In construction and finishing works, intermediate preparatory stages are very important, because the service life and reliability of the finished surface will depend on them. One of these steps is priming. Since all materials are different, and there is no universal means of processing, in each individual case they select their own special coating. Consider a deep penetration primer. In what cases are they used, how do they work, and what functions do they perform?
What surfaces need to be treated?
The surface to be repaired may consist of a variety of materials: wood, gypsum or cement-sand plaster , concrete. All of them have different conditions and properties, which can affect the adhesion of the finishing materials to each other and the further quality of the finishing service. In order to minimize the risk of peeling them from each other and in the best way to prepare the working surface, it is necessary to cover it with a primer according to the appropriate material.
Purpose and properties of deep penetration formulations
A deep penetration primer is used to prepare surfaces with various properties that can help improve the quality of the finish:
- increased water absorption of the base;
- fine porosity of the surface;
- a base containing sand and various mineral components;
- chalky soils, dustiness, etc.
The deep penetration primer reduces the ability of the work surface to absorb water, improves the surface properties of loose materials, making their structure stronger.
How to make a choice?
Which deep penetration primer is better? When choosing a material for surface treatment, you should not be inclined to the cheapest options. This is the case when the avaricious will pay twice: practice shows that the compositions of the lowest cost do not provide the necessary qualities for further work, the applied building materials do not have reliable adhesion to the base, the wallpaper peels off, and the plaster and other finishing coatings peel off the walls, ceilings, sexes. Reliable is a deep penetration primer, the price of which starts at 400 rubles per 10 liters.
In addition to the price, you should pay attention to the manufacturer - products of famous brands usually correspond to a high level of quality. Increased demand among large and individual developers are primers "Ceresite" and "Optimist". These compounds have high technical characteristics, as well as the optimal ratio of price and quality. To understand which deep penetration primer is better, pay attention to the description of the material, you can even find and read reviews.
Priming composition "Optimist"
Primer “Optimist” of deep penetration is made in Russia, perfectly adapted to the materials used in the country, climatic conditions and other features of the treated surfaces. It is suitable for use both outdoors and indoors. The basis of the primer is acrylic polymer, which provides deep penetration into the surface and good surface-adhesion properties. The composition includes antiseptic additives that prevent the development and growth of fungi, mold and other microflora.
Primer "Optimist" deep penetration is used to treat surfaces made of concrete, brick, cement-sand plaster, drywall, wood. Moreover, the composition should be applied before each subsequent stage of decoration, which will ensure reliable adhesion of materials. The applied primer layer, after drying, becomes transparent, colorless, evens out the absorption capacity of the surface and reduces the consumption of applied paintwork, water dispersion and plaster compositions.
This product is also used to dilute water-based paints.
Technical characteristics of the optimist deep penetration primer
- Entering the surface: 1-5 mm.
- Consumption depending on the surface condition: 100-250 ml / m 2 .
- Drying time: 2 hours.
- Without smell.
- Liquid composition color: white.
- Application conditions: in rooms with air temperature and working surface + 5 ... + 35 ° C.
- Storage conditions: in the original packaging, unopened at a temperature of + 5 ... + 30 ° C for up to 1 year.
The product has many quality certificates.
Ceresit Deep Penetration Description
Primer "Ceresite" is also popular among builders. The products of this manufacturer are high-quality, has a complex improved composition, is produced according to German technologies.
The primer is used for all surfaces with an absorbent base: walls, floors, ceilings. Increases the adhesion of the working surface, binds dust, strengthens the base. Prevents drying of thin leveling compounds, promotes better spreading of floor coverings and eliminates the appearance of bubbles on the finished surface.
Primer "Ceresit" works well with strongly porous substrates: it penetrates into their structure in the best way and strengthens it as much as possible. Moreover, for such cases, the emulsion is diluted with water in a ratio of 1: 1 and applied in several layers, if necessary. Due to its composition and ability to penetrate deep into the surface, the primer dries for a long time (4-6 hours). When used on gypsum and wood boards, the drying time is increased to 24 hours.
The main technical characteristics of the primer Ceresit
- The composition is based on: acrylate copolymers.
- Solution color: light yellow.
- Consumption depending on surface absorption: 100-200 ml / m 2 .
- Drying time: 4-6 hours (in some cases up to 12 hours).
- Application: at air humidity not more than 80% at a temperature of + 5 ... + 35 °.
- Storage: in the packaging in a closed form at a temperature of + 5 ... + 35 ° C for not more than 12 months.
Comparison of the compositions "Optimist" and "Ceresite"
Which deep penetration primer is better: Optimist or Ceresit? It is difficult to answer unambiguously, since a specific area of application is more suitable for each, despite their universality. Analyzing the technical characteristics of these samples, it is difficult not to notice: Optimist is more suitable for surfaces that do not have high porosity, which the German representative can better handle due to his more complex adapted composition. For example, when preparing a concrete base for flooring.
For ordinary surfaces made of bricks, blocks and plaster, any deep penetration primer is suitable. Their consumption per m2 is the same for one layer, if we compare the coatings with the same porosity. It is the base structure that affects this factor.
In many cases, a single deep penetration primer is used for the entire object. The price in this case is important: "Optimist" costs from 400 rubles / 10 liters, "Ceresite" - an average of 550 rubles / 10 liters. These are average indicators implying optimal product quality. There are also expensive premium formulations.
Primer for metal surfaces and wood
Before painting wooden elements and metal, the foundation should also be prepared. For this purpose, a special primer was developed in Russia, GOST 25129-82 gives its description. The composition brand is GF-021. It is made by different manufacturers, but they all adhere to Gosstandart.
Primer GF-021 has a general industrial purpose, is a paint and varnish material. Provides uniform coating.
Main technical specifications:
- color: red-brown;
- consumption: 60-100 g / m 2 for single-layer application;
- drying time at a temperature of +20 ° C: 10-16 hours / layer.
Before use, the primer must be mixed, diluted with white spirit. During operation, the room must be ventilated. The composition should be stored in a tightly closed container away from sunlight.
When choosing a primer GF-021, look for the inscription GOST 25129-82 on the packaging. In this case, you will purchase a product made according to the standard. The inscription TU indicates that the manufacturer has made changes to the composition, which may affect the final properties of the coating.
Which deep penetration primer is better? Choose the compositions carefully, read the technical specifications, use your or someone else's experience. Choose a material suitable for specific conditions, then the result will surely please.