For 23 32 inch thick panels the joists should be at.
Sub floor different heights.
For this reason a sturdy subfloor that doesn t flex is very important.
Panel systems are also thinner than a sleeper floor so they add less height to the floor assembly an important benefit in height challenged basement rooms.
If you have a concrete slab floor the slab may be considered the subfloor.
For 19 32 inch thick panels the joists should be 20 inches on center.
Subfloor panels offer much easier installation than the traditional technique of nailing down 2x4 sleepers over the concrete and covering them with plywood.
This is me thinking out loud.
Subfloor thickness and floor height differences.
The subfloor is the bottom most layer and it rests on the joists.
If the existing sub floor is 3 4 thick solid and flat with no deflection between the joists when walked on and the floor joists are spaced 16 inches or closer you may be able to run the hardwood flooring parallel with the floor joists to obtain a desired look.
What i m missing is experience to tell which aspects are more important than others.
Commercial floor installers deal with differing floor heights with different techniques.
The tile council of north america tcna calls for a subfloor of 19 32 inch tongue and groove plywood to be installed over wood joists spaced 16 inches on center with a 1 8 inch gap between sheets.
Osb can be used for subfloors although it is not as common as cdx.
Surprisingly they are not nearly as strong as ceramic tiles.
Typically made of plywood or osb and ranging in thickness from 19 32 to 1 1 8 thick the subfloor is truly structural second only to joists in this respect.
Some build a ramp under the shorter surface and skip the transition strip but ramps break down over time.
This means that no matter what we add to the kitchen floor the height will be significantly different higher than adjoining rooms.
This should be followed by a second layer of 15 32 inch thick plywood installed with a 1 4 inch gap between sheets.