The Canudo roof tile is not a fitting tile. This is a very simple tile that due to its simplicity needs some special care when being laid.

The Canudo roof tile is applied, in most cases, directly over a sub-tile. This makes the roof virtually watertight. However, laying these tiles should follow certain rules:

  • Ventilation of the inferior side of the roof tile, for reasons explained in point 2 (Roof Ventilation);
  • Always comply with recommended overlap (see previous point);
  • Fixate the tiles if inclination > 30%.

If not using a sub-tile, the Canudo roof tile can be laid on a discontinuous or continuous support (inclined slab). Laying of the roof tiles should start at the inferior tiles; depending on the shape of the slope it may be more convenient to place the row in the middle rather that on the right side, as the following picture shows:

canudo-camas

Covers should be placed in accordnce with the scheme depicted in picture bellow: roof tiles are laid from right to left and from the bottom up.

canudo-assentamento

This is the most adequate procedure allowing for slight adjustments while providing an overall view of how the roofing work will be conducted. Applying the tiles this way will facilitate the alignment of several rows as the roof takes shape.

Rows should be aligned along the middle of the hollow space of the tile and not by its brims, as shown in the following scheme:

canudo-alinhamento

It should be noted that in slopes above 150% and/or exposed to strong winds, the roof tiles should be fixated to the lath work, at a proportion of 1 tile in 4. If the slope has values above 300%, all tiles must be fixated.

Fixation, as mentioned before, can be conducted by means of clamps, screws or galvanized nails. Fixation by clamps is done as shown in the picture below:

canudo-grampo

Note: fixation by nail or screw requires the roof tile to have a pre-hole, which the Torreense Canudo tile does not have.