ᐅ Precast Concrete Garage Cable Entry

Hello everyone,

I made the mistake of having a prefabricated garage from Zapf installed.

Now I want to install a few cables (5x16sqmm, ethernet, satellite) and I'm wondering: where? Can I simply cut two 32mm (1¼ inch) core holes in the floor, or will the Zapf garage collapse? Zapf only provides limited information on this.

Maybe someone has faced a similar problem before?

Thank you and best regards,
Kevin

May I ask why you consider the garage from Zapf to be a mistake? How is the electrical wiring generally routed into the garage?

The manufacturer explicitly prohibits this! You have to drill through the wall using progressively larger drill bits. Get a stud finder because of the reinforcement and have someone press a board against the opposite side. It’s better to use a rotary hammer rather than a hammer drill.

Just search for "ZAPF_Datenblatt_Bohrungen.pdf" on Google—there’s a lot of information on this topic.

I would also be interested to know why you are so dissatisfied.

And aren’t there usually holes at the front of the base for routing cables?

Hello everyone,

this "ZAPF_Datenblatt_Bohrungen" has already helped me – meaning I can find the reinforcement in the exterior wall and drill through it without damaging the reinforcement. Drilling through the floor slab would have just looked a bit awkward 😀

There are only holes in the floor directly below the sockets (3x1.5mm² (0.0059 inches²)) to supply them with power – you definitely can’t access them afterward because the cables were installed before the building was erected.

Regarding the Zapf topic in general:
Aside from all the money and time I wasted because Zapf can’t measure correctly and I had to chisel away the neighbor’s wall, the price-performance ratio is really poor. I have the "large garage," which isn’t tall enough for a VW van due to the clearance height – deflating the tires every time is not really fun either. Then you pay outrageous amounts for "special services," for example, the surcharge for a gate in anthracite instead of white is just as high as the gate alone costs from the manufacturer. They even ordered a crane for the assembly, but the installer said on site that it could have been avoided. Normally, I’m not really demanding, but this was really below the lowest level.

Best regards & thanks
Kevin

KevinHoehne schrieb:

Hello everyone,

this "ZAPF_Datenblatt_Bohrungen" has already helped me – meaning I look for the reinforcement in the exterior wall and drill through it without damaging the reinforcement. Drilling through the concrete slab just wouldn’t have looked very good 😀

In the floor, there are only holes directly below the electrical outlets (3x1.5mm²) so they can be powered – you definitely can’t access these later because the cables were installed during the assembly.

Regarding the Zapf topic in general:
Aside from the large amount of money and effort I wasted because Zapf can’t measure properly and I had to chisel away the neighbor’s wall, the value for money is really poor. I have the "large garage," in which not even a VW bus fits due to the clearance height – releasing air from the tires every time isn’t exactly enjoyable either. Then you pay outrageous amounts for "special features," for example, the gate in anthracite costs just as much extra as the gate itself from the manufacturer does in white. Then they ordered a crane for the installation, and the installer said on site it wasn’t even necessary... Normally, I’m not very demanding, but this was really the lowest standard.

Best regards & thanks
Kevin

Interesting... for us, Zapf is by far the best offer. Hundhausen and others are all more expensive...