You may tile over existing tile painted or unpainted drywall plaster and textured walls.
Plaster over tile wall.
Well in the old days you would drill holes at the top every 150mm put a small hose throught the holes atached to a funnel then you would mix unibond with 70 water and pour in then you would go down half way drill holes again and repeat leave three days to dry with the lime plaster and hores hair and lathes it would harden like concarete give wack with hammer to test its strengh then tile.
How can you plaster over a glazed tile wall.
Install the diamond mesh directly over your tile surface.
You should not tile over wallpaper glossy surfaces lead paint or plywood.
Epoxy tile adhesive bonds with existing tiles making it one of the best options for tiling over an existing tiled wall.
Use 7 5 cm 3 inch galvanised screws and screw directly through the mesh and into the wall framing behind the tile.
However tiling over tile can add quite a bit of thickness so make sure your wall can handle the weight.
Can you lay tile on plaster walls.
Use a stud finer to find the wall studs and mark them with a pencil or marker.
Glazed wall tile offer nothing for plaster to stick to so plastering directly to tile isn t a good idea.
Loose paint must be scraped.
Testing the wall for durability.
Both painted and bare plaster allows for the installation of tile.
Add the fact that wall tiles may not be on a sound solid subsurface and the additional weight of the plaster could cause the wall to crack or even delaminate from the framing.
Not all plaster wall surfaces will support the tile properly.