concrete over terracotta

[Help2020]

Hi i need to lay a single line of bricks over terracotta tiles, can this be done with cement or do i need to lay a sealant over the tile before adding a layer of cement?

[ahfix]

What are you trying to achieve ?

ah

[Help2020]

There’s a gap between my tiles and fireplace whic I have exposed as the person before boxed it off. I want to lay a row of bricks to cover this gap.