Waterproofing "Mapei": scope and composition
The company "Mapei" is an enterprise,which acts as a world leader in the manufacture and sale of building materials. She began her work in 1937 in Italy. Already today the concern owns more than fifty plants, which operate in different countries around the globe.
In the product range of the company you can findmore than 1000 items, which allows you to solve the most difficult tasks in construction. As an example, the waterproofing "Mapei", which is intended for professional use, can be considered. Materials for waterproofing this brand are:
- epoxy waterproofing;
- bitumen waterproofing;
- waterproofing cords and ribbons;
- polyurethane waterproofing;
- waterproofing on a cement basis.
Waterproofing "Mapei" excellently recommendedthemselves in the construction of various structures, swimming pools, as well as buildings for residential and industrial purposes. Materials can be used for indoor and outdoor insulation of basements, foundations, bathrooms and shower rooms, as well as communication channels, balconies, shower cabins and terraces.
The material acts as a reliable protection fordifferent structures by type of plaster, gypsum boards and ceramic tiles. Waterproofing "Mapei" has found its wide application in the field of industry, it is used for insulation of concrete surfaces of tanks, transport facilities, chimneys, concrete and brick tanks, and reservoirs for drinking water. The described waterproofing can excellently protect concrete, which has become covered with cracks in shrinkage. This can occur as a result of infiltration of water or under the influence of aggressive agents, as well as in contact with sea water and salt.
Waterproofing "Mapei" - is a two-componentcomposition, among the ingredients of which is component A and liquid component B. In the first case we are talking about a mixture of fine-grained aggregate, special additives and cement binder, while in the second case we are talking about synthetic water-dispersion polymers. To obtain a homogeneous mass, the components must be mixed, and the solution can be applied to vertical and horizontal bases using a spatula.
Synthetic resins in the composition have an excellentquality, therefore they retain water resistance and elasticity under arbitrarily difficult conditions, which is true even if the pressure reaches 1.5 bar.
The mudproof waterproofing "Mapei" has a high elasticity, perfectly adheres to different surfaces, among which:
These characteristics in conjunction with the stabilityto solar radiation allow to apply the material even in industrial regions, the conditions of which are characterized by air pollution. Quite often the waterproofing of this manufacturer is also used in coastal areas, the air of which contains a large number of salts.
Varieties of waterproofing "Mapei"
Waterproofing "Mapei" two-component differsno shrinkage, it can be used without first applying a primer. The material is represented by two varieties, each of which has a special purpose. If the surface is exposed to negative or positive effects of water, the work should be carried out using the Mapelastic Foundation. But for bases that are under the influence of a positive water pressure, Mapelastic Smart is usually used.
Recommendations for use
In order to achieve a positive resultWhen using the described waterproofing, it is recommended to apply it in a thin layer up to 2 mm. If you increase this figure, then the elasticity may be impaired. Do not start work if the thermometer has dropped below +8 ° C.
The solution does not need to add extraneousingredients by type of water or cement, and after application, the layer should be protected from water ingress. Such recommendations must be adhered to during the day. "Mapei" - waterproofing, which can be used to work with flat roofs or terraces.
Nuances of use
If they are not planned to lay the tile, then the surfaces should be complemented with deflectors, one will be enough for 25 m2. However, the final number will depend onWhat is the humidity level at the surface. These actions are recommended for waterproofing surfaces that are highly absorbent. Among them, you can highlight screeds, lightweight expanded polystyrene or expanded clay.
Waterproofing "Mapei", the application of which shouldto be carried out in accordance with the instructions, is applied to pre-prepared grounds. Care should be taken to ensure that the surface is free from damage and cracks, and that it is firm and clean. Before the beginning of the work, the base is moistened. Preparing the solution, the liquid component must be placed in the container, adding a dry ingredient. The composition is mixed using a mechanical stirrer, which is set to low speed. This condition is important to exclude saturation of the solution with air bubbles.
The mixture is stirred for a few minutes untiluniformity, the powder on the bottom of the vessel should not be precipitated. Before filling the pump with a solution, it is important to make sure that there are no lumps in it and it is completely homogeneous. The application can be carried out by means of a spray gun or manually operated. The viability of the waterproofing will last for 60 minutes. All subsequent layers should be applied only after the previous ones have dried, the thickness of the layer should not exceed 1 mm.
In addition to waterproofing "MAPELASTIC"
Increasingly popular in recent timeswaterproofing "MAPELASTIC". "Mapei" - two-component waterproofing, which can be purchased for 4500 rubles. For this cost you will receive 32 kg of material that is resistant to anti-icing salts, CO2, chlorides and sulfates. Use the material to process retaining walls and precast concrete elements that will be buried in the ground.
Quite often the material is used forThe surfaces, which were plastered with compositions on plaster and cement basis. Suitable material for waterproof plywood, as well as plasterboard. It is applied in 2 layers of waterproofing two-component "Mapei". Rostov-on-Don offers this material for the above price.
In the first layer it is necessary to lay reinforcingA mesh that is resistant to alkali. The second layer can be applied after the first one dries. At the interfaces, a waterproofing tape is glued, whereas in places of pipe and drains' outlets waterproofing plasters are adhered. In the first case we are talking about the connections of the wall with the floor or the wall with the wall. Reinforcing elements after drying the first layer are covered by a second layer of material. Once the surface dries, you can start laying the tiles.
Is a product for professional use waterproofing "Mapei". "MAPELASTIC" has the form of a gray powder with a specific gravity of 1.4 g / cm3. The characteristics are designed to use waterproofing at a temperature of +23 ° C, while the relative humidity should be 50% or less.
For mixing it is necessary to use the proportion of 3 to 1 (respectively, components A and B). Thus, 24 kg of the first ingredient will need 8 kg of the second.
Use the composition is recommended at a temperature of +5 to +35 ° C. After 28 days at +23 ° C the ability of the mixture to elastic stretching is achieved. At the same humidity should not fall below +50%.
If you plan to carry out manual application of the material, the flow rate will be 1.7 kg / m2. With the machine method, the flow rate increases to 2.2 kg / m2. "Mapei elastik" - waterproofing, which is notshould be applied by a layer thicker than 2 mm per layer. If waterproofing is used to repair the bases that will be in contact with drinking water during operation, after solidification, the material must be washed several times with warm water, the temperature of which is 40 ° C.
Additional recommendations for application
If you plan to protect the concrete with waterproofing,then its surface must first be checked for strength. The base is cleaned of the remnants of cement milk, and dust can be removed manually or mechanically. If there is a base that is contaminated with grease or oil, sandblasting or hydro-washing can be used for cleaning.
It is necessary to remove rust from the surface well,and the damaged parts are pre-repaired with special compounds. If you want to work with surfaces that absorb water well, then the substrate must be saturated with liquid before starting work. Waterproofing "Mapei", the mesh with which it is used, should be applied to surfaces that have been previously cleaned of paint, grease and wax, and if it is a cement plaster, it should be kept for a week for every centimeter of the thickness.
After completion of work, contaminated toolswashed in water, it must be done before the composition is hardened. If this has already happened, then the working tool is cleaned mechanically. It is not recommended to prepare the composition manually. This is especially true if large surface areas are to be treated.
When you plan to work by handwaterproofing, a smooth spatula should be used to form the first layer. The second layer should be applied in such a way that the total thickness does not exceed 2 mm.
When processing balconies, terraces and swimmingpools in a fresh first layer is installed a fiberglass mesh. The dimensions of its cells should be as follows: 4.5 x 4 mm. This mesh is recommended for application if there are large cracks on the surface, and also if the substrate is subjected to intensive loads.