Limestone > Linnakivi - Pärtli Paas OÜ

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We break limestone in the limestone quarry of the Pärtli Farm put into commission as early as in 1921

Next to Maardu Manor (16 km from Tallinn). The breaking layers of limestone differ from one another by both appearance and strength properties. During centuries building masters have learned to use various layers according to their properties and therefore also given them characteristic popular names.

The upper 10 breaking layers are yellowish gray slab-like stones with a thickness of 5 cm to 12 cm. The lower 11 breaking layers are whitish brown stones with thicknesses of 10 cm to 22 cm. Construction limestone is divided into 56 breaking layers in the Tallinn area. All the layers have different properties and therefore they have to be mined in layers when used as construction stone.

In the Pärtli limestone quarry we use the following 21 stone layers:






shot red	hard stone for terrace slabs, wall cover slabs for field use
variegated core	yields interesting patterns when sanded
stair-hard	extremely hard stair stone, weather resistant (stairs, slabs)
Saue layer	soft stone, suitable for room use
grey yard	known from ancient times as so-called “yard stones”, hard stone for pavement and terrace slabs, good weather resistance
white yard	hard stone for stairs and terrace slabs, suitable for all works where weather resistance is required
skin layer	brittle stone, no good for construction stone – suitable for crushed stone
fire layer	very hard stone, yields sparks when hit with a hammer, good construction stone
mud yard	brittle stone, no good for construction stone – suitable for crushed stone
hundredfold	brittle stone, no good for construction stone – suitable for crushed stone
cross layer	good construction stone, well suitable for hewing. Crosses were made of it in the Middle Ages
skin layer	brittle stone, no good for construction stone – suitable for crushed stone
nine inches	very hard and tough stone with high flexural strength, good construction stone
six inches	hard hewing stone, good construction stone
seven inches	soft hewing stone, good wall stone
four inches	hard stone, good construction stone for all works
five inches	hard stone, good construction stone for all works
bottom white	hard wall stone, lighter hue than the other layers
bottom stairs	hard stone, well suitable for field use
bottom red	hard wall stone, contains plenty of iron compounds that give a red hue to the stone when oxidising in air (especially well seen in the walls of Charles’s Church in Tallinn)

The upper surface limestone layers were used by our ancestors as long as 2,000 years ago in the establishment of dolmens.

Limestone as a construction material has a very long history. A good example will be the Old Town of Tallinn, where limestone has been used for more than 700 years, as we know it – in particularly large quantities in the 14^th-15^th centuries in the building of the Tallinn City Wall. Products of construction limestone were known in the Middle Ages as an export item, which was sold in Finland, Sweden, Prussia and later also in St Petersburg.

The average physical-mechanical properties of the construction limestone mined in the Pärtli limestone quarry are as follows:

volumetric weight 2,650 kg/m³ (EN 1936)

water absorption in weight percentage 0.9% (EN 13755)

porosity 2.6% (EN1936)

frost resistance 48 cycles (EN 12371)

flexural strength 17.4 MPa (EN 12372)

wear resistance 19.5 mm (EN 14157)

In order to decrease water absorption and thus to improve weather resistance, we recommend that you cover processed stone surfaces with protecting wax after installation. Protecting wax also reduces the soiling of stone surfaces.

Waxes with similar properties are offered by experienced companies MEPOL, LITOFIN, REMMERS.

Today we manufacture sanded and polished floor slabs, facade stone slabs with natural and broken surfaces, wall slabs with a broken edge, freeform pavement slabs, measure stone slabs with a planed surface for church floors and cover slabs with a natural surface cut to measure, all made of limestone.