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Gordillo’s Cal de Morón – Isidoro Gordillo Mesa

Extraction of limestone, Lime or gypsum finishings, Lime painting, Manufacture of lime, Rammed earth and adobe walls, Sgraffiti, Stuccoes

NAME

Gordillo’s Cal de Morón – Isidoro Gordillo Mesa

PROVINCE

Sevilla

SPECIALIST IN

Extraction of limestone, Lime or gypsum finishings, Lime painting, Manufacture of lime, Rammed earth and adobe walls, Sgraffiti, Stuccoes

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TELEPHONE:

955 957 006 – 639764305

EMAIL ADDRESS:

info@gordilloscaldemoron.com

ADDRESS:

C/ Hojiblanca Nº 8. 41530 Morón de la Frontera

Website
DESCRIPTION OF THE WORK

In 2011 the artisanal production of lime in Morón received an acknowledgment by the UNESCO, becoming registered within the list of programmes, projects and activities for the safeguarding of Heritage and declared Intangible Cultural Heritage of Humanity in its section regarding good practices. From mid 19th century, they manufacture high-quality lime in an artisanal way, unique in the world. Gordillo’s Cal de Morón selects the stone from the quarry, picking and differentiating between the different types, and they carry out an inherited technique which, today, is only carried out by this family. In Morón de la Frontera (Sevilla) there are important quarries of very pure limestone, its composition has a 98% of calcium carbonate. This natural richness is the first step to the quality of the final product. 

Lime is a natural product, with a production cycle that is very respectful with the environment. In the process of manufacture of lime, limestone is used (calcium carbonate [CaCO3]). When limestone is fired at high temperatures (above 900º), carbon dioxide (CO2) is released, transforming it into quicklime or calcium oxide (CaO), which will then need carbon dioxide (CO2) again to harden and become calcium carbonate again. 

Products: air lime putty, obtained from the process of firing the limestone in the wood-fired oven, quality CL90. Lime powder, resulting from the firing of limestone of a purity of up to 99% in calcium carbonate, selected from the quarry, at a constant temperature between 900ºC and 1000ºC, during about 15 days non-stop, in ovens of Arabic origin, using as combustible materials olive wood, pine, holm oak,…All the process is carried out in a traditional and artisanal way with complete respect for the environment. The result is a product of great creaminess, malleability and softness, speed curing and hydraulicity, without losing any resistance. 

Quicklime in clods: air lime putty, obtained from the process of firing the limestone in the wood-fired oven, quality CL90.

Lime putty with an ageing effect: air lime putty, obtained from the process of firing the limestone in the wood-fired oven, quality CL90. It is a soft, dense and white paste, resulting of the firing of the same limestone as used for the other two products but aged in silos for over four years. 

Lime putty mortar: used for both exterior and interior finishes, made of a mixture of air lime putty, obtained from the process of firing the limestone in the wood-fired oven, quality CL90, and granulated aggregates of calcium carbonate (purity of over 90%), selected siliceous aggregates and inorganic pigments. It is executed as a first levelling layer since it has coarse uncoloured aggregates. After that, one or two layers are applied, depending on the sort of finish, made of lime mortar of a fine and smooth nature and a thickness of 5mm. Lime putty mortar is ideal for rough render coatings and re-jointing in rehabilitation and restoration works of historic buildings where identical mortars to those original ones are required, with the same characteristics and patinas of the old days.

Hydraulic lime: lime mortar, used both for exteriors and interiors, made of a mixture of hydraulic lime NHL-3,5, obtained from the firing process of lean limestone, rich in aluminium, in a wood-fired oven, producing silicates, aluminates and iron-aluminates, with grounded aggregates of calcium carbonate and selected siliceous aggregates, cellulose fibre, styrene acrylic resins BASF under 5% according to DIN 1836, vegetal glue and natural additives.

APPRENTICESHIP

The craft linked to lime has been transmitted from fathers to sons since 1874. From mid 19th century, they manufacture high-quality lime, parting from the usage of wood-fired ovens of Arabic origin. Their good work and know-how has been transmitted from one generation to the next until today, optimizing the final result to obtain a product of great purity and whiteness. 

Because of the familiar and artisanal nature of the company, they only hire highly qualified staff in the field of artisanal production of lime. It is the passion for the craft, their effort and dedication along with traditional construction systems what really unites them.

TEACHING

He has delivered courses and workshops at the Escuela de Patrimonio Nacional del IPCE in Nájera, at the IAPH (Andalusian Institute for Historic Heritage), at the Training Centre Museo de la Cal in Morón, at the Escuela Superior de Arquitectura of Seville, in several National Schools of Architects (Valencia, Seville, Cáceres, Vigo, La Coruña, etc.), in Sierra de Francia, and with the Provincial Council of Salamanca and Valladolid as well as with AR&PA.

SELECTED WORKS

Cartuja de Jerez, Artillery Factory in Seville, the Archbishop’s Palace in Seville, the Church of Santa María la Blanca in Fuentes de Andalucía (Seville), Santo Domingo of Granada.

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