The insulation should fit snugly against the subfloor and between the joists.
How to install insulation in attic floor.
Make sure each run contacts the insulation you installed at the header band joists.
To build a catwalk you would usually elevate a section of the framing perhaps with 2x6s installed at 90 degrees to the joists and you would install osb or plywood on top of the elevated framing.
Attic insulation between roof trusses.
If using insulation with a vapor retardant facing install the material with the vapor retardant side down.
1 put on work gloves safety glasses and a dust mask before entering the attic.
You ll have to construct a wooden frame or sub floor with boards 16 inches apart to provide extra support for the floor.
Even easier you can also use a prefabricated attic floor kit designed specifically to raise the attic floor above the insulation.
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 light storage you can install inch plywood or.
To install insulation batts and blankets.
Start at one edge of the crawlspace and install the insulation between the floor joists.
If using faced insulation keep the paper vapor retarder facing up and against the subfloor.
Build up the height of the joists prior to installing flooring when the insulation reaches the tops of the joists.
To floor an attic you ll need to install a sub floor for support before laying your plywood 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.
If you need regular access to your attic it makes sense to build a catwalk before you insulate the floor of your attic.