P
philhjobim
New member
I have a concrete block wall (heavy block laid 8 inch wide) which a builder just built for me to divide a cast concrete basement (Cast walls, floor and ceiling). The wall needs to provide some isolation from one area (pottery/messy activities) to another (Protools mixdown room).
At the top of the wall the builder has had to go round various obstructions because the ceiling has downstands and stuff, and in places the gap between the top of the last row and the ceiling was too narrow (2 inches) for him to get mortar and part blocks in to fill the whole wall width, so he has filled in the edges of the remaining gap with 1 inch thick cutoff strips of block leaving a void above the middle of the wall. In other places he has just pushed some mortar into the gap (1 inch), and there are some cracks (1-2mm) where it doesnt quite reach the ceiling leaving audible gaps across the wall top in a couple of places.
What should I do to seal the remaining gaps?
In the places where there is a void in the top of the wall (between the facing strips of cut block), should it be filled with something, or will the additional loss be insignificant ? If so does it need to be something solid like fire mortar, or is expanding foam sufficient ?
Thanks
Phil
At the top of the wall the builder has had to go round various obstructions because the ceiling has downstands and stuff, and in places the gap between the top of the last row and the ceiling was too narrow (2 inches) for him to get mortar and part blocks in to fill the whole wall width, so he has filled in the edges of the remaining gap with 1 inch thick cutoff strips of block leaving a void above the middle of the wall. In other places he has just pushed some mortar into the gap (1 inch), and there are some cracks (1-2mm) where it doesnt quite reach the ceiling leaving audible gaps across the wall top in a couple of places.
What should I do to seal the remaining gaps?
In the places where there is a void in the top of the wall (between the facing strips of cut block), should it be filled with something, or will the additional loss be insignificant ? If so does it need to be something solid like fire mortar, or is expanding foam sufficient ?
Thanks
Phil