The water and dispersive putty is applied to work in rooms and outside. Differs in good adhesion, water proofness, fire safety. Finishing material can be applied on concrete, gypsum cardboard, brick, tree.
Water and dispersive putties became popular due to high utilization properties and the low price. It represents the means, ready to application, intended for preparation of surfaces for the subsequent finishing. Becomes on the basis of acrylic substances with addition of pitches. The last improve properties of putty.
The water and dispersive putty can be applied to alignment of the surfaces having different characteristics. It perfectly copes with cracks and undesirable openings. After covering, at respect for technology, ideally smooth surface free of defects turns out.
Advantages
One of the main advantages is the high plasticity. Material easily transfers temperature differences and shrinkable processes, keeping integrity. The put layer will not become covered by cracks even at sharp changes. Therefore material is applied both to external works, and to internal.
Water and dispersive structures do not contain solvents. Thanks to it there are no unpleasant smells or toxic allocations. One of components is the water evaporating in the course of hardening. The putty can be used for finishing of children's rooms.
One more plus are excellent water-repellent properties. When water evaporates, the strong polymeric layer is created. It does not pass moisture, prevents emergence of fungus and mold.
Treats advantages:
- high speed of hardening;
- simplicity of grinding;
- good vapor permeability;
- low level of heat conductivity;
- resistance to atmospheric actions.
Shortcomings
One of serious minuses is the impossibility of storage of material in the unpacked capacity. As soon as the putty comes into contact with air, process of its hardening begins. Because of it it is necessary to know for sure necessary amount of solution for work. Small dispersion perfectly is suitable for smooth surface, but can create serious problems at oshkurivaniye as the abrasive paper is quickly hammered.
The cost of some types also belongs to shortcomings. The good putty costs much, but buyers often highly appreciate quality of these novelties. Some types during creation of layer higher than 7 mm can shrink therefore for receiving thick layers of work are carried out in 2-3 steps. Because of it on preparatory work before finishing a lot of time can be required.
Technical characteristics
Key parameters of coverings are regulated by GOST 52020-2003. According to requirements, the dried putty has to give plain surface without poles and time. At the same time the share of volatiles has to make not less than 70%.
Treats technical characteristics:
- drying when drawing 2-4 hours;
- shrinkage is no more than 2%;
- possibility of drawing by thin layer without risk of appearance of defects;
- absence in slabogoryuchy composition of organic matter;
- density of structure is 1.5-1.8 g/cm;
- frost resistance of structure not less than 5 cycles;
- pH makes 7.5 - 9.5.
Thanks to technical characteristics the water and dispersive putty can be applied to finishing of tree, gypsum cardboard, bricks and surfaces from other structures.
Pay attention: many producers add chalk to structure. Its quantity has to be minimum, in the return case the structure will not serve long, the probability of creation of less strong covering appears.
If necessary the putty can be diluted with water in number of no more than 0.5% of the mass of material with the subsequent careful hashing. It is necessary to store material in densely closed container. The majority reckon warranty period of storage of 12 months. When defrosting the structure does not lose the properties. It is necessary to defreeze material at the room temperature not less than a day.
General rules of work with putty
Works are carried out at the air temperature not less than 8 degrees and relative humidity it is no more than 80 percent. For obtaining uniform structure after packing opening material carefully mixes up. It is possible to use for these purposes drill with the mixer.
As well as during the works with other mixes, before drawing putty it is necessary to carry out the works connected with primer. Exception are only surfaces which have been painted by means of organic paints. The concrete and plastered surfaces are grounded not earlier, than in month from the moment of construction of concrete surface. If it is going to process tree, then primer can not be applied.
Before works the surface is cleaned from dust and dirt. If there is growth of mold or fungus, then first of all disinfecting works are carried out. Primer is applied by means of the roller with short pile or spray.
Are usually used the palette to work with water-dispersive putty. It is necessary to put uniform layer of material which thickness should not exceed 1 mm. In 6 hours it is possible to put the second layer with the same thickness. When solution completely dries, it is possible to execute finishing finishing.
In conclusion we will note: if the structure is applied on other covering, then it is necessary to choose these two means from one producer. It is desirable to give preference to prepared for use solutions. In need of performance of work in rooms with high humidity it is better to choose types on which marking there is the corresponding instruction.