CalchÈra San Giorgio

Research's Center and Materials' Formulation for Professionals in the Architectural Restoration

CalchÈra San Giorgio

Masters in the Treatment of Mural Structures

The structure of technological laboratories and production is patterned on research and creation of construction materials, in full compliance with the Tradition and the Rule of Art.

Our choice of pure and natural raw materials is based on construction history according to unwritten local tradition and practices passed down from generation to generation, and the best known nineteenth-century classical literature and manuals.

Our Material

Calchèra San Giorgio Research and Formulation Center studies and produces specialist materials for restoration, structural consolidation and renewal of buildings of historical interest. Our focus is developed according to project requirements, historic building techniques and local traditional materials which characterize the physical quality of the structure and its associated culture.

Every material we produce undergoes a production control, and meets CE marking certification, in compliance with Safety Requirements and EU Guidelines.

Some of the raw materials used in our formulations are:

  • Slaked lime powder with a very high calcium hydrate ratio;
  • Historical natural pozzolans of highest pozzolanic reaction;
  • Carbonate and silica sands, as in historical records;
  • Tufa powder and national sandstone;
  • Colored sands resulting from the crushing of local marble;
  • Gravel of different colors and size;
  • “Cocciopesto” of different color and thickness.

Pantheon Pozzolanic Lime Mortar was developed and produced throughout the years. Its formulation was obtained after a thorough investigation of Roman mortars found in the extraordinary and enduring momuments studied, and is the synthesis of all binders described in historical records: Calx intrita, pulvis baianus, testa tunsam, pumex, sabulum. This ancient but futuristic binder is perfectly compatible with any ancient historical structure, and is extremely versatile in the preparation of formulated mortars. It contains neither water-soluble salts, nor free lime, or any form of clinker, or other inaccurate material, as expressed in the “Rule of Art”. Pantheon Pozzolanic Lime Mortar is designed and produced by the Calchèra San Giorgio, and is the basis of all hydraulic-setting mortars employed in the composition of powder compounds.

Our Products

FormulationMortarConsolidationBindersRestorationFinishing'900


FORMULATION Line is designed to enable Project Architects to locate the most appropriate material to meet their project requirements. It is possible to request and obtain different binder and sand color materials, and reach different characteristics of thickness, weight, transpiring ability, resistance to compression and aesthetic outcome, depending on the intended use of the formulated product. FORMULATION Line can provide, upon request, products that are compatible with the building structures belonging both to different historical periods, and to different local cultures.

APPLICATIONS

The fields of application of the materials of our Masonry School of Art extend to:

Plasters of all types belonging to any tradition;
Specific mortar for archeological finds restoration;
Special plasters for renewal of masonries with rising damp damage;
Underwater archaeology;
Mortar for the restoration of mosaics;
Structural consolidation grout;
Light injection grouting for the process of reattaching damaged sections of frescoes, paintings and plasters;
Thin layer mortar of natural color for restoration of pieces of plaster missing;
Different types of coatings as in several local traditions;
Natural pigments stucco colors for stone restoration;
Formulation of any material required for the restoration of whichever masonry work is carried out in full compliance with the Tradition and the Rule of Art.

