Hello everyone,
At the moment, I only have the bare concrete slab in my 34 m2 (366 sq ft) garage. I originally wanted to have an epoxy resin coating applied on top. The goal is to keep the build-up height as low as possible since the garage isn’t very tall. Unfortunately, the slab was not smoothed or finished and is quite uneven. I suspect that with this option, I wouldn’t be able to avoid shot blasting or something similar, which would make the costs quite high, right? I assume that a leveling compound won’t hold up under the conditions and the point loads from a car and would crack?
If I decide to have a screed installed instead, the question of the final surface treatment arises again. To my knowledge, these options exist:
The goal is a clean, easy-to-clean surface that stays reasonably affordable.
At the moment, I only have the bare concrete slab in my 34 m2 (366 sq ft) garage. I originally wanted to have an epoxy resin coating applied on top. The goal is to keep the build-up height as low as possible since the garage isn’t very tall. Unfortunately, the slab was not smoothed or finished and is quite uneven. I suspect that with this option, I wouldn’t be able to avoid shot blasting or something similar, which would make the costs quite high, right? I assume that a leveling compound won’t hold up under the conditions and the point loads from a car and would crack?
If I decide to have a screed installed instead, the question of the final surface treatment arises again. To my knowledge, these options exist:
- Epoxy resin coating (as originally planned) – Probably the best and most durable solution, but also quite expensive.
- Concrete paint only – Simple and inexpensive, but not very resistant.
- Tiles – Likely a mid-range price. Durable enough as long as you don’t drop large wrenches, garden tools, or similar heavy items.
- The screed installer offered a Korodur surface hardening treatment. According to him, it is not 100% smooth, but at least very durable.
The goal is a clean, easy-to-clean surface that stays reasonably affordable.
Hi,
your gut feeling is right—the uneven slab is the main cost driver here, not the epoxy itself. Without shot blasting or at least milling, you won’t get proper adhesion, and yes, that quickly approaches 70€/m2 (per square meter) plus coating, which can be a tough pill to swallow. Using leveling compound under vehicle loads is tricky; there are suitable systems, but with point loads over 2 tons, it looks good in theory but tends to crack in practice. Screed with Korodur is the classic garage compromise: technically robust, visually so-so, and not really sealed—oil and tire wear still get through. Tiles work as long as the substrate is really suitable; otherwise, they’ll eventually crack, even if that’s often downplayed. Concrete paint is honestly cosmetic—you’ll see wear after 2 to 3 years. If the build-up height is critical, I’d recommend preparing carefully once and applying a thin coating rather than adding a 5cm (2 inch) screed layer. How much real height clearance do you still have before the door—3cm (1 inch) or 6cm (2.5 inches)?
Good luck!!
your gut feeling is right—the uneven slab is the main cost driver here, not the epoxy itself. Without shot blasting or at least milling, you won’t get proper adhesion, and yes, that quickly approaches 70€/m2 (per square meter) plus coating, which can be a tough pill to swallow. Using leveling compound under vehicle loads is tricky; there are suitable systems, but with point loads over 2 tons, it looks good in theory but tends to crack in practice. Screed with Korodur is the classic garage compromise: technically robust, visually so-so, and not really sealed—oil and tire wear still get through. Tiles work as long as the substrate is really suitable; otherwise, they’ll eventually crack, even if that’s often downplayed. Concrete paint is honestly cosmetic—you’ll see wear after 2 to 3 years. If the build-up height is critical, I’d recommend preparing carefully once and applying a thin coating rather than adding a 5cm (2 inch) screed layer. How much real height clearance do you still have before the door—3cm (1 inch) or 6cm (2.5 inches)?
Good luck!!
The gate is not installed yet. Regarding the height, I am referring to the clear opening height and the internal height of the garage, as it is, as mentioned, not very tall.
In fact, I received a first quote of 1200€ net for shot blasting immediately after my request yesterday. The screed quotes were in a similar range.
In fact, I received a first quote of 1200€ net for shot blasting immediately after my request yesterday. The screed quotes were in a similar range.
jolt schrieb:
I currently only have the bare concrete slab in the 34 m2 (365 sq ft) garage. I originally planned to have an epoxy resin coating applied on it. Even if not strictly necessary, I consider such a coating sufficient; no car needs to be parked with micrometer precision. It might be possible to add a layer of glass coating beneath the resin coating, or alternatively, use cast asphalt right away.
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