Hi
I have a doorway to brick/block up in an external cavity wall. External skin will be bricks toothed into existing to match. The existing inner skin is common brick (no plastered). I was going to use some left over thermalite type blocks to block up the inner skin, but was wondering if when the whole wall is plastered I am at more risk of cracking plaster than if I used standard concrete blocks (3N) i.e. in the basis that the thermal blocks and adjacent existing brickwork are very different materials. I will be installing wall starters to the brickwork to take the blocks as I have some left over.
I may be worrying over nothing, and a decent amount of reinforcing tape in the plaster at the block/brick joints may do the trick. I'd appreciate any advice.
Many thanks
I have a doorway to brick/block up in an external cavity wall. External skin will be bricks toothed into existing to match. The existing inner skin is common brick (no plastered). I was going to use some left over thermalite type blocks to block up the inner skin, but was wondering if when the whole wall is plastered I am at more risk of cracking plaster than if I used standard concrete blocks (3N) i.e. in the basis that the thermal blocks and adjacent existing brickwork are very different materials. I will be installing wall starters to the brickwork to take the blocks as I have some left over.
I may be worrying over nothing, and a decent amount of reinforcing tape in the plaster at the block/brick joints may do the trick. I'd appreciate any advice.
Many thanks
