And while loosely guiding the bit with one hand apply even pressure with the other holding the drill while running it.
Running wires through a roof.
If drilling up through the ceiling expect to pass through a thin coat of plaster and 5 8 of sheet rock and 1 2 inch 1 3 cm of strapping to which the sheet rock is secured.
Organizing roof wires into plastic flex tubing screwing to roof and sealing before it rains.
Additionally if you ever need to redo the roof it will be a pain to deal with the wires that are now in the way.
To run the wires inside rigid conduit you ll need a hacksaw a pipe bender capable of bending 1 2 in.
Please refer to these above options as a guide only.
Running wires inside rigid conduit.
The best way is to go around the roof not through it.
Drilling through the roof.
As soon as you have a hole you are providing a path for water.
I did a painstaking process of trying to wire up a new power panel in our rv.
You can seal it but it s always going to be a weak spot.
Better to come out of wall then go up to the roof.
Be sure to check out the latest gear i use on my adventures.
This is the least favorable option as it is not reversible.
Protect the wall with a thin piece of cardboard etc.
If the sites that you want to run wire to are on the outside of the house you should not need to drill a new hole.