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1920
1930
1940
1950
1960
1970
1980
1990
2000
2010
2020
José Coelho da Silva receives a license to "explore a kiln for roof tiles" in Albergaria, Juncal, where the company is still in. CS began to manually produce canudo roof tile.
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João Lopes Coelho da Silva (1913-2005), the founder’s son, inherited the company, changing its name to his own name.
Toghether with canudo roof tile, hitherto the only manufactured product, is introduced the manufactured tile Marseille, using manual presses. |
First major expansion of facilities, with the creation of a complete unit later known as Mill #1, starting-up the production of the traditional Roman roof tile model. It’s in this building, fully recovered, where currently are the administrative services.
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Factory 1 Expansion, where a large Hoffman kiln is installed.
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The company changed its name to J. Coelho da Silva, Lda, and the entire share capital is owned by João Lopes Coelho da Silva.
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The third generation takes over the management of the company.
A second production facility starts up (today known as Factory 2) automated and designed for the manufacture of a new model of roman roof tile under the brand F2. Following the second oil shock, a preparation of solid fuels is installed to power the factory 2 kiln tunnel, a totally innovative project at the time. |
The first phase of factory 3 is built. This unit is a fully automated and multi-product mill for the production of roof tiles and fittings.
Begins the production of the Roman roof tile model, under the brand F3. |
João Lopes Coelho da Silva is awarded as «Comendador da Ordem de Mérito Industrial».
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The second phase of Factory 3 is built, enabling the production of the engobed roof tiles with different clay mixtures.
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A new unit for clay preparation is built, then considered the most modern of the Iberian Peninsula, with an initial capacity of 180.000 tonnes per year.
Natural gas is introduced in all mills, replacing all other fuels, and is installed a CHP Plant. |
This unit, with the possibility of producing roof tiles and fittings in colors and different clay mixtures, also introduces a pressing in plaster system and firing process on "H" gazettes in a hydrocasing technology kiln.
The production of a new Roman roof tile starts, premium quality, under the brand TECNO. The company adopts a new logo, communicating with the initials "CS". |
Begins the production of Marseille roof tile model under the brand DOMUS.
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The CS commercial network extends to external markets.
On December 2nd, with 92 years of age, dies the major CS driver, João Lopes Coelho da Silva. |
The first fully flat roof tile model of premium quality in the Iberian Peninsula is launched, under the brand PLASMA.
CS launches CS Facades concept, extending the use of Plasma range to the walls, with the creation of fittings that guarantee a ventilated facade. |
WIP - «Work in Progress», is built. WIP is a training center for customers, specifiers, applicators and students of construction and architecture.
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The company changes its name to CS - Coelho da Silva, SA, and the entire share capital is helded by the family Coelho da Silva.
The production line of Factory 4 is refurbished, increasing its flexibility and capacity. A new model of Roman oof tile is launched, under the trademark F3 +, as the result of optimization of the previous model F3, which is discontinued. |
The production line of Factory 3 is refurbished, increasing its flexibility and capacity.
CS SOLAR project is created, embodying a commitment to submit CS performance as a corporate interest in sustainable development. |
The CS Rehabilitation concept is launched, with solutions aimed fot roof covering renovation: new marseille roof tile model, under the D3 + brand, Barrel roof tile, mansard tile, and eaves 65.
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CS launches the Barrel roof tile (model with which it started its activity in 1927) on the market, reproduced from the historic curved roof tile, with a design that ensures the continuity of tradition.
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The 1st phase of Factory 5 is completed, a new production unit for premium range products, using the most advanced technology in terms of process, flexibility and rationalization of energy costs.
Textured effects are presented in the Plasma model, introducing the concept of contemporary design on the tiles. |
The production of a new Portuguese roof tile model begins under the brand F5, mainly aimed at international markets.
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Inspired by the schist villages, Plasma TX5 roof tile seeks to reflect an ancient roof covering concept, by reproducing the texture of slate in clay tiles.
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CS relaunches the Barrel roof tile on the market (model with which it started its activity in 1927), reproduced from the historic curved tile, with a design that ensures the continuity of tradition.
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Angle to chimney 125 mm launch
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Ventilation tile Barrel 45x20 launch
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Eave corner Domus 3 pieces launch
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Left PL1 ridge tile and Right PL1 ridge tile launch
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LAUNCHESCurved finish eave inner corner 65 Tecno (13 pcs)Curved finish eave inner corner 65 F2 / F3+ (13 pcs)MR1 Curved finish eave inner corner 65 (13 pcs)Angle to chimney 150 mmChimney support tile 150 mm Plasma
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Chimney support tile 150 mm F2 / F3+ launch
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LAUNCHESBarrel roof tile 45x16Chimney support tile 125 mm 45x16Barrel safety step and ventilation tile 45x16Barrel ventilation 45x16CR2 ridge tile
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FAQ'S
CONDENSATION ON CLAY ROOF TILES. WHY IT HAPPENS AND HOW TO PREVENT IT?
