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Kitchen Bench - Height allowance of bench between a join

I would like to know the allowable Australian Standard to height variation on a kitchen benchtop between a join.

Our bench which is only 7mm in height and sits on a 33mm substrate is uneven between one of the two joins.

As you can see in the attached photo we've put a spirit level on the join to show how it's not flush.

The join is on a standard 600mm benchtop and the height variation starts approx 15mm from the benchtop edge and all the way to tiles.



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