Not generally important for a hole in the roof that will be covered with dicor sealant or silicone sealant but important when drilling a hole all the way through the wall.
Where to drill through motorhome roof.
Drilling holes into our rv roof to run solar wires down inside solar vlog e6 full time rv living duration.
Test mount your device with only 2 screws to make sure all functions correct and fit.
Therefore i had to drill a hole.
Drilling all the way through a wall or ceiling will cause some level of splintering or otherwise a rough surface around the hole exterior.
The roof outside will generally require a flat spot for the gland.
Also consider making a pad or nest with decor or true rtv.
I know i know i said drill a hole if you have other access like a rooftop refrigerator vent by all means use it but i did not.
Cable access hole through rv roof how to solar duration.
Rather than drilling a hole and schmucking a big messy glob of sealant around it you can create a weather proof entry port.
Using a small drill bit drill a pilot hole from inside the rv and confirm the correct location of the hole on the roof if you have a rubber roof cut away a small round section of the rubber membrane just big enough to keep the hole bit from grabbing the membrane drill a 1 hole from the roof.
Set back in place and pencil mark outline.
Inside a cupboard or adjacent trunking.
Take wire to probe through hole to confirm clearance and make sure nothing there.
You want to avoid a wire coming through your roof and end up dangling from your ceiling so try to line up your exterior opening with an interior wall inside of a cabinet under a bench or bed etc.
You will need to drill a hole in the roof of the rv large enough to run the wires inside.
Use a cable glad box where you have drilled the cables thro the roof and lots of sealant.