Is it possible to putty the day after priming?

Home/Repair and finishing/How to properly putty walls after applying primer?

The process of applying putty to primer is very important. During repairs, a large number of people think about whether it is possible to apply putty immediately on the primer, because this can help save time spent on repairs. The primed surface must dry thoroughly in order to form a protective layer on the surface, which is why putty cannot be applied immediately.

How long should I wait between coats of primer?

You will need to wait 20 hours or more for this. An important criterion will be the air temperature in the room. Glypthal primer takes the longest to dry. This product may take more than 24 hours to dry.

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How to determine whether walls are ready for puttying

After the primer has been applied, you should carefully determine whether the wall is dry or not. On those surfaces that are porous, after 40 minutes, a visual inspection can determine that the wall is dry. But this is not true; such walls need to be coated with another layer of primer.

It is important that in order to understand whether the wall has dried or not, you need to touch it with your hand; if there is a film effect, then the surface is ready for puttying. If this effect does not occur and dust is found on the wall during inspection, then several more layers of primer should be applied.

Using these simple tips, even an inexperienced specialist will understand that a primer is required for many types of repair work. An important point is that the final drying time is indicated on the packaging.

Possible errors

If you leave a specific wall without a primer, then the likelihood that defective areas of the surface will appear will automatically increase. It is absolutely wrong to refuse this type of work in order to save money. This is absolutely not cost-effective, because the service life of even the most expensive coatings will be quite short. Very quickly the walls will again need expensive repairs. Using a primer pays for itself in the long run.

Do I need to prime the walls before wallpapering? Definitely yes! In this case, soil mixtures are also capable of performing a very important fixing function, and also significantly save the consumption of wallpaper glue. To achieve your goals, you need to choose the right mixture. Experts prohibit the use of polymer dispersions and water-based paints as primers.

List of tools for work

We will give a list of the most necessary tools for applying putty to various surfaces.

Tools for work

The fact is that the higher the quality, the easier it is not only to work, but also to study. Crooked and rough spatulas make it very difficult to apply putty even for experienced professionals, let alone beginners. The material is permanently glued not to the wall, but to the surface of the spatula, does not flow, the tool leaves behind noticeable marks, etc.

Currently, most craftsmen are switching to polymer putty; it is more expensive than usual, but significantly increases labor productivity. Due to this, the increase in cost has almost no negative impact on the construction estimate. What needs to be prepared for puttying?

1. Spatulas. There must be at least two: a wide one with a length of 30 cm or more and a narrow one with a length of 5–10 cm. The length of a wide spatula can reach 50 cm, it all depends on the skill of the performer and the characteristics of the wall. Using a short spatula, the material is applied to a long one, and the latter stretches it along the wall. It is not recommended to buy spatulas with a narrow blade; little material can be placed on them, you have to add it often, and this requires time and extra effort. Spatulas can have straight and shaped handles, parallel or semicircular side edges.
2. Ironing irons. The tools are much more convenient for work; the sizes and shapes of the handles are different. But learning to work with such tools is difficult; you can switch to them if you have practical experience. You will feel more or less confident after puttying 150–200 m2 of surface. Instead of a trowel, you can use a spatula for mechanized application, but this is a rather expensive tool.

The meaning of priming

Man began priming surfaces at the beginning of his historical journey. Artists were the first to do this - without a special primer it is impossible to put paint on canvas. The primed surface not only held the paint firmly, but also allowed the master to work comfortably - the base of the painting became dense and uniform in roughness. The same functions are inherent in modern primers. Padding:

• saturates the wall surface with moisture before applying plaster, which prevents it from taking water from the solution;
• creates a film with deep penetration into the wall (up to 1 cm), which significantly improves adhesion between its surface and the plaster;
• removes dust, including in places inaccessible to a brush or vacuum cleaner;
• muffles color spots on the wall (but not a transparent primer), turning its surface into a more monochromatic one, which is very important when wallpapering concrete;
• creates a smooth, easy-to-finish surface.

Advice from the experts

Experts recommend choosing a primer mixture carefully, taking into account the characteristic features of the surface being treated.

For example, a smooth concrete base requires the application of a primer containing abrasive particles that increase adhesion. They give the wall a roughness over which the putty can be applied much better.

Metal structures must be coated with a primer, and the mixture used must contain anti-corrosion components that prevent damage to the metal from rust. The wood is coated with water-based primers. They protect walls from rotting and excessive moisture for a long time. In addition, the formulations contain ingredients that protect against the negative effects of bark beetles and other harmful insects. New wood treated with shellac does not release resin, which allows you to maintain a uniform shade over the entire surface. Premises operating in conditions of high humidity are treated with compounds that provide an antibacterial effect.

It is recommended to treat plasterboard sheets with a primer mixture that has deep penetration. This will reduce the amount of materials absorbed into the wall covering.

Do I need to prime the walls after puttingtying and sanding them? Yes, since this measure increases the service life of the coating.

