Build an attic walkway above the insulation attics are often left bare with exposed wood framing elements and insulation creating a somewhat hostile environment.
Attic walkway above insulation.
The blown in insulation can be blown right over the ductwork.
This is because the horizontal chords are the strongest part of the attic.
An attic catwalk gives you a margin of safety when you are in the attic.
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The floor must extend beyond the insulation so that the insulation is properly covered.
An attic walkway never trumps the safety and structural integrity of the house.
However if you need to make it narrower i would recommend standing some unfaced blanket insulation on end along the edges of the walkway to hold the loose.
Standard joist spacing for the installation of attic flooring materials is 16 inches on center oc meaning the distance from the center of one joist to the center of the next joist is 16 inches.
The lumber should be wide enough to extend above the level of the fiberglass insulation when.
Cut either 2 by 4 inch or 2 by 6 inch lumber into lengths that match the width of the plywood.
I would recommend fiberglass blown in insulation rather than cellulose because it is not conducive to insects.
If you can make the walkway 2 wide it most likely would not be necessary.
Our cable and internet company agreed.
Because of this the space is able to supporting heavy loads.
The attic walkway is constructed so that sits above the horizontal chords of your attic.
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