I'm unsure about the regulation for tile splash backs behind a gas cooktop. Can the tiles go directly onto a plaster wall or do I need a fire retardant behind the tiles
Hi Mike,
Thanks for your question.
There are several variables to consider like the thickness of the tiles you're using and the distance between the splashback and the cook top. This article on splashback regulations should provide the information you're looking for.
Hope this helps,
The BUILD Team.