Drilling through external house wall

[garrymum]

Hi

What is the best way? Adding an external security light. Is it best to go from the outside, roughly estimated where the cable entry will be (want it in a top corner or a built in wardrobe)?

Or, drill from the inside at the desired location?

Thanks

 

[comms]

If you have a desired location inside the house where you want the cable to exit through the wall, drill from inside to outside otherwise pound to a pinch of S*** it'll be miles away from where you want it (been there done that )

 

[garrymum]

Thanks for replying - just wary about shattering the brick when coming through.

 

[comms]

Use hammer through to the cavity then if the brick work is soft enough take the hammer off.
Or
Use a small masonary bit on hammer all the way through then go up a size with the drill bit this will lessen the flaking to the external brick work.

 

[Cremeegg]

To avoid bursting the brick on the outside - use little pressure - let the drill do the work - and use a smaller drill size first then use a larger one. May take a little longer but gives a cleaner breakout.

 

[bernardgreen]

And slope the hole slightly so the outside is lower than the inside. Reduces chance of water getting to the inside wall.

If you can drill all the way with a small drill then make the larger hole from the oustside into the cavity reduce break of brick. Then do the same from the inside.