Find out the correct pitch for ceramic roofs

The correct roof pitch is essential to ensure rainwater drainage, prevent leaks and extend the life of the roof.

In the case of ceramic tiles, this care must be even more precise, as each model requires a specific minimum slope to function efficiently.

But what's the ideal pitch for ceramic tile roofs? The answer varies depending on the type of tile used, and understanding these variations is crucial for the safety and durability of the project.

In this article, we will show you how to calculate the ideal slope according to the different types of ceramic tiles.

Happy reading!

How to calculate the slope of ceramic roofs?

Roof pitch is expressed as a percentage (%) or degrees (°) and is directly related to the height of the roof's water (from the highest point, such as the ridge, to the base) compared to the horizontal length of the water (the distance the water travels to reach the gutter).

Use the formula below to find the roof slope as a percentage:

i = slope h = height (measured from the highest point of the water to the base) b = base (half the total width of the building)

The formula is:

i = (h × 100) ÷ b

How is the roof slope calculated for TOPTELHA tiles?

The minimum recommended pitch for roofs varies depending on the length of the roof.

For roofs between 0 and 3 meters long, the minimum slope is 30%. From this point onwards, a 2% slope should be added for each additional meter, ensuring the roof's watertightness and preventing premature greening of the tiles. For slopes greater than 100%, all tiles must be properly secured to ensure the structure's safety.

Following these recommendations is essential for the good performance and durability of your roof.

Different types of ceramic tiles and their slopes

Ceramic tiles are widely used in construction due to their durability, traditional aesthetics and excellent thermal performance.

However, each type has specific characteristics that directly influence the roof's performance, especially regarding the minimum slope required to ensure efficient rainwater drainage and prevent infiltration.

Below, we present our main tile models and their particularities:

1- Mediterranean ceramic tile;

2- Roman ceramic tile;

3- Colonial ceramic tile.

1- Mediterranean ceramic tile

It is a modern option that stands out for its efficient fitting system and contemporary look.

Its design was designed to offer superior sealing, which allows it to be used on roofs with smaller slopes compared to other models.

The minimum recommended slope for Mediterranean tiles is 30%, making them ideal for roofs with low slopes but which still require good water drainage performance.

With smooth lines and a uniform finish, this tile is widely used in urban projects that value a cleaner, more modern aesthetic.

2- Roman ceramic tile

It has a flatter profile and also has a side fitting system, which contributes to a practical and visually aligned installation.

The minimum recommended slope for the Roman tile is 30%. It's an excellent choice for roofs with straight lines and more modern architectural designs, seeking a discreet and elegant covering.

3- Colonial ceramic tile

It's widely used in projects with a rustic or classic feel. With a curved shape and no interlocking system, this model relies on overlapping tiles to ensure a seal, which requires a steeper slope to prevent water from returning through capillary action. The minimum recommended slope for colonial tiles is 35%, making them ideal for higher, steeper roofs, typically found in country houses, farms, and colonial or Mediterranean-style buildings. Although it places greater demands on the roof structure, its natural ventilation and aesthetic appeal greatly enhance the project.

Summary of types of ceramic tiles and their slopes

Tile Type	Features	Recommended Minimum Slope	Indication for Use
Mediterranean	Efficient fit, modern design, good seal even with little drop	30%	Low-slope roofs, contemporary designs
Roman	Flat profile, side fitting, aligned appearance, requires more tilt	30%	Roofs with straight lines and modern aesthetics
Colonial	Curved, non-fitting shape requires overlap and high slope for sealing	35%	High roofs, rustic or classic style (country houses, farms)

Where to find the different types of tiles?

When choosing the ideal roofing for your project, relying on a specialized manufacturer makes all the difference. TopTelha offers a complete line of ceramic tiles and complementary pieces with superior quality, a variety of models and finishes that match a wide range of project styles.

Our technical team is ready to offer personalized guidance, helping you choose the type of tile best suited to your construction needs, considering factors such as region, climate, aesthetics, and ideal roof pitch.

In addition to the variety of options, you will find at TopTelha:

1- Perfect alignment;

2- Quality and high resistance;

3- Thermal comfort;

4- Color options;

5- Unique design;

6- Waterproof with silicone, low absorption.

1- Perfect alignment: Tiles designed for a precise fit, ensuring uniformity on the roof.

2- Quality and high resistance: Selected raw materials and rigorous production process for greater durability, ensuring resistance greater than 300kgf.

3- Thermal comfort: Tiles that help maintain a more pleasant internal temperature, with better thermal performance.

4- Color options: Variety of shades to match different architectural styles.

5- Unique design: Differentiated aesthetics that enhance the appearance of the roof and facade.

6- Waterproof with silicone, low absorption: Tiles with treatment that reduces water absorption, offering more protection and durability.

Conclusion

Knowing the correct pitch for ceramic roofs is essential to ensure the durability of the structure, prevent leaks, and maintain the roof's good performance.

As we have seen, the ideal slope varies according to the type of tile, such as Mediterranean, Roman or colonial, and this specification should be considered at the beginning of the project . If you are looking for quality ceramic tiles and want to ensure a durable roof with a great finish, count on TopTelha.

To learn about our products, click here .