2023 Author: Philip Bishop | [email protected]. Last modified: 2023-05-24 22:24
- Material advantages
- Fiberglass sticker
- Do I need to putty before painting
- Surface painting after putty
The use of a building material called fiberglass is one of the best options for high-quality and durable finishing of the interior surface of walls and ceilings. With its help, you can avoid the appearance of cracks, and the gluing process is quite simple and fast. At the same time, the painting of fiberglass sometimes causes controversy among the repairmen. Some experts believe that before this, the surface can not be putty, and the rest are sure that it is necessary to level the canvas before applying paint.
Despite the fact that fiberglass, or as it is also known in the construction industry, "cobweb", in a number of characteristics is similar to fiberglass, these materials have many differences. First of all, this concerns the manufacturing method. Unlike fiberglass wallpaper, fiberglass is not made on a machine, but by pressing, as a result of which translucent sheets resemble a "blotter". The material, usually produced in 50-meter rolls, is smooth to the touch, although it may chip a little. Details about the varieties of rolled fiberglass.
The strength of the "cobweb" is relatively small - careless handling can lead to its damage. However, the answer to the question of whether glass fiber is needed for painting is most often positive - due to the many advantages of using this material:
- After the correct gluing on the surface, the "spider web" from a fragile and fragile sheet turns into a reinforcing mesh, hiding small imperfections of the wall or ceiling and preventing new cracks and defects from appearing.
- The material is practically not afraid of exposure to liquid, fire, corrosive substances and abrasion.
- Fiberglass is not allergenic and does not accumulate static.
- The "gossamer" is easy to clean and allows water vapor to pass through during operation, ensuring optimal humidity in the room. And it is also a completely environmentally friendly material that does not emit substances harmful to humans into the air.
In fact, the material has all the advantages of fiberglass. Although it is not intended for final finishing, but only for surface reinforcement. In this case, you can paint the canvas several times, as opposed to wallpaper.
Before deciding whether it is possible to paint the fiberglass and putty it before this or not, the material must be glued to the wall. In this case, the surface to be pasted must be prepared - leveled with a putty, leaving cracks no more than 1 mm thick. It is possible to refuse leveling only in cases where the wall is already sufficiently flat and strong.
The main nuances that arise during preparatory work:
- wide cracks are repaired with a special compound for seams or ordinary putty, but in several steps;
- when using gypsum plasterboard sheets, the joints between them must be putty and reinforced with a self-adhesive fiberglass mesh ("serpyanka"); so that the already pasted wall is as flat as possible, it is desirable that the seams between the drywall and the glass fiber canvases do not coincide with each other, otherwise cracks may appear in these places;
- dried "patches" on the wall need to be leveled with putty and sanded until the surface is almost perfectly flat;
- before the spider web for painting is glued to the wall, it should be cleaned of dust and thoroughly primed.
Due to the fact that the glass cloth is glued with an overlap, when determining its area, not only the surface of the walls should be taken as the calculated value, but also a small margin (at the level of 5-10%). And as an adhesive, it is advisable to use not ready-made, but dry glue, the characteristics of which are the same, and the price is much lower. In the process of work, special clothing is used - pants, long-sleeved shirts, gloves, a respirator and a hat. All this will help to avoid getting fiberglass particles on the skin and respiratory tract.
Other nuances that are taken into account when gluing include the correct laying of the canvas. Fiberglass sheets have a smoother face - usually outside the roll. It is she who should look inside the room, while the outside should be applied to the wall or ceiling. You should also position the canvases so that the pile on them is directed in one direction. Otherwise, the paint applied to the material will have different shades.
The main stages of gluing glass cloth for painting are as follows:
- The roll is rolled out and cut into sheets of the required size, which is selected for the walls taking into account a small overlap. For the ceiling, it is recommended to choose canvases up to 1.5 m long, which are easier to fix on a vertical surface.
- Glue (prepared according to the instructions or ready-made) is applied in a thick layer to the surface, starting from the corner of the room. The width of the strip should be slightly larger than the size of the fiberglass itself, that is, about 1 m.
- The first sheet of canvas is glued end-to-end to the corner of the room, pressed with hands and smoothed with a wallpaper spatula along the entire length from the middle of the canvas to the edges.
- The excess part of the fiberglass is cut with a knife along the ruler.
