I assume 3 4 inch but there are many types brands to choose from.
Wood for attic floor.
Limit attic flooring if you don t need additional storage think of flooring an area less than the entire attic such as a small section around the attic door opening.
You ll have to construct a wooden frame or sub floor with boards 16 inches apart to provide extra support for the floor.
But before even they can start on a job that involves altering your home s structure they ll.
Sistering is the process of adding a new joist next to each existing joist.
First you ll need to measure the area you want to floor so you can calculate how much wood you ll require.
What size plywood for an attic floor.
To floor an attic you ll need to install a sub floor for support before laying your plywood floor.
Plywood flooring thickness is important for proper weight distribution.
It s possible to create a solid floor without investing a lot of money.
Strengthening attic joists for live loads by sistering.
My attic is located above my garage and currently the former owner had random pieces of plywood placed up there.
Be cautioned though that even with insulation hardwood flooring will cause a lot of foot traffic noise to the floor below.
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 storage might be a good idea but other issues such as insulation joist spacing and intended usage should be taken into consideration.
If the attic joists are not adequate one way to strengthen the floor for live loads is to sister the old joists.
I wanted to add more plywood to the area and wanted to know if any specific type i should use.
You can for instance use recycled materials.
Use 1 foot wide boards in pine or spruce to make quick work of putting down a floor.
1 x 6 3 spruce is a step up from pallet quality wood but makes a fine usable floor in an unfinished attic space.
Some screwed others not.
If your intent is to use the attic for a purpose other than storage you will need to consider a more finished look.
Modifying an attic floor s joist system is a job for the pros.