Cracks and gaps can be filled with portland cement based fillers.
Tiling over concrete wall.
Grind off all ridges or mortar protruding out from the wall with a concrete grinder.
The safest way to approach questionable concrete is not to cover it over with cbus but to fix the concrete.
Back buttering is a trick used for tiles of uneven thickness like ungauged slate or handmade tiles extremely large tiles or for tiles being installed on an uneven surface.
The key to a long lasting and attractive tile installation is proper substrate preparation.
Installing tile over concrete walls is possible but presents some unique challenges.
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The mortar is spread.
Wall and flooring indoor tiling tile over exposed aggregate concrete porch does anyone have experience on installing exterior tile over exposed aggregate concrete.
In colder climates the action of the freezing and thawing temperature can cause tile installations to fail.
Scrub concrete walls with a wire brush to remove debris dust or any other materials stuck to the wall.
The cinder block wall needs to be thoroughly scrubbed of dust from grout and chunks of loose brick so that the new tiles will be able to adhere easily and not fall from the wall or crack or crumble over time.
Tile bonded directly over masonry or concrete in figure b the tile bond coat is dry set latex modified thin set mortar directly on masonry or concrete wall.
Tiles come in a variety of natural and man made materials and they make durable attractive surfaces for both walls and floors.
Laying down tiles on a concrete wall is not much different than laying tiles on drywall.
Another thermal demand relates to the area of freeze thaw.
Tile on tile or as i say it.
And it lasts for 20 years.
A completed tile job is extremely heavy and requires a substrate sturdy enough to support the weight.
However make sure that the surface is smooth and flat before doing anything.
Tile cannot be attached directly to painted concrete as the thin set will not adhere well to the paint.
My covered porch on a 5 yr old.