Definition and purpose of waterproofing

Waterproofing of facades and walls is a technical process aimed at protecting the exterior and interior surfaces of buildings against the penetration of water and humidity. This procedure is essential to preserve the structural, aesthetic and functional integrity of buildings, since water can cause severe damage such as corrosion, peeling of coatings, mold growth and deterioration of materials.

The main purpose of waterproofing is to create a continuous, impermeable barrier that prevents the passage of water and moisture, thus maintaining dry and healthy indoor environments. In addition, this technique contributes to improving the durability of buildings, reducing maintenance costs and preserving thermal and acoustic conditions.

Physical principles of water filtration

Water can infiltrate through facades and walls due to various physical mechanisms, such as capillarity, hydrostatic pressure, gravity filtration and vapor diffusion. Capillarity allows water to rise through small pores and fissures in the materials, while hydrostatic pressure acts when there is a pressure difference between the outside and the inside, favoring penetration.

Gravity filtration occurs when water slides across the surface or through cracks, while vapor diffusion involves the passage of moisture in a gaseous state through permeable materials. Understanding these phenomena is essential to selecting the right waterproofing system and ensuring its long-term effectiveness.

Factors affecting waterproofing

Various factors influence the effectiveness and durability of waterproofing, including climatic conditions, the composition and condition of the substrate, the quality of the materials used and the correct application of the systems. Facades exposed to heavy rain, sudden thermal changes and UV radiation require more robust and resistant solutions.