tiivistyslaasti

Tiivistyslaasti, often translated as sealing mortar or waterproofing mortar, is a type of cementitious mortar specifically formulated for creating impermeable barriers in construction. Its primary function is to prevent the passage of water and other liquids through porous building materials such as concrete, masonry, and stone.

The composition of tiivistyslaasti typically includes cement, fine aggregates, and specialized additives. These additives are crucial and often include polymers, silicates, and waterproofing agents. Polymers enhance flexibility and adhesion, reducing the likelihood of cracking. Silicates react with moisture in the substrate to form insoluble crystalline structures, effectively blocking pores. Other waterproofing agents further improve water resistance.

Application methods vary but generally involve mixing the dry mortar with water to achieve a workable consistency, similar to traditional mortars. It can be applied using trowels, brushes, or sprayers, depending on the product and the surface being treated. For effective waterproofing, multiple layers may be applied, often with reinforcing mesh embedded between layers for added strength and crack bridging.

Tiivistyslaasti is commonly used in applications such as basements, tunnels, swimming pools, water tanks, foundations, and wet rooms. It is an essential material for protecting structures from water damage, preventing dampness, and ensuring the longevity and structural integrity of buildings. Its ability to create a seamless, monolithic barrier makes it a reliable choice for demanding waterproofing situations.