I have a section on my build where a masonry wall connects to a timber frame. This is for a wall above joists, to allow a step between roof levels.

The structural engineer detail the connection as below

 

 

My concern is render cracking at this join. Here is the upright bolted to the wall as on site.

 

These are M10 threaded bar embedded into block by 80mm and resin anchored in place.

 

I am just wondering if there is anything else that can be done to reduce movement between the two wall types which would create cracking (structural enginner said it didnt need a movement joint).

 

I am wondering if the render carrier board extends over the joint to the masonry by 600mm or so and fixed to the block.

Put a standard render expansion bead at that joint.

A shadow gap might help too. Lining the render straight over the join is bound to crack, so prodaves bead, and perhaps recess or express it.

22 hours ago, ProDave said:

Put a standard render expansion bead at that

 

On 25/06/2022 at 15:24, ProDave said:

Put a standard render expansion bead at that joint.

 

Thanks

I take it a 20mm one of these, sand and cement render to the left, render carrier board and render to the right