Step 1. Measure the amount of tilt, preferably using a tape measure with legible graduations! This is my fifth course above the oven floor, and the outside face will require lifting around 51mm (2”) to achieve vertical butt faces and eliminate inverted ‘Vees’ between bricks. I’ve set up a spreadsheet to calculate this height, course by course, but it’s always good to check on the oven.
Step 2. Cut wedge to suit:
and check it’s OK.
