Chamotte for
expert stove construction
Chamotte made by experts…
…for experts
Fireclay transforms a normal stove into an excellent stove:
…an efficient, safe, low-emission and durable heating appliance. No other material meets the specific wants and needs of stove fitters as well as fireclay – this applies to the furnace as well as to the flues and the outer shell.
Needless to say, the properties of our fireclay products comply with the German technical regulations governing stoves and air heating systems (TR-OL).
Properties of
our fireclay
- high dimensional accuracy
- easy-to-use features
- optimum heat storage and conductivity capacity
- high temperature change resistance
- food-safe
- high static load capacity
- sustainable & regional production
Our qualities & classification according to test results
| W3 | |
|---|---|
| Classification according to DIN EN 1457 Part 1 for pipes intended for dry operation | A1N1 i/i |
Explanation:
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| Classification according to DIN EN 1457 Part 2 for pipes intended for wet operation | B4P1 i/i WA |
Explanation:
|
Chamotte bricks and plates
Standard bricks and plates
for expert stove construction – from the furnace and flues to the outer shell
Vault bricks and baking stove plates
for individual baking stove construction – especially vaulted baking stoves and pizza domes
Double-groove plates
for covers, side walls and door lintels with extra stability
Chamotte brick hourdisboard
for covering stoves, as an outer shell and as a bench
Flue bricks
RUFUS ceramic heat saving register
as additional heat saving measure in hot-air stove, with a simple down-swept and upward flue
DINGO ceramic heat saving register
as additional storage capacity for combined stoves, with 8 options for flue input and output
Pipe fitting adapters
for horizontal or 45° connection, in various lengths, some with oversize
Cleanout opening and pipe connection
in addition to to our shaped bricks for ceramic flues
Tongue and groove flue shaped blocks
for the construction of free-standing flues – fast, material-saving and with a secure hold
Components for the stove shell
Support brick for outer shells
to connect the stove cover and wall without cracks; asymmetrical profile for different thicknesses
Clay brick hourdisboards
in areas with low temperatures and low temperature changes
Mortar and masses
Universal mortar PLUS
for the use in the furnace, for inner lining and for tiling
Universal mortar HKM
for the use from the furnace to the outer shell (above 4 cm wall thickness)
Hafner mortar B light
for installing ceramic materials
Chamotte mortar C
for installing ceramic materials in the furnace, for inner lining and for tiling
Universal mortar HM
for bonding robust outer shells, lining heating inserts and for installing supplementary ceramic heating flues
Hydro mortar 0-1mm
for installing ceramic materials and for bonding robust outer shells
Refractory concrete sealing compound / ramming mixture
for repairing furnace floors, stove construction materials, arranging tiles and modelling
Natural stove plaster
for plastering brick stoves, stove bases and stove hoods
Modelling plaster for stoves
for plastering brick stoves, stove bases and stoves hoods and for modelling mouldings
Glue
a fire-resistant glue for ceramic chamotte bricks
Sealing compounds
for bonding/sealing between materials with different levels of expansion
Acid putty glue
an acid-resistant mortar for fireclay chimney pipes, tested in accordance with DIN EN 13063
Insulating materials
Thermal insulation Wolftherm
for thermal insulation or as a replacement for primary walling and thermal insulation
Thermal insulation Promasil 950 KS
as thermal insulation as well as primary walling and thermal insulation
Furnace board Vermiculite
as a furnace cover or deflection
Biosoluble fiber material
as intermediate insulation and for sealing between materials with different thermal expansion
FAQs
Frequently asked questions about our fireclay
Fireclay is a purely natural material consisting of just three ingredients: clay, fired clay and water – nothing else. And yet not all fireclay is the same. Depending on the application, it has to meet very different requirements: sometimes it has to be particularly strong, sometimes particularly easy to work with, sometimes very fire-resistant and sometimes resistant to temperature changes, sometimes rather porous and sometimes rather dense. We guarantee this by mixing and processing selected clays very precisely according to sophisticated recipes, depending on the individual product.
Our fireclay is used where high temperature stability and temperature change resistance as well as a high heat storage capacity are required. For example, for wood-burning stoves (heat saving stoves, basic stoves, hot-air stoves, etc.) in the combustion chamber, the flues or the outer shell; but also for the construction of wood-burning baking stoves or pizza domes. Chamotte is also used to protect the metal walls in the combustion chambers of wood-burning stoves, boilers, heating inserts and chimney inserts for solid fuels. These are usually individually tailored bricks, so-called shaped chamotte bricks. The inner pipes of chimneys are also often made of fireclay.
Our high-quality fireclay is characterized by its easy-to-use features. A whole range of tools is suitable for cutting: from the chop saw, floor cutter, plunge saw, angle grinder, foxtail saw, hammer, grindstone and diamond stone up to the wet cutting machine. Are you interested in more details? We show all options with their respective advantages and disadvantages in this video: https://www.youtube.com/watch?v=3FOBacPhZtk&t=659s
If you would like to use fireclay in such a way that it comes into contact with food, for example in a baking stove, then we recommend our WKS, HBO+ and HBW qualities. They meet the requirements for materials intended to come into contact with food. These qualities are therefore ideally suited for the construction of baking stoves for stone-baked pizza or stone-baked bread.
