Bad weather is often the cause of disorders on exterior tiles. And it is better to intervene quickly before a small problem turns into more significant damage …

Repairing the tiling of a terrace

Tiles that no longer adhere to the support sound “hollow” when walked on. In summer, they lift slightly: the cement joints begin to crack, then degrade and finally disappear, leaving the gaps empty. The detachments of tiles can also appear if the original support has not been covered with a layer of primer (Weber, Cegecol, Sigma …), particularly if it is a tiling with an enameled surface (our example ). In principle, the installation of new tiles is carried out by simple gluing after the application of a primer coat to improve the adhesion of the new coating

Main difficulty: removing the broken tile

If the tiled support is in poor condition, it must be removed and then the floor leveled (or make a screed if the original one is damaged) in order to find a perfectly flat and stable surface. As it is rare to keep tiles identical to those already installed, the most delicate operation consists in carefully removing the elements which no longer adhere to the support, without breaking them, so that they can be reused once the adhesive residues have been removed. . The installation of tiles of this dimension (greater than 30 x 30 cm, our example), requires a double gluing (underside of the tiles and support). Once the tile is laid, check its horizontality (spirit level) and adjust it if necessary (rubber mallet).

Avoid cleaning with high pressure water

The terracotta tiles then require regular cleaning: simply rub them with a broom (water with black soap or light detergent for tiles) and then rinse them thoroughly with clean water. The use of a high pressure cleaner should be avoided. If you regularly use a barbecue on the terrace, you must protect this type of tiling with a special water-repellent terracotta product (CéraRoc, Starwax, Terral, etc.). Applied with a large brush on a dry and dusted support, this undercoat acts as a sealer and avoids the encrustation of grease stains. To renew once or twice a year.

The terracotta tiles then require regular cleaning: simply rub them with a broom (water with black soap or light detergent for tiles) and then rinse them thoroughly with clean water. The use of a high pressure cleaner should be avoided. If you regularly use a barbecue on the terrace, you must protect this type of tiling with a special water-repellent terracotta product (CéraRoc, Starwax, Terral, etc.). Applied with a large brush on a dry and dusted support, this undercoat acts as a sealer and avoids the encrustation of grease stains. To renew once or twice a year.

How To Replace Outdoor Broken Tiles

– Cut the joints with a grinder equipped with a hard material disc or using a multifunction tool.

– Move carefully so as not to cut the tiles.

How To Replace Outdoor Broken Tiles

– After removing the tiles by prying with a screwdriver, remove the adhesive residue on the support with the hammer and chisel.

– Level the surface with a sander.

How To Replace Outdoor Broken Tiles

– Remove the adhesive residue on the underside of the tiles using a flat screwdriver and a hammer.

– Do not strike too hard and work on a support that absorbs shocks.

How To Replace Outdoor Broken Tiles

– Thoroughly clean the back of each tile for good adhesive adhesion.

– Use a sander or multi-purpose tool (with tungsten carbide head).

How To Replace Outdoor Broken Tiles

– After dusting, degreasing then rinsing the support, allow to dry before applying a coat of primer with a brush.

– Cover immediately after. Wait for complete drying (approx. 4 hrs).

How To Replace Outdoor Broken Tiles

– Glue the back of a tile with a notched trowel.

– Place this tile on the support and adjust with the rubber mallet.

How To Replace Outdoor Broken Tiles

– After the glue has dried (24 h), remove the braces and prepare the grouting mortar.

– It should be slightly liquid. Fill the joints with a cat’s trowel.

How To Replace Outdoor Broken Tiles

– Smooth the joints by pressing firmly on the rubber squeegee.

– Clean and remove traces of laitance on the tiles with a damp sponge regularly rinsed.

Practical advice

• To protect the support just after applying the primer, fix a piece of tightly stretched polyane around the periphery with adhesive tape. This prevents leaves and other gravel from settling there before the primer is completely dry and does not interfere with the gluing of the tiles.
• To preserve the aesthetics of the coating and carry out an almost invisible repair, choose a mortar of the same color as that of existing joints and braces of identical thickness.
• The adhesive mortar is only adjustable for a limited time. Pour the necessary content into a container and spoil it as you go.