You ll have to construct a wooden frame or sub floor with boards 16 inches apart to provide extra support for the floor.
Attic insulation and flooring.
But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates.
Because the simplest and cheapest way to insulate an attic is to add material to 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.
These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation.
Plan to pull up the flooring and layer new.
Even easier you can also use a prefabricated attic floor kit designed specifically to raise the attic floor above the insulation.
Stop using your attic for storage.
Attic flooring consists of materials as basic as sheets of plywood as well as more elaborate interlocking floor systems.
Start with the attic floor.
First you ll need to measure the area you want to floor so you can calculate how much wood you ll require.
Flooring all of your attic or large areas of your attic is a little different in the sense that you have to deal with more obstacles mainly your attic insulation wiring and pipes therefore we recommend raising your attic floor level with thick batons this allows for extra insulation if required.
This type of attic flooring will provide storage space for overflow items and seasonal items but it won t pass muster as a living space floor.
How to lay attic flooring on top of fiberglass insulation.
Attic insulation between roof trusses.
To floor an attic you ll need to install a sub floor for support before laying your plywood floor.