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I’d just like to check that it’s normal to fit blocks with bits missing from the edges into B&B floor. Will the builder just stick some mortar into these? If so, will it matter if the mortar slops down to form a bridge to the wet ground, about 250mm below the beams? Once the B&B floor is done, it will likely be many months before we start building the walls. Should I tell the builder to just leave the holes, in case his weak mix (relative to concrete blocks) deteriorates through the winter, & we can fill the holes when we’re ready to build up the floor? How will the small rectangular holes by the sleeper wall be filled?