When purchasing primer and putty material, choose products from the same brand. Such forethought will allow all components used to maximize their performance and functional qualities.

What affects drying time?

The following factors influence polymerization:

1. Coating thickness. The larger it is, the slower the evaporation process in the mixture occurs.
2. Temperature. Excessively high and low rates negatively affect the drying process. The recommended temperature for applying the primer is +15… +30°C. Humidity should not exceed 80%. If the indicators are lower, then polymerization will take longer.
3. Composition of the mixture. If earlier it was necessary to use the same primer composition for finishing work, today, thanks to the rapid development of industry and wide technological capabilities, it is possible to use different types of mortar (for different purposes and tasks).
4. Best before date. Please pay attention to this factor before using the product. The drying time, adhesion and strength of the coating depend on the quality of the solution.

Why does putty bubble?

Sometimes the putty layer begins to bubble.

Another important question that is often asked is: “Why does the putty bubble after priming?” This effect may be due to several factors:

• too thick a layer of putty is applied;
• A wet wall was primed, then the soil dried out, and now the wall is drying. Acrylic primer allows steam to pass through, it comes out and blows up bubbles;
• the primer is not diluted correctly;
• the wall was poorly prepared and there was dust left on it;
• The humidity in the room dropped sharply. This happens when you start working in a cold room and in the process heat it up with a heater.

Apply the putty in a thin layer.

If you are sure that you first dried and prepared the walls well, selected the right primer and diluted it according to the instructions, then try mixing a “cooler” putty. In some cases, this measure helps.

Choosing a composition for different surfaces

Despite the same purpose, there are a large number of varieties of primer that are suitable for different substrates. If you neglect and do not take this condition into account, and use the material for other purposes, you can only do harm, and the finished surface will not be as ideal as you want it to be.

For wood

There are different types of primer, which is intended for treatment before puttying, which differ in penetration depth and composition.

This:

• Adhesive (alkyd). These are supposed to be alkyd-based compositions that require deep impregnation. The material consists of small particles. They are well absorbed into the wood material and harden in it, making the fibers stronger. These compounds are needed in cases where it is necessary to obtain adhesion between different types of surfaces.
• Acrylate (leveling). Such primers may contain polymers of latex, vinyl or styrene. The particles of acrylate primers are quite large and leave a significant dry residue on the surface. These types of primers are not absorbed, but are distributed over the surface and fill all its gaps. In this way, you can level out various defects and cover the material with an invisible protective film. This type of primer is relevant for further painting. With it, the surface is free from spotting and reduces the consumption of finishing material.

The advantages of soil mixtures for a wooden base are as follows:

• The ability to level the surface and hide defects;
• Extending service life;
• Possibility to save on paint and varnish materials during finishing;
• Giving an aesthetic appearance;
• Ensuring reliable adhesion between the main surface and a further layer of decorative material (paint or varnish);
• Protecting wood flooring from attack by mold, mildew and other diseases.

For concrete walls

Such a primer composition for putty should have an antiseptic and vapor-permeable effect. Under plaster, it is important to use a primer that penetrates deeply through such a hard and dense base.

A reliable soil composition for concrete assumes the following properties:

• Uniform application;
• Increased water resistance;
• Formation of a water-repellent layer;
• Deep impact.

From plasterboard

Drywall itself is a material that is far from finished. As usual, it is painted, bleached or covered with wallpaper and even tiles. Therefore, the answer to the question of how to prime walls before puttying is so that the finishing coating firmly covers the layer of finishing materials. In this situation, the composition improves adhesion and protects the material from various influences.

Important! Drywall primer is a must.

A primer that is suitable for drywall should have the following properties:

• When installing heavy wallpaper or tiles, it is better to use a composition that has deep penetration and improves good connection with drywall.
• If the repair is carried out in a room with high humidity, a moisture-resistant primer is needed.
• When the finishing coating is light wallpaper, a composition with surface penetration and fairly low adhesion properties is suitable.

Advice! In order to prime drywall, you can use a universal acrylic-based mixture.

This composition is characterized by high hygroscopic properties and good adhesion, and also does not contain toxins, has sufficient breathability and dries quickly.

The drywall primer must be compatible with the finishing material. Especially with paint, which can be added in small quantities to the mixture itself

Sequence of applying layers

It was previously explained whether it is possible to plaster over putty, but you need to know in what order the putty mixture is applied after priming and preparation. Use starting putty to eliminate unevenness. When there are large cracks, a reinforcing mesh is installed on them.

The dried layer should be sanded down. The surface is cleaned of dust, the treated areas are primed again, and the final puttying proceeds. Sanding and priming are carried out again.

The dried layer should be sanded down.

The nuances of puttying corners and slopes

Separately, it is necessary to describe the principle of working with corners and slopes. For easier processing, you can make a thicker layer, which is then leveled by sanding. The stage is difficult even for professionals.

