Types of foundation waterproofing
The foundation is the base of any building. The reliability and durability of a house depend on how well it is built, but construction alone is not enough. The foundation must also be protected from moisture: precipitation, capillary rise and groundwater. This is why waterproofing work is carried out. Below are the main types of such protection and the features of common waterproofing materials.
Horizontal and vertical waterproofing
Horizontal and vertical waterproofing are the main approaches to protecting a foundation from moisture. The difference lies in which part of the base needs protection.
Horizontal waterproofing protects the lower or upper plane of the foundation and prevents moisture from rising into the walls. Roll materials, coating compounds, impregnations and injection solutions can be used for this purpose. The specific method is selected according to the building structure and operating conditions.
Vertical waterproofing protects the side surfaces and outer foundation walls from moisture coming from the soil. Bitumen mastics, roll materials, plaster-based mixes, liquid rubber and other coatings can be used. They differ in cost, service life and application method.
Types of waterproofing by material
In addition to horizontal and vertical waterproofing, foundation protection is often classified by the material used. Common options include roll waterproofing, bitumen mastic coating, plaster waterproofing, screen protection with clay-concrete boards and liquid rubber coating. The reliability of the entire protective layer depends on the material, so it is important to understand the features of each option.
Features of waterproofing materials
One of the most affordable options is waterproofing with bitumen mastic. It is relatively inexpensive, elastic and can form an even coating. At the same time, its limitations should be considered: bitumen coatings may crack in severe frost and soften at high temperatures. In a moderate climate, with proper application, such protection can last fairly long.
Waterproofing with roll materials, such as roofing felt or glass-fiber bitumen membranes, is also a relatively inexpensive and straightforward solution. Such material can be installed on different parts of the foundation to form a continuous protective layer. Service life depends on the quality of the substrate, correct installation and protection from mechanical damage.
Plaster waterproofing is less durable, especially under constant moisture and temperature fluctuations. It may crack, so in difficult conditions it often needs additional protection or periodic repair.
Liquid rubber forms a reliable seamless coating, withstands temperature changes well and is convenient for complex surfaces. Its drawback is higher cost and the need for special equipment or professional application.
More complex options include screen waterproofing, including protection with clay-concrete boards or bentonite materials. This method is more expensive and difficult to install, but with proper work it can serve for many years and reliably protect the foundation from moisture.
When choosing foundation waterproofing, groundwater level, soil type, climate, building structure, budget and material availability should be considered. Each type of protection has advantages and limitations, so the final decision is best made after assessing the conditions of the specific site.