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The interlocking tiles are today the most widespread on the roofs of the Hexagon. They are also the most economical and easiest to install, at least when the roof is sufficiently regular.

Roof made of interlocking tiles

Small and large tiles: always beautiful

Manufacturers are competing ingeniously to improve the aesthetics of interlocking tiles, also known as mechanical tiles because they are manufactured industrially. Created in the nineteenth century to lighten the covers, they have long conveyed an economic image, primarily utilitarian. Today, even the entry-level products look after their appearance.
The small interlocking flat tiles (20 per square meter) offer an appearance close to traditional tiles and display a certain elegance.
Tiles large molds (9 or 10 m2) are to be reserved for sufficiently large roof surfaces.

Faithful reproductions

In the southern regions, interlocking tiles, which are strongly curved, called "Romanesque" or "southern", faithfully reproduce the appearance of the canal tiles.
Easier to install and cheaper, they have become the reference. In addition, in these windy regions, they are more stable than channel tiles.
To further optimize the aesthetic / price ratio, manufacturers also offer tiles "10 m2" that mimic "20 m2" by a set of vertical grooves giving the illusion of two tiles in one element. Same approach for Roman tiles: they seem smaller thanks to their horizontal moldings.
Some manufacturers have also launched "9 to m2". This is probably the limit. Offering less tiles per m2 would not pose any manufacturing constraints. On the other hand, from an aesthetic point of view, their implementation would harm the visual balance between the tiles and the average surface of the roofs.

Choose interlocking tiles: tiles

The canal tiles are very competitive with the southern interlocking tiles, commonly called southern tiles.

Tiles: the principle of interlocking

Molded at the edge of the visible part of the tile (called pureau), ribs allow the interlocking of the tiles between them.
This system replaces the recovery principle used for flat tiles or channel. The apparent surface is thus larger, from 1/3 for flat tiles, for example, to 3/4 for mechanical tiles.
These interlockings also facilitate the evacuation of rainwater, ensure the rapid installation and stability of the tiles implemented.

Choose interlocking tiles: tiles

The interlocking technique makes it possible to produce regional-inspired tiles, such as this model, designed for the regions of tradition of lauze ("Tuilauze" of Terreal).

Choose interlocking tiles: interlocking

The quick and easy installation of interlocking tiles does not exempt you from working safely on the roof.

Interlocking tiles: natural shade choices

Thanks to a wide choice of colors and textures, interlocking tiles adapt to all types of architecture. Traditionally, the clay used to make it gives the tile its color. This material can also be tinted to obtain specific shades.
The "flamed" or "aged" aspects are generally obtained by sanding, dusting or tumbling applied to the surface of the tile before firing.
These finishes are appreciated because they avoid the overly conspicuous appearance of a new roof and also make it possible to better integrate a new roof with an old construction.
Proposed in certain ranges, the blend of colors also brings a touch of tradition, and gives the visual impression of tiles of different eras.

Why put a screen under the roof

Laying a screen under the roof

An under-roof screen has multiple functions. The first is to protect the attic from insects, small birds, dust, soot and powdery snow. It also helps prevent accidental water infi ltration, redirecting them to the lower part of the roof (sewer). Thus, for some products, the minimum slope can sometimes be reduced.
It also helps to limit the risk of lifting tiles in strong winds or storms. Finally, highly permeable screens with water vapor (HPV) can be placed directly on the insulation (thickness gain) without risking the appearance of condensation. In both new construction and renovation, underflooring screens offer many advantages, including the ability to reduce the minimum slope in some cases.


Video Instruction: How to choose the interlocking flooring tile