The second option to simplify the work would be to apply the solution using a sealant gun, previously cleaned of the old composition. Or you can use a confectionery syringe, which is inserted into the gun, thickening is made using rubber linings and gluing with electrical tape. It works like this:

1. Putty solution is drawn into the selected tool.
2. Squeeze the putty out of the syringe into the crack in the corner; it is advisable to fill the entire void from top to bottom at one time.
3. Afterwards, the layer is leveled with an angled spatula, based on the base, just as plaster is applied to beacons.
4. When the layer dries, the protruding parts are sanded.

On slopes they work using an angle trowel, a convenient method. Sanding is also carried out. Evenness is checked by the rule.

On slopes they work using an angle trowel, a convenient method.

When can I paint, glue and putty?

The primer layer applies well to the putty and dries quickly, but still, experts recommend waiting until it dries completely, otherwise the wallpaper will wrinkle or bubbles will appear. On cement-sand plaster, the impregnating mixture sets in 2-3 hours, and on cement-lime plaster you need to wait 4-6 hours, but putty can be started before it dries completely. It's also worth remembering:

1. Primed putty walls should be painted after complete polymerization.
2. Painting with old paint is done after the mixture has polymerized; in this case, the old paint will not peel off.
3. Painting on plaster without putty requires covering with a primer composition in at least two layers, and each layer is applied to the completely dry previous one; it will take at least a quarter of a day to be completely ready for painting.

Ceiling preparation

Before priming the ceiling before puttying, it must be properly prepared.

If partial repairs are being carried out, then the floors, furniture, doors, and windows should be covered with film. First, the old coating, dust, dirt are completely removed, and loose plaster is removed. Seams and cracks are unraveling. Then you need to clean the base of the ceiling very well. Next, existing oil stains are degreased. You should also seal all large depressions, cracks, and remove bulges.

If the ceiling is wet, it must be completely dried. To do this, use a fan heater or simply ventilate the room. The ceiling for priming must be dry before puttying.

Varieties of mixture

Not all primers are suitable for use on drywall surfaces. Some mixtures are produced for outdoor use, and the installation of gypsum boards is typical for interior spaces. At the moment, there are such solutions and let's find out which primer for gypsum plasterboard is best suited:

1. Acrylic - a universal mixture used for various substrates
2. Alkyd – designed for wood structures
3. Phenolic – for processing metal and wooden elements
4. Perchlorovinyl - refers to universal mixtures that are intended for outdoor use
5. Griftal – only external walls can be treated
6. Polystyrene - there is a degree of toxicity, so it is better to use for external bases

From the above, it becomes clear that for drywall it is better to choose an acrylic primer. Before you buy a mixture, read its label and instructions - most manufacturers indicate for which surfaces their solutions are suitable. When you need a primer for drywall under wallpaper, choose colorless mixtures - they do not turn yellow, unlike white solutions. Ceresite is no exception. The same position should be followed when purchasing primers for drywall for painting. Colorless primers are called universal.

Important! A beginner can try blue and pink compositions. Such solutions make it possible to properly prime surfaces, and the changed shade of the coating will let you know which areas were missed during processing. The type of finish will not change if you decide to glue tiles or thick wallpaper.

There is no need to dilute the water-based emulsion; after purchasing the material, you can apply it yourself. Penetration of the primer occurs instantly, after which no traces remain on the surface. The norm for a strengthening solution is to create a glossy film.

What determines the time for complete drying?

The drying process depends on certain factors:

• room temperature. The soil takes a long time to dry if the room is too hot or cool;
• the thinness of the applied layer speeds up the drying process;
• the primer mixture contains special additives that quickly evaporate from the wall surface;
• The drying time is affected by the structure of the walls. If the primer penetrates deep into the pores, it takes longer to dry.

In most cases, manufacturers indicate information about the constituent components and the time required for final drying of the mixture. In addition, the type of material used affects the drying speed. Acrylic compositions dry for at least five hours; alkyd mixtures will take much longer - up to a day. Griftal compositions take a long time to dry - you have to wait more than twenty-four hours. A water-based primer requires the least amount of time - after applying it, work can continue after twenty minutes.

Continuing to figure out how long after priming you can putty, here are a few rules that must be followed:

• a stable optimal air temperature is maintained in the room;
• drafts are eliminated.

It is prohibited to artificially accelerate the drying process.

Why do you need to prime?

When starting to paint special ceiling tiles, the ceiling must be primed. There are several important reasons for carrying out this procedure.

1. Priming the ceiling and walls can significantly reduce paint consumption and also prevent the occurrence of unsightly stains.

   
   Consequences of an unprimed ceiling

2. The primer provides the best quality of adhesion of the ceiling surface to its finishing tile coating.
3. The final coating of the ceiling - paint or tiles - thanks to the use of a primer will be much more durable, reliable and durable.
4. Preliminary priming of the ceiling and walls helps to ensure that the paint coating used becomes less susceptible to the negative destructive effects of moisture.

Based on everything said above, we can safely say that priming the ceiling with your own hands under tiles, painting or wallpaper is absolutely necessary - this is by no means a luxury, but an important necessity.