I'm leaning towards it being a time- and materials-efficient way to fill the gap. Bricks were recycled from kitchen extension that was coming down. The new extension will have one brick wall but the rest will be wood. I've raised the finish with the architect, who's not worried. But I'll certainly raise it with the builder and just check that he's aware that this sort of finish on exposed brickwork would be a very big problem. I don't think that would ever happen, but for peace of mind I'll raise it.
I'm leaning towards it being a time- and materials-efficient way to fill the gap. Bricks were recycled from kitchen extension that was coming down. The new extension will have one brick wall but the rest will be wood. I've raised the finish with the architect, who's not worried. But I'll certainly raise it with the builder and just check that he's aware that this sort of finish on exposed brickwork would be a very big problem. I don't think that would ever happen, but for peace of mind I'll raise it.