must be clean before painting.

Masking tape

Masking tape for car gluing before painting should be purchased in stores with goods for body repair. It must be specifically designed for use with a spray gun. Construction masking tapes do not provide sufficient adhesion to the surface to withstand the effects of compressed air from the gun. In simple terms, a construction masking tape can peel off during painting and the paint will get to the place where it should not fall.

You need to choose a masking tape of good quality, a trusted manufacturer. In general, the quality of the masking tape for body repair depends on how it adheres, how it adheres, how well it behaves when gluing borders with bends. The tape should not tear when unwinding, leave no residue when peeling off, be flexible enough for gluing parts of complex shape.

Masking tape

Masking and covering material

Before gluing the machine before painting, special masking paper, polyethylene covering material and simple newspapers are used. Less commonly used is a special mask-leveling liquid.

Masking paper

Masking paper is sold in rolls of different widths. She does not pass paint and water, does not leave any residues behind her, well holds paint on herself. There are options with masking tape already applied to the paper. It is convenient to use such paper rolls in long sections. For example, to close the bottom of bumpers and sills.

Cover film

The polyethylene covering film is also of different sizes. It sticks to the surface of the machine due to static electricity, and also attracts dust and paint. It is very convenient to use when the body is partially painted, or only one element is to be painted. In this case, the necessary part is prepared for painting, and the rest of the body is covered with polyethylene covering material.

Newspapers are free cover material.

Unnecessary newspapers are free covering material, but not the best. They are quite capable of playing the role of masking paper, while some features of their application must be taken into account. Newspapers can leave fluffs, printing ink behind them and can be impregnated with liquid diluted paints and varnishes and skip them. Before using newspapers, they need to be blown with compressed air to remove from them all particles that can get on the body when painting. Contact of newspapers with a surface prepared for painting is not advisable, since printing ink can be smeared from the newspaper and remain on the surface. Newspapers should not be used when using water-soluble ink.

Liquid masking compounds

These are water-soluble protective compounds that, when dried, form a transparent film that can be easily removed with plain water. First, with the help of masking paper and tape, a small part around the painted area is framed and closed, and a special masking liquid is sprayed onto the rest of the car. To a certain extent, such compounds also protect the surface of the car from small sparks.

The use of masking, covering material and masking tape

In the room where the car is masked before painting, there should be a normal plus temperature (from +10 to +30 degrees Celsius). If the temperature in the workshop is low, then the masking tape may or may not adhere to the surfaces poorly. Condensation on the machine will interfere with the adhesion of masking materials.

The principle of sticking masking tape is very simple. One end is glued to the beginning of the border of the part adjacent to the body, with one hand hold the roll with masking tape and unwind it, and with the other, control the accuracy of adhesion and press it to the surface.

The masking tape itself is slightly elastic. When gluing a straight border, it does not need to be stretched much. From this, the stretched edges can subsequently peel off when sprayed, and the paint will flow under them. You can and should stretch the tape when you paste over the borders of bends and angles. Thus, a not very wide masking tape (for example, 19 mm) goes well around the rather complex borders of various parts adjacent to the body. First, the edges of the non-painted part are pasted over with a masking tape, then the masking material is glued on top with an additional tape. 

For sticking to the very edge of adjacent parts of different shapes, you can use a thin elastic masking tape (Fine Line Masking Tape). It is specially designed for easy framing of all kinds of bends. This is possible due to the high elasticity and small thickness of the tape. It is easy to stick it on the very edge of the masked part, and from above, without fear of "climbing" to the edge, you can stick a regular masking tape. This tape is also used to mask when drawing on the body of various inserts and strips of a different color. It facilitates masking, but also increases the cost of the process.

When masking, it is necessary that the covering material fit snugly against the machine and not hang out under the influence of compressed air from the spray gun. To do this, you do not need to spare the masking tape and glue every segment that can get onto the freshly painted surface. Each edge should be fixed with adhesive tape.

masking tape 

When covering the wheel arches together with the wheels from getting paint, you need to start by gluing half of the wide masking tape to the back of the edge of the arch. A lot of dirt usually accumulates there. During the preparatory washing of the machine, you must remember to thoroughly wash the inside of the wheel arches. After gluing half of the wide tape to the inside of the edge of the arch, the second half will protrude freely beyond the edge. You can stick masking paper or newspapers on it. Thus, all the outer edges of the arch will be open and available for coloring.

