I'm running ethernet cable for some security cameras, and I have to drill a hole from my loft to the outer wall for a power-over-ethernet setup. The challenge is that I'm working at a height, almost at the limit of my ladder's extension, making it unsafe to drill from the outside. I can easily reach and drill from inside the loft, but I'm worried about causing blowout damage to the brick wall when the drill bit comes through. The inner wall is breeze block, and the outer one is regular brick. The hole diameter I need is 10mm, so any tips to prevent damage during drilling would be really appreciated!
3 Answers
If you can, consider two people for this job. One could start drilling and then stop when it feels like the drill will come through the outside layer, while the other person braces the brick with wood. Just make sure to communicate so you don’t accidentally drill through someone's hand!
It's a good idea to drill a very small pilot hole straight through first. Then, use your larger drill bit from both sides—this way, you minimize the risk of damaging the brick when you breach it. Take it slow when you’re almost through and avoid using a hammer drill setting for this part.
Start by using a small masonry bit to create a pilot hole from the inside, then gradually increase the bit size. As you get close to breaking through to the outer brick, try to drill from both sides. If possible, having something like a piece of wood braced against the outer wall can really help prevent blowout when the larger bit comes through.
Absolutely! Just make sure you apply light pressure when you're nearing the end, and if you have someone on the other side, they can help stabilize.
That’s a smart approach! Just be careful and keep a close eye on each other's positions while you're drilling.