Primer penetrating, description and scope
People who have never done repairs with their own hands, the question may arise - why do they need a primer? What are the uses for it?
Primers are designed for initial treatment of the substrate, before it is putty or painted. Thus, the primer serves as a binding component between the surface and the next finishing material( paint).It smooths out unevenness, increases adhesion and leads to subsequent uniform coating with paint or putty.
Deep penetrating primer consists of a mixture of acrylic polymers, designed to strengthen loose and weak substrates. That is, reduces their absorbency. This is necessary in order to strengthen the surface, as well as reduce the subsequent consumption of paint and putty. Such preparation of "whimsical" walls is a guarantee of quality and reliability of further painting works.
Intended for a deep penetration primer for walls inside and outside the premises for subsequent preparation for tiling, painting, putty, wallpapering. It is well suited for: gypsum plasterboard, aerated concrete, foam concrete, brick foundations. And also for many types of porous concrete, plaster.
It is highly not recommended to use this mixture for poorly absorbent substrates, as well as for steel surfaces and walls with any residues of bitumen and grease stains.
Primer for deep penetration: technical data
- Provides excellent adhesion of the surface and finishing material.
- Has a high degree of vapor permeability and water resistance.
- It has excellent antiseptic properties, so that mold and fungus do not appear.
- Withstands about 5 cycles of thawing and freezing, and the degree of freezing can reach up to -15 ° C.
- Deeply absorbed into the material, strengthening it. After drying, a clear, matt layer is obtained.
- Significantly reduces the consumption of subsequent finishing materials.
- Increases the resistance of the substrate to all-hazardous erasures( both mechanical and chemical).
- Provides air exchange in the room and does not isolate the pores inside the material.
Other characteristics and properties directly depend on the brand and country in which the material is made. For example, the ph level may vary from 7.0 to 8.0, the particle size( on average 0.05 microns) and other indicators. The most popular are Knauf, Ceresit, Moment. Plus, on sale there are dry mixes and ready to use. The first are stored much longer.
Application technology
Before applying a primer coat, it is important how to prepare the substrate. If it is a metal surface, it is cleaned of rust and the slag is removed. On wooden osnvaniya make a sweep from the hangnails, as well as shpatlyuyut cracks. In addition, the available grease and bitumen stains are removed with a special solution. As a result, a dry, even and clean base should be obtained.
Next, prepare the mixture according to the recipe, which is written on the package. Usually it is prepared in a ratio of 1: 1( mixture and water).Apply manually using a brush or paint roller, or with a spray gun. It is important that there are appropriate conditions for temperature and humidity of air. Recommended t is from +5 to +30 degrees.
Before starting work, it is necessary to wear rubber gloves. It is also important to protect your eyes from getting into the mixture. If this happens, it is worthwhile to rinse well with warm water.
Apply the composition in a uniform, continuous layer. If the surface is strong-absorbing, then two layers of the mixture are applied to it. In this case, the priming consumption depends directly on the substrate. On average, it is about 80-120 grams per square meter. Small parts can be processed - dipping them in a container with a solution.
Often the question is also of interest - how much does the primer dry? Drying time is completely dependent on the conditions( humidity and temperature), but it must take 24 hours. Subsequent finishing( painting or puttying) is possible only after the coating has dried.
In the event that the priming process was performed carelessly( without compliance with the technology) or the composition is not correctly selected, this can primarily affect the durability of the finish coat( bubbles or paint peelings will appear).