- Date: 05-05-2015
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- How to properly waterproof a foundation?
- Waterproofing of a monolithic foundation-slab
- Strip foundation and its waterproofing
- Do-it-yourself plastering
- Waterproofing the foundation of the house against capillary penetration
- Waterproofing of pile and column foundation
- How to properly waterproof a basement
- What material is not suitable for waterproofing
Concrete is the main material for laying the foundation. It is not subject to the damaging effects of water and serves as an excellent conductor, passing water inside the house. Moisture inside the house, in turn, creates an environment for the growth of fungi and mold. The foundation is often reinforced with a reinforcing mesh, which, under the influence of moisture, can be corroded. Such reinforcement can cause cracks, and the foundation loses strength and durability over time. Sometimes developers neglect. This may be done for the purpose of economy or negligence in construction. But in the near future, the residents of the new house will see with their own eyes the sad consequences of dishonest work. With improper waterproofing, the foundation, floor and walls of the house, basements, and roof begin to collapse. The list can be continued, listing almost all the elements of the building. A reasonable question arises, how to properly waterproof the foundation and other elements of the house.
To prevent the accumulation of moisture from the soil in the foundation and to prevent the destructive effects of mold and fungus, it is necessary to waterproof the foundation.
The waterproofing layer for any houses and buildings must be complete, without flaws and cracks. A protective layer is applied to the outer surface of the foundation, walls, basement, since it is from this side that the interaction of the house with moisture will occur. So how do you waterproof?
There are two types of water that can negatively affect the foundation. These include surface and ground water.
To protect against rain and melt water, builders use a waterproof blind area. And since it rains in all regions, the blind area must always be done. However, groundwater protection may not always be installed. On construction sites with waterproofing should be carried out mandatory. It is also necessary to take into account the rise of groundwater during seasonal warming. Therefore, foundation waterproofing is required if:
- Groundwater is located at a distance of less than a meter from the bottom of the foundation. If during a seasonal flood the water level rises a couple of meters higher, then the foundation can be treated with coating waterproofing. Thus, it is possible to reliably protect the foundation and walls of the house from capillary absorption of water into the concrete.
- Groundwater is located deeper than 1 meter. Here, a waterproofing layer is optional, but, taking into account the seasonal rise in water, the proximity of the river and the presence of drainage devices and blind areas in neighboring areas, experts advise making inexpensive coating waterproofing.
- High groundwater level. In this case, groundwater reaches the same level or above the bottom sole of the foundation. At the same time, high-quality and thorough waterproofing should be done, and a drainage system should be included in the foundation construction project. A drainage device on such soil is simply necessary, since water creates pressure on the foundation, while at the same time reducing the strength of the foundation on the ground. As a result, the foundation may shift, possibly even overturning it. Therefore, in addition to waterproofing, you need around the foundation. It will significantly reduce the level of groundwater and protect against excess moisture.
- Foundation construction on waterproof soil. Clay and loam with a layer of soil capable of absorbing water (sand) can be attributed to waterproof or water-permeable soils. Such soil does not allow water to spread from the site, but penetrates inside and begins to move, obeying the law of least resistance, towards the foundation.
- Aggressive ground water. It is necessary to know the composition of groundwater before building the foundation. Since aggressive water can simply destroy the concrete base, that is, lead to concrete corrosion. All materials for the construction of the foundation must make the foundation resistant to the aggressive properties of groundwater. The most dangerous are pressure aggressive waters that create pressure on the foundation.
All underground waters can be divided into suspended, non-pressure, low-pressure and pressure waters.
But this method also has disadvantages, which reduce almost all advantages to zero. Due to the low waterproofing, plaster can only be used in regions with a dry climate. This option is short-lived and rather unreliable, which is characterized by the appearance of cracks.
The use of a special solution.
Waterproofing the foundation in this way is quite high quality. A distinctive feature is durability. Spraying does not require any special skills.
You will need:
- solution;
- protection for the face, hands;
- spray.
The solution is carefully sprayed and after drying, the next layer is applied. You will need to apply 4-5 layers.
The main difference of this option is the penetration of the solution directly into the base structure. Penetration reaches 15 cm. Protection occurs inside, not on the surface.
However, the cost of such waterproofing is high. Thanks to this method, you will get really high-quality waterproofing of the foundation of the house.
