kalkkilaasteet

Kalkkilaasteet, also known as lime plaster or limewash, refers to traditional building materials made from slaked lime. This material has been used for centuries in construction for both decorative and protective purposes. Its primary component, calcium hydroxide, is created by heating limestone and then slaking it with water. The resulting paste can be mixed with aggregates like sand or even straw to form a workable plaster.

When applied to a surface, kalkkilaasteet undergoes a process called carbonation, where it reacts with atmospheric carbon dioxide to harden and form calcium carbonate, essentially reverting back to limestone. This natural curing process contributes to its durability and breathability. Kalkkilaasteet is known for its ability to regulate moisture, as it allows walls to "breathe," preventing the build-up of condensation and mold. It also possesses natural antifungal and antibacterial properties.

Historically, kalkkilaasteet was widely used as a finish coat on interior and exterior walls, providing a smooth or textured surface. It was often tinted with natural pigments to create a variety of colors. In modern construction, its use has seen a resurgence, particularly in heritage building restoration and in contexts where natural, breathable, and sustainable materials are preferred. Its application requires specific techniques to ensure proper adhesion and curing.