PROXIMITY TO THE SEA AND THE EFFECT OF SALT. WHICH TILE SHOULD I CHOOSE?Condensation is a common natural phenomenon that occurs when air saturated with water comes into contact with a cooler surface forming moisture, or droplets, on that surface. It happens in clay, glass, concrete, painted walls, aluminium and other materials, and can occur with or without rain.When condensation appears in clay tiles, it's a common misconception to think that there is a problem with the tiles or the roof. However, clay tiles are waterproof and an infiltration only happens if the roof is not well constructed.To reduce the probability of condensation occurring, the roof must be well ventilated and the minimum roof pitch recommended by the manufacturer respected, following the principles presented in this booklet. A breathable waterproof membrane can also be added to the roof to protect other materials.
LOCATIONS WHERE FREEZE-THAW CYCLES OCCUR.Clay roof tiles, as most building materials installed in coastal areas, can be affected by salinity, resulting in its early degradation. This happens as the result of crystallization of soluble salts inside the tile, naturally absorbed when exposed to saline fog.
In order for the tiles to fulfil their role effectively in coastal areas and delay damage by salinity, good installation practices must be followed, namely when it comes to the pitch and ventilation of the roof.Engobed tiles (coloured) are not recommended for coastal areas as their appearance can change in a short period of time due to the exposure to salt. When close to the sea, choose Natural Red where the effect of salinity is less noticeable.
CS product warranty does not cover the effect of salinity on clay tiles.
MOSS/LICHENS ON THE ROOF. HOW TO PREVENT AND REMOVE IT?Despite being waterproof, clay tiles absorb some water when it rains. In areas with frequent freeze-thaw cycles, if there's a rapid drop in temperature, this absorbed water can freeze inside the tile. After many cycles, the tile may show spalling/delamination, which compromises its appearance and durability.
In order for roof tiles to efficiently fulfil their role in climates with freeze-thaw cycles, follow good installation practices, namely when it comes to the pitch and ventilation of the roof, so the materials can dry quickly.
CS product warranty covers frost damage in clay tiles, provided that their installation instructions are duly complied with.
Moss and lichens are a common occurrence that, under the right light, temperature and humidity conditions, can develop on the surface of materials like clay, stone, paint, wood, concrete or even glass (which is not even porous), affecting from floors to walls, façades or the roof.
ARE COLOUR VARIATIONS A DEFECT?The growth of moss on the roof is not possible to predict, but contributing factors are the proximity to vegetation and/or farmed land, the existence of shady areas, damp conditions, the orientation of the building, its exposure to sunlight, and atmospheric pollution. While it's impossible to control or avoid all these factors, a well-constructed roof and/or façade is crucial in delaying and minimising the growth of moss and lichens. Good ventilation throughout the roof is essential as well as all other factors that promote the fast drying of the roof materials such as an adequate support structure, air inlets and outlets, use of ventilation tiles, avoid excessive use of mortar, and respecting the minimum roof pitch recommended for the climate region where the building is located.Usually, just the aesthetics of the roof are impacted. However, the efficient drainage of rainwater can eventually be affected as well, and the stagnation of rainwater in certain areas can potentially lead to infiltrations.To remove moss/lichens, wash the roof and/or façade or apply a product of proven effectiveness, which must not be harmful to the roof tile and other materials (see section Roof Maintenance).
Clay roof tiles and fittings have a natural raw material in their origin – clay. For this reason, their mineral composition can vary slightly which results in small (and expectable) colour/shade variations after the firing process, even when manufactured on the same date, and regardless of being in its natural colour or an engobe colour chosen from a marketing brochure. It's not possible to ensure absolute uniformity. These differences are acceptable, not considered a defect, and often welcomed as a nice visual effect in the overall natural aesthetic of the roof.
As a way to mitigate possible more significant variations, we recommend mixing tiles at random from several pallets on site.
MAINTENANCE ACTIONS
TWICE A YEAR
- Inspection of the water drainage system
- Clearing ventilation areas
ONCE A YEAR
- General inspection of the roof
- Inspection of transition areas like the perimeter of chimneys, etc.
- Checking fixings of clay pieces
- Elimination of moss/ vegetation and other debris
REMOVAL OF MOSS, VEGETATION AND OTHER DEBRIS
It is recommended to remove moss/ lichens, vegetation and other debris every year and whenever the compromise the efficient drainage of rainwater. The roof should be washed with ONLY pressurized water and gentle brushing, from the ridge downwards to the eaves. The use of water must be restricted to the minimum necessary for adequate washing, in order to prevent infiltrations during the process. Alternatively, you can use the CS ANTIFUNGI product sold by CS. For more information on its features and application, please get in touch with CS sales department.ATTENTION
Maintenance work involving the application of sealants, paints, varnishes or other similar products on clay tiles is strongly discouraged, as they can cause their rapid and severe deterioration.
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