I have built a (classic) grill with concrete blocks. I used mortar class A for the construction but later understood that class B should have been used. What could happen because of this action? Is there such a big difference for such a small "construction"? The grill is built on a solid concrete slab, so it "stands safely."
Step 2 involves possibly building a semi-circular arch (roof) with 9 cm leca. Should I then use class B mortar?