For a high-quality result, it will not be superfluous to mask the inside of the hood and trunk lid. When painting, the dust will fall there and there may be traces of repainting the car, which will be problematic to clean. The principle is that masking tape is glued to the edge of the back of the hood and trunk lid, and masking paper is glued onto it from above, again using masking tape.

masking film

It is very convenient to use polyethylene covering material to isolate unpainted areas. As mentioned above, it has the ability to adhere to the surface of the car and they can easily cover the entire part of the car, not subject to painting during partial painting. In addition, you can cover the entire machine with polyethylene covering material and then cut with a blade all segments that are immediately glued with masking tape to the car. It is necessary to pre-paste with masking tape all the edges of parts requiring masking, then put on top and straighten the covering film. Then cut and immediately paste the desired segments, and remove the remaining film. Many masters use this method of masking for painting. This requires some skill, but overall not difficult. The use of covering material to mask the entire machine has several advantages.

 The use of a covering film speeds up the work. Cutting the desired segment in place, you immediately glue it and the job is done. It is not necessary to glue several segments (as is the case with newspapers and camouflage paper, if its space is not enough), do not wrap and glue unnecessary folds of material.

 Reduces the amount of dust and dust when staining, as the film attracts dust.

 Less masking tape is leaving. For example, when pasting with newspapers, an additional amount of masking tape is needed in order to stick several segments on the glass.

 The cost of repairs. The covering film is not expensive and, as was written above, less masking tape is consumed.

How to make a smooth border from new paint to old?

When painting a car, a step forms between the different-in-thickness levels of a new layer of paint and varnish and the old unpainted surface at the border of the area pasted over from paint. To prevent the appearance of a sharp border, you can apply the technique with wrapping the edges of the masking tape.

masking film

The edge of the tape is not glued clearly to the border with the surface to be painted, but with a margin, that is, approaching the border, after which this edge is wrapped and glued. Thus, after staining, there is no sharp boundary between the transition from a freshly painted surface to an unpainted one. This is necessary when gluing openings. 

The edge of the tape is not glued clearly to the border with the surface to be painted, but with a margin, that is, approaching the border, after which this edge is wrapped and glued. Thus, after staining, there is no sharp boundary between the transition from a freshly painted surface to an unpainted one. This is necessary when gluing openings.

The edge of the tape is not glued clearly to the border with the surface to be painted, but with a margin, that is, approaching the border, after which this edge is wrapped and glued. Thus, after staining, there is no sharp boundary between the transition from a freshly painted surface to an unpainted one. This is necessary when gluing openings.

There is another trick that will allow you to create a smooth border when switching from painted front panels to the opening. It is necessary to twist the masking tape with a spiral into a tube, with the sticky part out, after which this tube can be glued to the edge of the opening. It fills the gap and after staining does not form a sharp border from the new paint to the old.

The method of wrapping masking tape is also used when priming repair “spots”. Masking paper or newspaper is glued with a masking tape not from a spot, but closing it, and then wrapped in the opposite direction. After priming, smooth borders are obtained, which are then very easily removed by grinding.

A more expensive option to make a smooth border is special self-adhesive foam rubber rollers for masking openings. They stick to the edge of the opening and fill the entire gap. When spraying, the paint is absorbed into the foam, without falling into the gap of the opening, and the formation of a sharp transition boundary from a new painted surface to the old is also prevented. Such rollers can be used not only in openings, but also in any other places where an inconspicuous transition is needed.

After gluing for painting, you need to go around the car and carefully inspect all masked places. Sometimes, masking tape at the borders of complex shape peels off a little. It is necessary to check all the edges and, if necessary, glue the tape again. Nowhere should there be gaps and non-glued segments where paint can get when sprayed.