12 Rudus Intonaco AR30
RUDUS PLASTER AR30 - Designed to achieve distinct vapour permeability properties and for fair-faced masonry joints, made of natural hydraulic lime and lime-silica aggregates. Grain size 0-3mm. Specific for historic masonry buildings plastering and sustainable architecture.
12M Rudus Intonaco AR12
RUDUS PLASTER AR12 - Designed to achieve distinct vapour permeability properties and for fair-faced masonry joints, made of natural hydraulic lime and lime-silica aggregates. Grain size 0-1.2mm. Specific for historic masonry buildings plastering and sustainable architecture.
12MK Rudus Intonaco MAK12
RUDUS PLASTER MAK12 - Designed to achieve marked vapour permeability, high elasticity and adhesion properties, made of natural hydraulic lime and lime-silica aggregates. Grain size 0-1.2 mm. Used for historic masonry buildings plastering and sustainable architecture.
12A Rudus Muratura
RUDUS MASONRY - Mortar bed designed to fill, repair or seal joints of brick wall masonries, or natural stone with marked characteristics of vapor permeability. Made of natural hydraulic lime and lime-silica aggregates. Grain size 0-3mm. Specific for formation or reparation of masonry joints on historical buildings and sustainable architecture.
13 Malta Da Muro Strutturale
STRUCTURAL WALL MORTAR - Combination of natural hydraulic lime obtained mixing slaked lime and natural pozzolans of different grain size and reactivity, and selected silica aggregates. Resistant to chemical aggression. It contains no free lime. Suitable for: mortar bed preparation, protective coating system for exposed masonry, damaged mortar joint repairing. Characteristics of high-resistance without any addition of cement. Grain size 0-3mm.
13B Structura
Structural grout composed of hydraulic lime obtained by cold mixing of lime powder with a high titre of calcium hydrate Ca(OH)2 and natural pozzolans micronized at high energy; siliceous aggregates selected in continuous curve. Specific for the structural reinforcement of masonry structures with composite systems in inorganic texture. For restoration and rehabilitation of historic buildings and architectural heritage / monumental, where it requires the use of a natural mortar, compatible with the materials used in the past.
14 Stabilitura Alberina
ALBERINA WALL MORTAR FINISHING - Natural hydraulic lime mortar adding slaked lime in powder. Apply on internal or external surfaces. Grain size 0-0.7mm. To apply on porous and transpiring plasters for historical buildings and sustainable architecture renovation.
14B Stabilitura Sacile
SACILE WALL MORTAR FINISHING - Natural hydraulic lime mortar achieved by cold mixing high quality calcium hydrate and natural pozzolans and well-selected lime-silica aggregates with continuous granulometric curve. Internal or external application. Grain size 0-0.7mm.
14ST Stabilitura ST06
ST06 SETTING COAT - Thin mortar in powder obtained by mixing natural hydraulic lime with lime-silica aggregates. Internal or external application. Grain size 0-0.6mm.
15 Rasosasso
Particularly suitable for fair-faced masonries joints and for “washed finish” mortars. This product is also suitable to give surfaces the natural color of the matter. Internal or external application.Grain size 0-5mm.
17 Intonaco Pozzolanico
POZZOLAN PLASTER MORTAR - Designed to achieve distinct vapour permeability properties. It is a combination of slaked lime in powder with a very high calcium hydrate ratio, selected natural pozzolans, lime-silica aggregates, with continuous granulometric curve.Internal or external application. Grain size 0-3mm.
18 Intonaco Cocciopesto
COCCIOPESTO PLASTER MORTAR - Designed to achieve distinct vapour permeability properties. It is a combination of slaked lime in powder with a very high calcium hydrate ratio, selected natural pozzolans, tile or brick fired at low temperatures and crushed to a fine particle size (cocciopesto) and field silica sand, with continuous granulometric curve. Internal or external application. Grain size 0-3mm.
24 Intonaco Pozzolanico Deumidificante
POZZOLAN PLASTER MORTAR - Designed to force wall drying. It enables rising damp to dry out, speeding up evaporation conveyed through the masonry. It is a combination of slaked lime in powder, natural pozzolans of different specific surface area and activity, and silica aggregates, with continuous granulometric curve. It contains neither free lime, nor soluble salts. Due to its high porosity levels it is highly transpiring . Grain size 0-3 mm
25 Malta Deumidificante Antisale
DEMOISTURIZING SALT BLOCKING MORTAR - Mortar composed of slaked lime in powder, natural pozzolanas of different specific surface area and activity, and silica aggregates, with continuous granulometric curve. It contains no free lime. It also contains inorganic waterproof/pore forming compounds, reducing the capillary action, and giving the hardened mix a low water vapour diffusion resistance and defense against efflorescence. Grain size 0-3 mm.
26 Scudo Termico
THERMIC SHIELD - Plaster with low specific gravity, for thermal insulation of walls and floors. Composed of natural hydraulic lime and a mixture of low specific gravity amorphous silica with continuous granulometric curve. Grain size 0-3 mm.
01 Boiacca Iniezione Leggera
LIGHT INJECTION GRUT - Low specific gravity injection mortar made using a combination of slaked lime powder, selected natural pozzolans, and carbonate-silicate fillers. Used for consolidation of frescoes, vault plastering, and severe detachment of plaster.
02 Boiacca Iniezione 50
INJECTION GROUTING MORTAR 50 - Injection mortar made using a combination of slaked lime powder, selected natural pozzolans, and carbonate fillers. Specific for consolidation of historical plasters, frescoes, and wall painting.
03 Boiacca Iniezione 100
INJECTION GROUTING MORTAR 100 - Injection mortar made using a combination of slaked lime powder, selected natural pozzolans, and carbonate fillers. Used for structural consolidation of historical masonry.
04 Boiacca Iniezione 100 Gel
