My drywall ceiling is attached to 2x6 joists 16" OC. Then, a 10" air gap above these joists are the 2x6 rafters 32" OC, for my flat roof just above. Even though the home is 1955, I have knob & tube throughout this attic space which I'd like to replace. Also, I'd like to improve the current insulation which is blown-in cellulose only about 4" deep (you can see the ceiling joists if I pop my head up).
I'm thinking of installing some 3" pipe hangers such as below, on the underside of the rafters, to help with running 12/2 NM-B romex cables for now and in the future. I'd put one above the light fixture and one near the attic access hatch (for each room).
- Is there a better/standard option rather than these pipe hangers to accomplish my goal?
- Am I overthinking this and I should just let the romex be buried by the new/additional blown-in insulation?
Footnote: The new wire which replaces the k&t will be run from the basement below, where the main panel is, and only switch-to-light wires will be in the attic. And I'll leave the old k&t in place, but disconnected.
Footnote 2: I'm very tempted to completely rip off the ceiling drywall and do batt insulation or spray foam, but I fear the cost/time will be prohibitive.