Soapstone mining has been practiced for more than 100 years in Nunnanlahti, which is located in the rugged Northern Karelia region. Nunnanlahti soapstone became recognised during the Art Nouveau period, when architects favoured it for use as a façade material. The workability of soapstone made it easy to saw, shape or carve into all kinds of ornaments, which then graced important buildings in large cities. Thus all stones that contain talc got their name – soapstone. 

More than ten building stone mines were opened in Nunnanlahti. The stone was quarried almost everywhere and little attention was paid to its heat resistance or heat properties.

As building stone operations declined in the 1960s, a guild of oven builders formed and began to manufacture heat-storing fireplaces, continuing a tradition that began in the 1800s. Knowledge of the different soapstone varieties was essential for these oven builders. They moved from house to house, building heat-storing fireplaces that were the only source of heat at that time. 

Their professional skill and competence inspired Juhani Lehikoinen, the founder of Nunnanlahden Uuni Oy. However, the most important reason behind the founding of the company was the experience of his father, Tahvo Lehikoinen, in selecting the deposit and its unique variety of soapstone – MammuttiStone. 

The photo on the left shows Juhani Lehikoinen’s father Tahvo sawing soapstone. Forty years of experience gave him an intimate knowledge of the soapstone deposits and their stone varieties.

Nunnanlahden Uuni Oy and its subsidiary NunnaUuni Oy have systematically invested in research and product development. Material knowledge based on traditional fireplace building skills and scientific research is combined into strong industrial competence and stylish design. This enables continuous fireplace development for the benefit of the customer.

MammuttiStone is in good hands. But the best place for it is in the heart of your home.