- The canvas already glued to the surface is coated with glue until the material is completely impregnated. You can determine that the canvas is completely missed by its color, which should become uniform by the end of the procedure.
The rest of the sheets are stacked in the same way, but with a slight overlap on the previous ones. After gluing and aligning, both canvases are trimmed along the joint using a ruler. The trimmed parts are removed, and the resulting smooth seam is again greased with glue and pressed with a wallpaper spatula. When pasting corners, they try to get an even joint before trimming - the corner blade breaks more often than others, and an ideal cut will help to avoid tears and cracks.
After the room has been completely covered with fiberglass, it is left closed until the glue is completely dry. Usually this period lasts at least a day. At this time, drafts should not be allowed in the room, otherwise the movement of air will lead to lagging of the material and the need to glue or even re-glue it.
Do I need to putty before painting
One of the main advantages of using fiberglass is the ability to paste wallpaper or paint on it almost immediately. This raises the question, is it possible to paint the fiberglass without filler or is it still needed? In the first case, you can save time on drying the material that levels the walls, in the second, the quality of the finish improves.
Even professional builders disagree on whether it is necessary to putty the fiberglass before painting, but most of them advocate the use of putty for the following reasons:
- Due to its high absorbency, the color of the material will have to be done in several layers - usually from 2 to 5 times. At the same time, a huge amount of paint will be consumed and much more time will be spent than the refusal of putty will save.
- The fiberglass texture is noticeable even under 1–2 layers of paint. As a result, painting fiberglass without putty can ruin the interior of the room. The pores of the material are very difficult to paint over and after applying the next layer of paint they appear again. And only putty will help to eliminate this drawback.
- When painting fiberglass, especially located on the ceiling, a lot of small fibers fall on the work performer. And, rising into the air, they can be inside the respiratory system. The putty surface is not only easier to paint, but also safer.
- If, after the repair, it was decided to replace the paint on the walls with wallpaper, it is almost impossible to do this on an unpainted surface.
Given these disadvantages, it can be noted that it is undesirable to paint fiberglass without putty - unless in cases where a flat and smooth surface in a room (for example, in a household or utility room) is not too needed. However, using this material, even taking into account additional work, is still more profitable and more convenient than immediately putty ceilings and walls, skipping the stage of working with canvas. In the future, the surfaces protected by it will last longer, and the likelihood of cracking is practically zero.
Surface painting after putty
The main reason that the spider line is painted only after filling is the need to smooth out irregularities - villi and joints between the glued sheets. Unfilled joints become especially noticeable after painting. As a result of applying putty, the surface will become smoother, and defects disappear only with very careful work. Moreover, painting walls or ceilings after leveling with putty is much easier and faster.
It is important to take into account that when painting the fiberglass without putty, several times more paint will be required, since there is strong absorption, and you should not hope that the paint will mask the joints.
The main way to paint fiberglass consists of several stages:
- After the canvases glued to the walls have dried, a primer is applied to them.
- On top of the dried (usually 1 to 6 hours) primer layer, putty should be applied along each joint. Layer thickness - no more than 1 mm. As a result, a small consumption of material is provided, and a fairly flat surface, and a minimum drying time (about half an hour).
- When the putty layer dries up (a finishing compound is used to finish the fiberglass), the entire surface of the wall or ceiling is processed.
- Having reached the required number of layers and making sure that there are no irregularities, cracks or cracks left in the putty area, use sandpaper or a silicon mesh for cleaning. Then they carry out the last primer and start painting the fiberglass on the walls.
The painting process on canvas is no different from most other materials. To do this, use acrylic, silicone and latex paints, and as tools - rollers, spray guns and brushes. To obtain the maximum quality of the coating, it is advisable to paint the fiberglass in 2-4 layers and additionally treat hard-to-reach places with a brush.
As you can see, gluing fiberglass, painting and puttingtying the surface between these two processes is the only suitable option for obtaining not only strong, but also smooth and attractive-looking walls. At the same time, the work does not take much longer than the usual finishing of the enclosing structures, and the result is noticeably different for the better. The reasons for choosing the option without wall putty can only be the need to save money with a limited budget and low requirements for the quality of painting, since an attempt to obtain a high-quality result in this case will lead, on the contrary, to cost overruns on paint and loss of quality.