HBO+ is our light red standard quality and gets its characteristic colour from our domestic raw material, which we extract ourselves locally. It is suitable for all applications in the field of tile stove construction – from furnace to fl ue construction and the outer shell. Application temperature: 1,200 °C, density: 1.9 kg/dm3
WKS is a light yellow fireclay whose technical properties are comparable to our standard fireclay. It additionally corresponds to Austrian standard B 8306. It is suitable for all applications in the field of tile stove construction – from furnace to fl ue construction and the outer shell. Application temperature: 1,200 °C, density: 1.9 kg/dm3
HSM massiv is a red-brown heavy fireclay. Its technical properties make it an exceptional heat storage material. In tiled stove construction, it is particularly suitable for the flues and the outer shell. Application temperature: 1,000 °C, density: 2.4 kg/dm3
Our manufacturing processes result in different surfaces on our fireclay bricks and plates. Extruded fireclay has wire-cut (rough) and smooth surfaces. Repressed bricks are smooth on all sides. Selected bricks and plates are available with a dovetail profile.
The fireclay from Wolfshöher Tonwerke is 100% “made in Germany”. With over 160 years of company history, we are one of the oldest manufacturers of refractory products in Germany. We have always produced the fireclay on the “Wolfshöhe” in Neunkirchen am Sand near Nuremberg. To this day, all departments of the company are located at the founding location in Franconia. The raw materials are also obtained locally, parts of them from the own clay pit. The entire manufacturing process is subject to strict controls by experts from our in-house laboratory – from the monitoring of the raw materials to the mixed compound up to the fired product. All parameters that affect the ceramic properties are inspected several times a day. Thereby, we constantly guarantee the highest quality.
Our fireclay is used where high temperature stability and temperature change resistance as well as a high heat storage capacity are required. For example, for wood-burning stoves (heat saving stoves, basic stoves, hot-air stoves, etc.) in the combustion chamber, the flues or the outer shell; but also for the construction of wood-burning baking stoves or pizza domes. Chamotte is also used to protect the metal walls in the combustion chambers of wood-burning stoves, boilers, heating inserts and chimney inserts for solid fuels. These are usually individually tailored bricks, so-called shaped chamotte bricks. The inner pipes of chimneys are also often made of fireclay.
Our high-quality fireclay is characterized by its easy-to-use features. A whole range of tools is suitable for cutting: from the chop saw, floor cutter, plunge saw, angle grinder, foxtail saw, hammer, grindstone and diamond stone up to the wet cutting machine. Are you interested in more details? We show all options with their respective advantages and disadvantages in this video: https://www.youtube.com/watch?v=3FOBacPhZtk&t=659s
If you would like to use fireclay in such a way that it comes into contact with food, for example in a baking stove, then we recommend our WKS, HBO+ and HBW qualities. They meet the requirements for materials intended to come into contact with food. These qualities are therefore ideally suited for the construction of baking stoves for stone-baked pizza or stone-baked bread.
HBO+ is our light red standard quality and gets its characteristic colour from our domestic raw material, which we extract ourselves locally. It is suitable for all applications in the field of tile stove construction – from furnace to fl ue construction and the outer shell. Application temperature: 1,200 °C, density: 1.9 kg/dm3
WKS is a light yellow fireclay whose technical properties are comparable to our standard fireclay. It additionally corresponds to Austrian standard B 8306. It is suitable for all applications in the field of tile stove construction – from furnace to fl ue construction and the outer shell. Application temperature: 1,200 °C, density: 1.9 kg/dm3
HSM massiv is a red-brown heavy fireclay. Its technical properties make it an exceptional heat storage material. In tiled stove construction, it is particularly suitable for the flues and the outer shell. Application temperature: 1,000 °C, density: 2.4 kg/dm3
The fireclay from Wolfshöher Tonwerke is 100% “made in Germany”. With over 160 years of company history, we are one of the oldest manufacturers of refractory products in Germany. We have always produced the fireclay on the “Wolfshöhe” in Neunkirchen am Sand near Nuremberg. To this day, all departments of the company are located at the founding location in Franconia. The raw materials are also obtained locally, parts of them from the own clay pit. The entire manufacturing process is subject to strict controls by experts from our in-house laboratory – from the monitoring of the raw materials to the mixed compound up to the fired product. All parameters that affect the ceramic properties are inspected several times a day. Thereby, we constantly guarantee the highest quality.
Fireclay is a purely natural material consisting of just three ingredients: clay, fired clay and water – nothing else. And yet not all fireclay is the same. Depending on the application, it has to meet very different requirements: sometimes it has to be particularly strong, sometimes particularly easy to work with, sometimes very fire-resistant and sometimes resistant to temperature changes, sometimes rather porous and sometimes rather dense. We guarantee this by mixing and processing selected clays very precisely according to sophisticated recipes, depending on the individual product.
Our manufacturing processes result in different surfaces on our fireclay bricks and plates. Extruded fireclay has wire-cut (rough) and smooth surfaces. Repressed bricks are smooth on all sides. Selected bricks and plates are available with a dovetail profile.
The main difference between the two materials is that fireclay stores whereas vermiculite insulates. The storage mass should therefore be made of fireclay. When it comes to thermal insulation, however, vermiculite has a clear advantage thanks to its thermal properties. A combination can skillfully be used in the furnace: a furnace made of fireclay supplemented by an intermediate ceiling or deflection made of vermiculite increases the combustion chamber temperature. With sufficient combustion air, this leads to particularly good combustion with low emissions. Are you interested in the topic in more detail? A detailed article can be found here.
