Mineral resources and Exploration Energy supply and environment Land use and construction International GTK

Contact us

Tel. +358 29 503 0000
- Register office: gtk_gtk.fi
- Personal mail: forename.surname_gtk.fi

Offices and contact information

Land use and construction

GTK’s land use and construction segment supports public and private-sector decisions related to land use by providing user-focused materials and expert services, promoting land use solutions that consider economic and environmental factors in construction of urban growth centres, and supporting implementation of the Baltic Sea Strategy and the EU Marine Strategy Directive.

Construction rock material

Bedrock aggregate is aggregate cut from solid rock that is usually crushed and used for construction purposes. Depending on the use, bedrock aggregate can contain different kinds of fraction that can vary in size from fine grains to large boulders. Typical uses of bedrock aggregate include structure layers of roads and railroads and making concrete. It is becoming increasingly difficult to get high-quality esker aggregates, and it has lead to increased use of bedrock aggregates. The utilisation rate of replacement rock materials and secondary rock materials is also increasing. They include, for instance, recycled rock materials, demolition waste from the construction industry, and large volumes of gangue from excavation of natural stones.

Natural stone is stone used for construction. It is excavated from bedrock in large boulders and then refined mechanically into end products by, for example, cutting and polishing. The end products include tiles for outdoor and indoor use, border stones, stone blocks and dice-shaped stones. Stones are also used as details in interior design, fireplaces, table tops, decorative objects and environmental construction. The most common natural stones produced in Finland are granite, soapstone, and to a lesser extent, schists.

Natural stone
Our research helps to locate new deposits of production quality stone for industrial use, assess the resources and quality of production quarries and study the environmental impacts of the by-products of natural rock production. Read more

Rock material
We offer services in assessment of the quality and quantity of soil and rock materials, seismic scanning and other ground surveys. Read more


Map Services and Data

Maankamara-karttapalvelu    Read more


Construction rock material

More information on other sites

Infra Association (in Finnish)
Finnish Natural Stone Association