Block paving would tend to be a bad surface for tiling over because its designed to allow the drainage passage of water through it.
Tiling over brick pavers.
How to tile over a brick fireplace step 1.
Brick pavers are typically just laid in place with sand dry morter to keep them from moving.
How to lay brick over existing tile step 1.
Wash the tile floor with a strong de greasing detergent and rinse well with water.
Create a smooth work.
Go over the entire area with a wire brush to dislodge any loose mortar then scrub off the soot with a rag soaked in white vinegar.
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Rough the tile finish with a belt sander that uses a medium grit sandpaper.
When tiling a floor the surface needs to be secure and firm.
If possible you should remove the existing mantel for easier tile.
Put on safety goggles gloves knee pads and a dust mask.
Steps in using this method step 1.
Only way to do it right would be to pull up the pavers and lay a slab then tile.
The main thing when tiling outside is to use a solid bed method of fixing this stops pools of water forming under the tiles which then freezes and pops the tile up.
Use painter s tape to mask off.
Before mixing mortar keep in mind that different mortars or tiling cement work best with.
Place drop cloths over the hearth and the floor.
While this is fine for pavers it does not provide a stable surface for a tile application.
Plan out your pattern layout in advance.
Cover the hearth with a drop cloth and remove the mantel and anything else that s attached to the brick.
Pull up a few bricks and see if you have any sort of substrate ie concrete walkway patio underneath that would provide a proper base for your proposed project.
Steps for tiling over a brick fireplace.
Knowing your start and finish points is important so that your tiles.
Using a trowel spread an even layer of thinset over the bricks.
The thinset will cover the bricks and mortar and provide a flat smooth surface for tile installation.
Sand off the shiny.