If existing tiles are beyond repair remove the tile and install a piece of wallboard in its place.
Tiling outside of cooler walls.
On the downside epoxy mortar is more expensive than thinset and has a strong smell while it cures.
These substrates must be structurally sound meet deflection requirements and meet on plane requirements.
Additionally epoxy mortar sets quickly.
And just how strong they need to be is dependent on the level of use you anticipate.
In warm climates the barrier should point to the outside of the house blocking the vapor from the humid outside air that may seep into the walls or ceilings.
1 inspect the exterior substrate.
A mortar like custom s prolite rapid setting tile.
Warmer temperatures speed up curing time.
To do so make sure all of the tiles are intact and secure.
2 prepare the exterior substrate to receive tile.
5 mix and apply the tile mortar.
Repair any loose or cracked tiles.
10 complete the installation and maintain as needed.
If you must install tile in an environment near the recommended 50ยบ f minimum the installation may benefit from an accelerated or rapid curing mortar.
6 set the tile.
Unlike the tiles used for indoor walls and floors outdoor tiles need to be particularly strong and able to withstand a wide range of temperatures and weather conditions.
Tiling over an uneven surface will give you less than stellar results so level out any globs of dried grout with a sander and secure loose tiles with fresh.
Cooler temperatures slow it down.
In cold climates the opposite is true.
9 clean up after grouting.
Prepare the surface for installation.
Generally ceramic porcelain or stone tile can be installed in exterior locations over suitable substrates such as masonry concrete mortar beds and in some cases certain types of backer board units.
Wash the wall with tsp tri sodium phosphate or an ammonia based cleaner to remove any grease or oil.
8 mix and apply grout.
A plain garden or patio outdoor wall will look more finished with the application of tile.
The air is usually warmer inside the house so condensation can build up from air entering the wall from the inside.
Basic temperatures most thin set grout and mastic manufacturers ask that you maintain between 50 and 100 degrees fahrenheit with a minimum time of 72 hours allowed for drying.
4 plan the exterior floor layout and make tile cuts.
3 apply a waterproofing membrane.
Keep in mind that the surface receiving the tile may be colder than the air temperature above it.
Remove the tile and prepare the wall according to the corresponding instructions above or tile over the existing tile.