|Ungru wall stone
UMK, i.e., a natural broken limestone
1.1.Made of weatherproof Ungru limestone,
which is broken mechanically (without
blasting) from limestone quarries in Ridala
rural municipality, Lääne County.
1.2.Ungru limestone is a mixture of grey
and yellow tones occasionally the
stones may also be in brownish-yellow,
yellowish-brown, bluish-grey and other
tones. The stones are with a layered structure.
Description of the product, dimensions
2.1.All surfaces and edges of U-wall
stone are either natural or broken.
2.2.The colour is mainly yellowish-brown
up to brownish-yellow, but there may be
occasional bluish-grey tones.
2.3.The selection of colour is not performed.
2.4.Standard dimensions: row heights
(thickness) 812 cm, 1220 cm
and 2030 cm. The edge lengths of
the stones are between 1550 cm (mainly
2.5.Broken stones with unsorted thicknesses
(630 cm) are also available for
2.6.The height differences within one
stone may vary up to 3 cm.
2.7.In the extent of 90%, the thickness
of the delivered material must remain
in the predetermined thickness range;
the thickness may be different in the
edges of some stones.
UMK 8/12 (U-wall stone with 812
UMK 12/20 (U-wall stone with 1220
UMK 20/30 (U-wall stone with 2030
2.9.The stones may not have consistent
cracks (NB! Not to be mistaken for the
grooves of mineral calcite!).
2.10. After installation there may be
some colour changes on the stones (brownish
lines around the stone), which will later
2.11. There may be a thin layer of clay
residue on some stones, which can be easily
2.12. U-wall stone is sold by cubic metre.
The amount of the material in pack (pallet)
may differ from that shown on the delivery
note up to 5%.
2.13. The pallet usually holds 1 m3 of
material. The pallet weighs about 2 tons.
Information that must be indicated
in an order:
3.2.Place of use either indoors
or outside, for building masonry or for
3.3.We recommend obtaining 1015%
more material so as to compensate for
the installation losses.
Possible places of usage:
4.1.For building fences and walls
4.2.In garden design, for establishing
rock gardens, etc.
5.1.We recommend ordering installation
works from Ungru Paekivi OÜ, who
will give a 2-year warranty to both the
material and the installation.
5.2.When performing installation works
yourself, we advise using lime mortar,
which is made of clean (washed) sand and
clean water. We do not recommend using
Portland cement, which may cause the stones
to change their colour.
5.3.Attention should be paid to make
a proper hydroinsulation for walls.