It is not a good idea.
Pouring concrete against siding.
Concrete should never be poured up against steel siding and or trim.
I would advise locating a vinyl siding company and getting them to break some scraps that they have laying around about an inch higher than the concrete will be poured and as far out from the house.
The best thing to do and it s the code in va is to put aluminum coil in between the wood and the concrete.
You can but you should put expansion board there.
Moisture can accumulate in concrete and then absorb into the wood and if this.
I would advise locating a vinyl siding company and getting them to break some scraps that they ve laying around about an inch much higher than the concrete will be poured and as far out from the house as the scraps will go.
In addition when the concrete expand you want to.
It s never going to be a good idea to pour a concrete porch or set of stairs next to wood siding or structural framing.