ᐅ Sealing a garage concrete floor

Created on: 12 Apr 2016 00:00
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kernm23
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kernm23
12 Apr 2016 00:00
I have had two precast concrete garages for a week now. I am considering sealing the floor to make it more resistant to dirt and stains.

Would you recommend sealing?

Which type of sealant would you suggest?

What do you think about potassium water glass?
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Bieber0815
11 Jul 2016 22:13
We have a precast concrete garage from Rekers. I want to seal the floor. From what I have learned, such a sealant should be resistant to
- oil, diesel, gasoline
- (mild) acids and alkalis
- plasticizers (from car tires)
Additionally, the coating should be vapor permeable (to prevent rising moisture).

The preferred products appear to be two-component epoxy coating systems. These are commonly sold as "2K garage sealers," "2K floor sealers," or "2K coatings" (generally: water-based two-component epoxy resin sealers). A typical application system usually includes:
- primer
- 1 to 2 coats
- topcoat (sealer)

Optionally, quartz sand or glass beads can be added into the top layer as an anti-slip additive. Also optionally, colored chips can be sprinkled into the topcoat (resulting in a surface that is not plain gray but black/white or multicolored speckled).

Besides epoxy resin dispersions, there are also acrylic-based ones (less common) and single-component floor or concrete paints (simpler, more affordable). I am not familiar with the former or could not find reliable information, while the latter generally lack the resistances mentioned above.

Potassium water glass seems less suitable for floors (or: secondary compared to the solutions mentioned above).

Questions for the community:
- Have you had any experience with specific products from hardware stores?
- How many layers did you apply?
- Did you use anti-slip additives?
One0011 Jul 2016 23:58
Search function "Epoxy resin"
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Bieber0815
12 Jul 2016 06:57
One00 schrieb:
Search function "epoxy resin"

- Here, https://www.hausbau-forum.de/threads/epoxidharzboden-auf-betonestrich.4017/page-2#post-141426, you described your basement floor, but without the messy details (the rest of the thread is about living areas ...)
- Here, https://www.hausbau-forum.de/threads/epoxidharz-Garage.7691, the question was asked before, but without a comprehensive answer.

It’s not like I haven’t already searched ...
One0012 Jul 2016 11:36
Due to the stress caused by car tires and especially the small stones in the tread, I would recommend using a thick coating in the garage instead of just a paint. This is naturally more expensive but also much more durable.
The application is quite simple, as I described in the other thread, provided that safety regulations are followed.
I’ll send you a private message with the details of what I ordered.