The best you can hope for is perhaps to lay some thin plywood platforms down over the bottom truss members and use them to store lightweight items.
Best material to use for attic flooring.
Then you ll need to build a grid like structure that can hold up the plywood flooring.
If your intent is to use the attic for a purpose other than storage you will need to consider a more finished look.
Adding a floor to an attic can increase storage space or create a new room.
Be cautioned though that even with insulation hardwood flooring will cause a lot of foot traffic noise to the floor below.
It s possible to create a solid floor without investing a lot of money.
Weight concerns if you do have an existing walk up attic with traditional floor framing the principle concern when converting the space into a living area will be weight.
An attic conversion is a great way to expand your home s living space but best to leave the work to a licensed contractor.
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 depends on the spacing of the ceiling joists.
Use 1 foot wide boards in pine or spruce to make quick work of putting down a floor.