>>2908318
>what's that fellow european? you need to add a new electrical circuit in your house?
>here, let me just grab the 'wall cutting saw'. make sure you put plastic over literally everything in the room that you don't want covered in concrete dust.

Properly build house has ductwork for cables with plenty of spare room, so you just pull new cables thru existing ductwork. It's actually less work than putting a cable into a typical american drywall.
The slit cutting only really occures for the ductwork when the house is being build.

>no, cutting a 4" groove into a masonry wall doesn't affect it's structural integrity at all

Typical walls here are made from very porous and hollow brick for insulation (both sound and thermal) qualities. The mortar used to close cable slits will be stronger than the brick was.

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>what's that fellow european? you need to add a new electrical circuit in your house?>here, let me just grab the 'wall cutting…

>what's that fellow european? you need to add a new electrical circuit in your house?
>here, let me just grab the 'wall cutting…