As nickblake says run cables on top of ceiling joists but route in a low part of the loft i e.
Running wires through your attic.
Although it s rarely a problem in an accessible basement or attic if your home is built over a crawlspace or has a low narrow attic it can be hard to find the hole you ve drilled in the wall plate.
The following links will assist you with your electrical question.
If you can run it across by stapling it to the rafters you can avoid the insulation thing.
If the attic is inaccessible you have less a worry about protecting the wires than you would if it were a storage area.
Where the cables can t be walked on.
When running along the joists keep them 2 above the ceiling.
The attic wiring should be protected and secured to ceiling joists or other wood structural supports.
Find your attic access.
Quickly fishing wires from the attic.
You simply mount a small plastic clip to every other joist.
This is usually a moveable piece of drywall or plywood that covers a rectangular hole in.
After you窶况e run the wires through the clips you snap a plastic cover over the entire assembly.
Even you are the first time to run security camera cabling you can install your security camera wiring through attics walls for your front back door reception room front back yard shop floor bedroom garage warehouse basement parking lot farm entrance even upstairs etc.
Start by inserting a long wire through the hole you just drilled a disassembled wire coat hanger works well.
Measure the distance between the two sites you want to run wire between and make sure you will have enough wire.
Do not drill them through the joists or rafters.
How to run wire through an attic step 1.