First you ll need to measure the area you want to floor so you can calculate how much wood you ll require.
Floor attic weight.
Even easier you can also use a prefabricated attic floor kit designed specifically to raise the attic floor above the insulation.
Installing attic flooring for light storage only.
Joist dimensions are only part of the equation.
If your attic joists won t bear the weight necessary to finish out a living space but the engineer cleared them to support floor decking for.
Attic joists that are made from 2x8s may be acceptable for building your attic floor but because every room is variable there are no absolutes.
The decision regarding the thickness of plywood to use for the subfloor in the attic has a lot to do with how you intend to use the attic and it also.
Attic joists for live loads.
You ll have to construct a wooden frame or sub floor with boards 16 inches apart to provide extra support for the floor.
However if you keep the storage weight to a minimum you may be able to build a storage platform above the insulation by attaching supporting beams to the sides of the trusses.