Construction Fireplaces and Stoves

They are used as constructional and non-structural lining of fireplaces, boilers and stoves.

Quality Group Of White Fireclay

The shaped refractory products are used as construction and non-construction lining of fireplaces, stoves and similar heating bodies

  • R-SKA extruded fireclay and R-SKA pressed fireclay

R-SKA grade stove fireclay products are shaped refractory products with high resistance to thermal shock and increased strength. Fireclay shaped products are manufactured by extruding or by pressing out of plastic mass.

  • R-SKA-D grade, stove fireclay products are shaped refractory products with high resistance to thermal shock.

The shaped products are manufactured by pressing from a semi-dry mass and they feature improved dimension deviation, out-of-squareness and warpage characteristics.


Refractoriness (min) 1 630 °C 1 630 °C
Al₂O₃ (min) 30 % 27 %
Fe₂O₃ (max)
Apparent porosity 28 % 24 %
Bulk density
1 850 kg/m³ 1 900 kg/m³
Cold crushing strength
15 MPa 15 MPa
Service temperature (max) 1 100 °C 1 100 °C
Resistance to thermal shocks (min) 25 cycles 25 cycles

Quality Group of Common Fireclay (RED)

The fireclay blocks R-SII and R-SI/CII are refractory shaped products manufactured by the plastic technology.

  • R-SI/Cll standardized and special shaped products are manufactured
  • R-SII standardized and special shaped products are manufactured

The blocks are intended for internal masonry, vaults and as parts of metallurgical, cement and glass industry building sets, for construction of fireplaces, stoves and similar heat appliances as well as standard building, structural and lining material.


Jakosti tvarovek R-SII R-SI/Cll
Refractoriness (min) 1 670 °C 1 710 °C
Al₂O₃ (min) 37 % 35 %
Fe₂O₃ (max) 2,6 % 2,5 %
Apparent porosity 25 % 23 %
Bulk density
2 000 kg/m3 2 000 kg/m3
Cold crushing strength
21 MPa 25 MPa

Refractory Mortar


refractory mortar is used, mixed with water, for joining refractory shaped building blocks exposed to stress by high temperatures. The mortar is designed for service temperatures of 1 000-1 400 °C. It is prepared by mixing with water and/or low water glass amount, if possible, a day before it is used.

Property MSG-1
Refractoriness (min.) 1 700 °C
Grain Size 0-2 mm
Adhesiveness after drying 40 N
Adhesiveness after firing 200 N
Optimum use of water/100 g mortar 20 l

Refractory Cements

Refractory cement is a refractory mixture of alumina-silica opening material with chemical and ceramic binders. The refractory cement is designed for general use at temperatures of up to 1 350 °C. It is supplied as a paste ready for immediate use. When exposed to air it hardens very quickly thus ensuring a very strong bond, immediately after drying, even at normal temperature. The high strengt his maintained through out the whole working temperature range thanks to the combined bonding present.

USE: Refractory cement should be applied as a substitute for ordinary fireclay mortars. It is used in thin layers for bonding and for building masonwork from fireclay blocks. It can also be applied as a protective layer, eventually for correcting damaged masonry it can be pasted by atrowel or, when watered down, even applied by painting.

KTS – Draught Chimney System

All blocks of this system are made from fireclay of R-SKA quality. Is primarily used for building draft channels in tiled heat accumulation stoves. They are a substitute for laborious construction of the system of channels from individual plates and especially increase the efficiency of stoves. During an authorized measuring was measured 85 % efficiency of this system. The system can be connected to different stove inserts.

The main partner in the distribution of refractory products for the construction of fireplaces and stoves – KRBY TURBO