ᐅ Core drilling inside the house – does it create a lot of dust indoors?

@Knallkörper.. Thanks.. my day is made 🙂

Knallkörper schrieb:
KLB is something like Ytong, right?

KlimaLeichtBlock is a pumice concrete block.

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We have a similar situation. We need to drill through concrete from the inside to the outside. Nothing with a large diameter. A LAN cable without a connector needs to pass through. The area has already been painted, and there is a window and a chimney nearby. The contractor plans to drill using a Hilti. Same question: is this feasible, or will everything be ruined afterwards?

I just did this yesterday—drilling a 10mm (0.4 inch) hole through reinforced concrete with a hammer drill. It definitely creates more visible dust than drilling a hole for kitchen cabinets in porous clay blocks. I held a vacuum cleaner underneath and ended up with a grey stain on the wallpaper, but it was washable.

As long as no water is involved, it’s all manageable.

Edit: Larger diameters than 10mm (0.4 inch) in reinforced concrete are almost always drilled wet with a core drill, but for your Cat cable, 8mm (0.3 inch) is probably sufficient?

What kind of reinforced concrete is this? I can only drill up to 2cm (0.8 inches) deep into our ceiling with a hammer drill.

Hello,

77.willo schrieb:
I can only drill about 2cm (1 inch) deep into our ceiling with a hammer drill.

Get yourself some proper drill bits... Seriously, using a regular hammer drill on concrete is tough, but it’s doable with _good_ drill bits. Even better is the combination of a rotary hammer plus quality drill bits. That makes working with concrete actually enjoyable!

Happy Easter!

Best regards,

Andreas