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Roof Tiles

Roof tiles have been around for ages. What makes them a leading choice for the roof are their durability and their ability to withstand high as well as extremely low temperatures.



The quality of roof tiles depends upon the clay soil used. When the clay is fine and dry the result is extremely smooth finish elegant lines and long lasting roof tiles. So after we select the soil we place it and press in metal frames. Then place them in a drier. After it is dried for a 24 hour spell we take them out of the metal frame and we place them in a setting machine. The next step is to place them in a furnace at temperatures of around 1000 ° c followed by the glazing machine that will add the final effect on the roof tiles whether is glossy, colored or matt finish. Good quality clay roof tiles are frost free as well as water resistant and with a high mechanical strength. They are durable and they remain as good as now for years to come.




Roof tiles should be layed down starting from the eaves line and proceed towards the roof ridge.

The tiled roof must have at least a 27% slope. In case of areas of extreme weather conditions the slope should be essential. For slopes higher than 33% the roof tiles should be fixed.

Also consider that when tiles overlap the slope decreases to 8%.




Pitch length slope
From 0 to 5 meters 30%
From 5 to 6 meters 33%
From 6 to 7 meters 36%
From 7 to 8 meters 40%
From 8 to 10 meters 46%
From 10 to 12 meters 52%
From 12 to 14 meters 60%



The laying of the tiles should be of subsequent horizontal rows starting from the gutter.

It is necessary to put an extra wooden list among the first row to lift the slope to be subsequent to the rest.

We also have to consider encouraging air circulation between the tiles and the ceiling floorThis will lead to cooler roof temperature during the summer and also minimize the water penetration during the winter days.For every 25 sq. meters it is important to place a pair of ventilating tiles.  One to the lower roof and another one higher up.  In this way optimal air cerculation is achieved.

In order to allow the drain of leaks to condensate it is important for wood listings to have a 2 to 3 cm interruption in every 3 to 4 meters or to raise up the butten in order to form a water passage in case of leakage.

For excellent adhesion and ventilation on the ridges and eaves especially on extreme weather conditions it is recommended to use fleximroof mortar instead of substances with cement base..Another product supplied by RoofTech.

Another factor we have to consider is the weight of roof tiles which varies around the 50 kg barrier per square meter..That means that the construction should be able to withstand such loads for safety.

Earth ware tiles are porous and humidity is expelled from both sides therefore ventilation is essential both above and below.

For this reason tiles should not be placed directly on a made of absorbing material such as wood or cement surface.

For valleys and flashings we recommend lead sheets. With this material future repairs are easer than ever. Another product supplied by Rooftech.


Types of roof tiles

Every manufacturer has its own colors and lines but most widely used types are:

Portuguese clay tile
Marseille clay tile
Semi-circular tile
Olandese tile
Romana tile
Flat tile

On every line of tiles you will also find the finishing elements such as:

ridge end
angular ridge with shell
TV aerial tile
chimney pot
three way ridge
four way ridge
bird dissuader (PVC)
bearing base (chimney base)
right /left lateral tile
joint for lateral tile
snow guard tile

Good roof tiles are produce under strict standards of quality such as EN1304, EN1024, EN538, EN539-1, EN539-2.