installing an attic floor over cellulous ...???

I have some attic space I would like to use for storage.
It is not finished at all with no floor. The insulation
is the blown cellulous stuff. The house is new <2 years
old.

How can I install a floor over the cellulous? Do I need
to be concerned with compressing it down? How should I
attach the plywood to the floor beams? Can I cover the
entire attic floor? (anything I should not cover?)

Thanks!

Chris

 

Hello
First what size is the joist you have to intall the floor on? the ceiling joist was sized to hold up the sheet rock insolation and you moving around on them not to install a floor on. This will over load the joist, crack sheetrock and pop the sheetrock nails on the ceiling below. remeber the electrical wiring is on top of the joist, if you were to notch it into the joist you would weaken them even more
and you can not lay the plywood floor over them, heat ducts? Plumbing vents, and how do you hope to go in and out of the attic?
Insolation when it become to compacted 12" to 6 1/2" will have very litle R value you need to have air space to keep any R value. if compacted it will be like any other soled material like wood, heat/cold will go right through it that is why you need 2x6 wall for R-19 Think about it and do the right things to make it right. at some point you will need a building permit....