Tiles over Acrylic render

[Sozzled Monk]

I painted my oven with an acrylic render. I now have some hairline cracks in the render, started small, bit of rain, fire, and then bit wider and more cracks appeared. I am considering putting tiles ontop of this acrylic render. Is this possible or I need to somehow remove the acrylic render first?

[MarkJerling]

Most good tile bedding compounds will stick like you know what to just about anything. I've tiled over old tiles, over smooth terrazzo, even over a wood floor. Tiling over an acrylic render should present no issues, providing the substrate is not moving and the cracks are (now) relatively stable.