As such a patio falls under the irc recommendations on grading and drainage.
Hpatio how far belwo siding.
Six inches would not be too far.
When it is higher from the ground splashing water onto the wood is minimized.
Wood siding should be 4 or so from the ground whether that be soil or solid surface.
There s no magic number but i would recommend a minimum of 2 in.
Moisture could build up and leak its way into your indoor flooring or between and under the siding inviting bigger problems.
I opted for 3 1 2 in.
This allows the patio to be constructed 1 2 away from the sheathing giving an air gap that will allow moisture to drain and evaporate.
Below the top of the foundation but the lower the vinyl siding is installed the better.
It protects the sheathing from rain snow and pests.
That means that the patio must slope away from your house at least 1 4 inch per foot for at least the first 10 feet from the house exterior.
All hardscape within 10 feet of a building must slope away from the building with a minimum slope of 2 percent.
The wood is not sitting in a moist or wet condition so it is not wicking moisture.
The further the better.
By installing the properly flashed deck at a level slightly below the home s flooring you can ensure that any water flows down and away from your primary structure.
The bottom of the starter strip the part the bottom panel hooks on to should be at least 1 in.
From the top of the decking to the bottom of the patio door threshold.