Bollingen Sandstone Stair

Bollinger Sandstein our own quarry

Bollinger Hartsandstein

- The traditional building material in use for centuries.

For generations removed from us at the Zurich upper lake near Uznach and processed, we know like probably no other of the merits and characteristics "of our sandstone.

Very similar gray sandstone weathering and consider:

Bollinger Switzerland Toscana II

3MPa" Compressive strength of 100 MPa 93MPa 3MPa

Water 2.2 2.4 5

Dowel outbreak 2000N 1862N N / A

Bending strength 7.3N/mm 7:14 2 n / mm 2 2 6.9n/mm

Binding tlw. calcitic clayey carbonate

Swelling 0.96 ‰ kA k.A.