Manufacturer of natural lime plasters, lime paints and dry mortars based on limestone from our own quarry.
Hessler Kalkwerke GmbH
WieslochNew on Amplifa
Natural lime building materials from our own production since 1881
Hessler Kalkwerke GmbH in Wiesloch is a fourth-generation family business that has been producing natural lime building materials from its own production since 1881. The company specialises in the manufacture of limes, plasters, mortars and paints – from natural lime base plaster through premium plasters, finishing plasters and tadelakt to casein and pit lime paints as well as lime-clay plasters with hemp. The binder natural hydraulic lime as well as limestone and quartz sands are extracted in the company's own quarry in Altwiesloch and processed at the plant into dry mortars with up to 90 % in-house production. The pure natural lime plasters are free of cement, gypsum, synthetic binders and preservatives as well as fully declared; since 2020 titanium dioxide has been omitted. Customers include the construction industry, monument preservation, biological-ecological building, agriculture (fertiliser lime) and the animal feed industry (feed lime). Products are continuously tested in the plant laboratory and by independent external monitoring (IQUH).
- Site
- Wiesloch
- Processes
- Production of natural lime (Natural Hydraulic Lime) from our own quarry, Production of limes, plasters and mortars (dry mortar), Plaster application (interior and exterior plasters, base plaster, thermal insulation plaster,, Machine plaster application with plastering machines (with thermal insulation plaster equipment), Production of plinth plasters (cement plaster) and lime-cement plasters, Production of masonry mortars (mortar group IIa and III), Production of wall paints (casein paints, pit lime paints, clay paints, silicate paints), Quarry extraction of limestone
- Materials
- Natural Hydraulic Lime (NHL), White lime hydrate, Pit lime, Limestone, Quartz sand, Limestone flour, Marble grit, Marble flour
- Certificates
- IQUH product test according to RL 0110-1
- Founded
- 1881
- Employees
- 15
- Industries
- Construction industry/Building materials, Monument preservation, Biological-ecological building, Agriculture (fertiliser lime), Animal feed industry (feed lime), biological-ecological building
- 01
Quarry extraction of limestone and sands
- 02
Lime burning in the company's own lime kiln
- 03
Production of dry mortars (plasters, mortars, paints)
- 04
Product testing in the plant laboratory and IQUH external monitoring
- 05
Distribution via a network of specialist retailers
Binders and raw materials
Natural Hydraulic Lime
Main binder from our own quarry, the basis of the natural lime plaster system.
White lime hydrate (calcium hydroxide)
Binder for base plasters, finishing plasters and paints.
Pit lime
Binder for pit lime plasters and paints for interior use.
Limestone/quartz sand
Aggregates from our own extraction for plasters and mortars.
Marble grit/marble flour
Aggregates for premium plasters, finishing plasters and marmorino.
Expanded glass
Mineral lightweight aggregate in the thermal insulation and base plaster HP 9PM.
Clay/hemp
Natural raw materials of the lime-clay plaster line with reinforcing and moisture-regulating effect.
Cement
Binder of the lime-cement and plinth plaster product line.
Dry mortar
Production process for plasters, masonry mortars (mortar group IIa/III) and other limes.
Plant and quarry
Wiesloch
DEPlant, administration, quarry (Altwiesloch)
- Materials
- Natural Hydraulic Lime, white lime hydrate, pit lime, dry mortar
- Lime kiln with cable car loading
- Hydraulic excavator Hyundai HL 770-9
- Wheel loader Volvo BM 425C
- In-house laboratory
Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Production of natural lime (Natural Hydraulic Lime) from our own quarryEngineering | – | – | – | – | Natural Hydraulic Lime, limestone |
| Production of limes, plasters and mortars (dry mortar)Plastics | – | – | – | – | Natural Hydraulic Lime, white lime hydrate, pit lime, cement, clay, hemp |
| Plaster application (interior and exterior plasters, base plaster, thermal insulation plaster,Surface | – | – | – | – | Natural hydraulic lime, white lime hydrate, pit lime, clay, hemp, marble flour, marble grit, quartz sand, expanded glass |
| Machine plaster application with plastering machines (with thermal insulation plaster equipment)Surface | – | – | – | – | lime plasters, thermal insulation plasters |
| Production of plinth plasters (cement plaster) and lime-cement plastersSurface | – | – | – | – | cement, lime |
| Production of masonry mortars (mortar group IIa and III)Plastics | – | – | – | – | lime, cement |
| Production of wall paints (casein paints, pit lime paints, clay paints, silicate paints)Surface | – | – | – | – | casein, pit lime, clay, silicate |
| Quarry extraction of limestoneEngineering | – | – | – | – | limestone, sand |
| Product testing in the plant laboratory and external monitoring (IQUH test)Testing | – | – | – | – | – |
| Production of fertiliser lime, feed lime and limestone flourPlastics | – | – | – | – | lime |
3 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Hydraulic excavator | Hyundai HL 770-9 | – | – | – | Wiesloch/quarry |
| Wheel loader | Volvo BM 425C | – | – | – | Wiesloch/quarry |
| Lime kiln (with cable car loading) | – | – | – | – | Wiesloch |
Additional services
Environment and quality
The products are continuously monitored in the in-house plant laboratory and externally monitored by the Institute for Quality Management and Environmental Hygiene (IQUH); the IQUH product test according to RL 0110-1 is valid until 04/2027.
| Evidence | Wiesloch |
|---|---|
| IQUH product test according to RL 0110-1 |
Company history
- 1881
Founded by the pharmacist Nikolaus Hessler at the Rot/Malsch location; first use of the self-burned Natural Hydraulic Lime on buildings in the region.
- 1940
Dr. Fritz Gramespacher acquires shares and later takes over the company completely; production relocates to Altwiesloch with new quarry premises.
- 1970
Decision to produce dry mortars in-house; since the mid-1970s HP 9 has been part of the product range as a pure lime plaster, from which the lime plaster system (HKS) was developed.
- 2020
Waiver of titanium dioxide in the natural lime plasters.