INJECTION GROUTING MORTAR 100 GEL - Injection mortar for structural consolidation of mortar core wall (“opus caementitium”) masonries or other similar renovation works. In case of need to control and contain grout leakage as in foundations and earth retaining walls.
05 Boiacca Iniezione 100 Antidilavamento
ANTI-WASH INJECTION GROUTING MORTAR 100Injection mortar made using a combination of slaked lime powder, highly reactive natural pozzolans, and carbonate fillers. Specific for the structural reinforcement of the walls with the presence of pockets of stagnant water.
121 Calce Pozzolanica Pantheon
PANTHEON POZZOLAN LIME - Hydraulic lime achieved from the combination of selected slaked lime powder, characterized by a high ratio of hydrated calcium oxide Ca(OH)2 = 98%, and pulverized natural pozzolans of different specific surface area and activity.
122 Calcesana
Natural hydraulic lime for historic restoration, obtained by burning marl in traditional kilns. Used for mortar bed and plaster upon historic buildings and sustainable architecture.
123 Grassello Di Calce
SLAKED LIME PUTTY - Pure slaked lime putty, Ca(OH)2 = 98%, free from impurities or additives. Specific for stucco, wall recomposition, scialbatura (white wash) and painting, different coating effects, and whatever may be subjected to carbonation.
124 Acqua Di Calce
LIME WATER - Saturated solution of calcium hydroxide, prepared through maceration of high ratio hydrated calcium oxide Ca(OH)2 = 98% slaked lime putty in pure water, and filtering off impurities or additives. Specific or colored wash preparations or superficial strengthening of powdery renders.
31 Malta rasante naturale
NATURAL LEVELLING MORTAR - Universal levelling mortar in powder with silica aggregates. Grain size 0-0.5 / 0-1.0 mm. Internal or external application. Specific for plaster levelling also upon old paint.
31S Smooth Stucco
Leveling mortar with siliceous and lime aggregates. Particle size 0 to 80 μm. Internal and external application.
32 Malta rasante di livellamento
SMOOTHING AND LEVELLING MORTAR - Universal levelling mortar bed in powder with silica aggregates, suitable for layering with siliceous aggregates. Particle size 0 to 1.6 mm. Internal and external application.
34 Maltina Per Ricostruzioni RIC160
RECONSTRUCTION MORTAR RIC160 - Mortar for ornamental restoration (reconstruction of edges, frames, ornaments, etc..). Particle size 0-1.6 mm. Internal and external application.
35 Maltina Per Ricostruzioni RIC100
RECONSTRUCTION MORTAR RIC100 - Mortar for ornamental restoration (reconstruction of edges, frames, ornaments, etc..). Particle size 0-1.0 mm. Internal and external application.
36 Maltina Per Ricostruzioni RIC60
RECONSTRUCTION MORTAR RIC60 - Mortar for ornamental restoration (reconstruction of edges, frames, ornaments, etc..). Particle size 0-0.6 mm. Internal and external application.
38 Stuccatura Pietra
STONE REPAIR MORTAR - Stone repair mortar for damaged, cracked, split, spalling stone surfaces on historic building repairs. Internal or external application.
41 Tonachino
COATING - Finishing powder made of lime, pozzolan, silica sand and marble powder. Highly transpiring and chemical aggression resistant. Particularly suitable to give surfaces the natural color of the matter. Internal or external application. Colors: white, botticino white, yellow gold, coral pink, field sand, breccia aurora greenish white.
46 Tonachino Cocciopesto
COCCIOPESTO COATING - Finishing powder made of lime, pozzolan, red cocciopesto, and sedimentary silica sand. Grain size 0-1 mm. Internal or external application. Color: pinkish.
47 Vetus Marmorino
MARMORINO PLASTER FINISH - Opaque finish, in powder, made of lime, pozzolan, sedimentary silica sand and marble powder. Highly transpiring and chemical aggression resistant. Particularly suitable to give surfaces the natural color of the matter. Internal or external application. Colors: white, botticino white, yellow gold, coral pink, field sand, breccia aurora greenish white.
52 Malta Per Intonaco Lavato
WASHED PLASTER MORTAR - Smoothing mortar finish, made of lime, micronized natural pozzolas, and lime-silica aggregates. Washed effect mortar finishing. Grain size 0-3 mm. Colors: white, Albettone pinkish nut brown, yellow, sand
53 Marmorino In Pasta
MARMORINO PLASTER FINISH - Traditional finishing paste made of pure slaked lime putty Ca(OH)2 = 98% and selected marble powders. Colors: white and color palette.
54 Grassello a Rasare
SMOOTHING SLAKED LIME PUTTY - Traditional finishing paste made of pure slaked lime putty Ca(OH)2 = 98% and micro-marble particles. Colors: white and color palette.
55 Tinteggio a Calce
LIME PAINT - Pure lime paint Ca(OH)2 = 98% . Internal or external application. Highly transpiring and natural antibacterial. Colors: white and color palette.
56 Tinteggio di Fondo a Spessore
THICK UNDERCOAT PAINT - Lime-based undercoat. To level out any surface irregularities on the application surface. Grain size 0-0.5 mm. Internal or external application.
61 Arenino
- Finishing ready to use paste, made of a high ratio of slaked lime putty Ca(OH)2 = 98%, and selected inerts with continuous granulometric curve. Grain 0-0.7 / 0-1.0 mm.
131 Rasante '900
‘900 LEVELLING MORTAR - Universal levelling mortar in powder, with lime-silica aggregates. Grain size 0-1 mm. Internal or external application.
132 Silifarbe
Potassium silicate mineral transpiring paint. External application. Inorganic binder chemically reacting with mineral substrates through a process called silicatization.
133 Silifix
Dilution and binder for potassium silicate paint. Ready to use.
134 Siliground
Potassium silicate paint filler. Light hardening. It uniforms coarse structures, microcracks, stuccoes, cracks due to settling. It is a bonding primer for old paint or plastic coatings.

Our Services

Consulting and Planning
Assistance to the Construction Site
Laboratory Tests

Contact Us

Feel free to email us we will give you a prompt response!

info@calcherasangiorgio.it

CALCHÈRA San Giorgio, Zona Industriale 3/A, 38055 Grigno (TN)

Tel.: +39 0461 775515 – Fax: +39 0461 776934