Is it structurally safe to drill a small hole approximately 3/4” where roof joists meet to run wire on top of ridge beam for some lights and a fan? It will look better then tuning the wire along the side of the ridge beam.

enter image description here

Drill hole (red dots)

enter image description here

  • 1
    The proper way to hang electrical wire is to run conduit attached to the ridge beam, or joists, not drilling structural elements at the support point.
    – r13
    Feb 10, 2022 at 0:57
  • Preferably nice looking wire mould instead of ugly grey Sched 40 PVC or galvanized conduit. Unless, of course, "Industrial" is the look one is going for.
    – FreeMan
    Feb 10, 2022 at 14:30

1 Answer 1


Yes, you can drill a hole 3/4” in diameter vertically through the roof joists where they meet at the ridge.

Drilling a couple of holes vertically through the ridge beam could damage the beam structurally depending on the load and location of the holes. I would not drill in the middle third of the ridge beam without someone (architect or structural engineer) checking it out.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.