Basement waterproofing

Basement waterproofing protects the walls of the house from the damaging effects of groundwater. In the foundations of stone or brick is laid a layer of waterproofing, as a rule, to a height of 17-20 cm above the ground. There are several methods of waterproofing. You can use any of them.
1. On top of smooth, flat, dry part of the foundation put two layers of roofing felt or tar paper so that the seams on the ends overlap by about 16 cm
2. On top of the foundation is applied three-centimeter layer of cement mortar in the ratio of 1: 2. Layer leveled, covered with a layer of dry cement trehmillimetrovym and dried. Then placed on top of cement layer of felt or roofing.
Z. For waterproofing the basement so he is preparing mastic of bitumen and well-sifted hydrated lime in a ratio of 1: 0.5. Hot waxes applied to the surface in two or three steps so as to form a layer of 1 cm
4. On top of the base layer of asphalt mastic, which is glued a layer of roofing felt or tar paper without stone and sand podsypok. A layer of roofing felt or tar paper also covered with mastic, which is glued a second layer of rolled material.

Waterproofing basements traditional roll materials
Waterproofing and repair of structures subjected to the action of groundwater and surface water will be needed not only during the construction of the house, but during its continued operation.
It is well known that the concrete, stone and brick buildings in most cases are aggressive groundwater, which in turn leads to the following processes:
- Corrosion of the surface;
- Leaching;
- Disruption of the structure;
- Aging of concrete;
- Loss of strength;
- Deterioration of permeability;
- Loss of density.
The result is the complete destruction of the structure. To avoid this trouble to protect with special materials.
Conventionally the protective materials are divided into two groups:
- Traditional (rolled and mastic), made on the basis of polymer resins, polymers, bituminous mastics, etc.;
- Materials penetrating through minerals.
Currently, the most popular means of insulating materials are considered the second group, whose operation involves the penetration of the chemical constituents of the porous structure of the material structure to be protected and then fill the pores, hydrated so that the performance of the concrete over time only increased.
Often use basement waterproofing traditional materials. Perform it in several ways:
- Laid cement layer 2 W cm, align and dried, after which the plank roofing;
- From one of the heated pine resin and 0.5 parts sifted hydrated lime prepared paste, which is applied in hot form three layers of cement. The thickness of each layer should be not less than S mm. The upper part of the basement is covered with hot bitumen mastic and stick to it a layer of roofing material.
In homes with basement waterproofing is recommended to arrange a two-tiered: the first level is placed in the base of the basement floor level, and the second - in the basement, at 20 cm above the blind area, and the walls and floor of the basement isolated.
If the water table below the basement floor, the outside of the wall in contact with the ground is covered with bitumen. On the floor lay a layer of fat clay, compacted, covered with a layer of concrete, leveled and held for 14 days.
After this period the floor covered with a layer of bitumen and stick two layers of roofing material or other insulating material. The top is covered with mortar and iron.
To protect the design of the foundation around the perimeter of the house arrange scaffolding with a minimum width of 700 mm.

Waterproofing of foundations materials penetrating
The mechanism of the penetrating waterproofing materials can be considered on a case study developed on the basis of mineral mixtures "Hydrotex", produced in Russia. This material is unique in that it combines the traditional features and penetrating protective materials.
Before handling the dry mixture "Hydrotex" is dissolved in water and then applied to the pre-moistened, clean the dirt surface. The smooth surface is cleaning sand under high pressure.
Chemical agents waterproofing compounds (quartz sand and adjuvants) penetrate into the porous structure of concrete, which form insoluble fibrous crystals that fill the cracks, pores and capillaries of the concrete. As a result of compacted concrete structure shuts off the water (but not air).
The penetration depth of the material "Hydrotex" in the concrete structure is 100 mm, depending on the density of the concrete.
The main advantages of penetrating materials like mixtures "Hydrotex", as follows:
- High physical and mechanical properties;
- A reliable waterproof barrier;
- The use of both internal and external to the facility;
- Ease of use (even a novice builder will be able to use such funds);
- Environmentally friendly components;
- Non-toxic.

