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How thick do I need substructure elements for cladding metal siding 2-storey house?

How thick should the substructure elements be for metal siding on a 7-meter-high house?

So that the structure does not sag under the weight of the siding. I mean thick enough. (I understand that the thicker the better).

1) The suspension? 0.65, 0.80 or 1.00 m?

2) Profile? 0.5 or 0.65 mm?

• metal siding