Seam waterproofing
Suture is used to protect waterproofing seams and joints of underground and aboveground structures from moisture. Waterproofing suture consists of cement, silica sand and activating agents. Sealing effect is achieved by chemically active ingredients, as well as increase of the volume.
Key Features seam sealing:
- Non-toxic;
- Can be used both on dry and on wet concrete surface;
- Compressive strength of 18 MPa;
- Waterproof - W10;
- Frost - 1200;
- High corrosion resistance.
The dry mixture is diluted with water at room temperature, thoroughly mixed and applied to the prepared surface.
The solution should be prepared in an amount which can be used in the next 30 minutes.
Noticeable cracks, chips or seams extend across the length and clearing a depth of 2.5 cm prepared surface moistened and then applied a coat of primer first, and a 5-b h - suture solution.

Waterproofing basement
In defense of the foundation from the harmful effects of rain and melt water needs not only the underground part of the basement, but the basement.
The cap is called the top of any foundation in height from 50 to 70 cm is made it concrete, brick or stone, that is, materials with frost and resistance to various weather conditions.
Structure must not only withstand the flow of water during melting of snow or rain showers, but also protect the walls of the basement of capillary moisture, prevent absorption of water's surface.
Waterproofing is usually performed in both planes - vertical and horizontal. To create a horizontal layer of waterproofing the foundation base and places its coupling with walls stacked roll waterproof materials.
To protect vertical surfaces of the walls several times smear them with bitumen. However, this method is only effective if the house is arranged on dry ground. The fact is that the life of asphalt is small, 3-3.5 years after he began covered with cracks, and fix it, unfortunately, is impossible.
Thus, it is better not to save on the construction of the basement and use of advanced materials for obmazochnoy waterproofing - such as, for example, water glass. Unlike asphalt this material does not lose its properties over time. In addition, when applying foundation on the wet ground, this option is the most preferred.
Often, as a waterproofing obmazochnoy use modern waterproof materials such as "Lahti" based on Portland cement and silica filler to hold water during hardening, increasing water resistance and speed up gripe.
In the process of this material should be applied on clean, dust-free and fat-free surface (it can be wet) with a brush or roller, a layer whose thickness is less than S mm. To increase the strength waterproofing 2 hours after the first coat should be applied to the second layer of the same thickness.
Waterproof cap can be made okleechnoy way. It is most effective when the water table is high and the project construction will be the basement or ground floor. In this case, around the perimeter of the foundation of modern protect rolled materials (stekloizol or geomembrane).

Currently, builders use another effective way to protect the foundation of the so-called method of penetrating waterproofing. He is: a wet basement surface is applied with a special compound which, falling in moisture-filled cracks and pores, crystallize and clog them. In this case, the formation of new cracks spontaneously process resumes. Effect of these substances continues as long as the finished surface active agents remain free protective compounds.
To eliminate leaks in concrete and use the so-called slug - a dry mixture based on hydraulic cement, fillers and chemical supplements. The principle of the slug is this: a few minutes after application to the surface it expands and blocks the flow of water.
It should be noted that before using the surface of the basement waterproofing material and existing cracks in it previously degreased and cleaned of various contaminants, and then expand a little crack and moistened with clean water. Slug is prepared as follows: 1 kg of powder is diluted 220 ml of water at 70 ° C, and carefully stir for 2 minutes.
The mixed solution was used immediately after preparation (you can not reuse it.) To do this, take a small amount of the solution and giving it the shape of a cylinder is pressed into the crack strong pressing hands where holding at least 1 minute. In that case, if the mixture is too thin, and turned the water flows much cap hold for 5 minutes b. Surplus solution was then removed. After sealing cracks penetrating the foundation surface is treated, and then seam waterproofing materials.
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