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Frequently Asked Questions
- A: A matte (up to 100 grit) or even low sheen (400 grit) can be used outdoors, but polished concrete with a high sheen is not recommended.
Q: Can I use polished concrete outdoors? - Concrete | Polishing Natural Stone
Other FAQs :
- Q: Is polished concrete good for the environment?
- A: Polished concrete is one of the most sustainable flooring options today. Polishing the structural slab of a building, instead of harvesting resources to cover it, prevents waste and is extremely long lasting.
- Q: Should I seal my polished concrete?
- A: Concrete surfaces are subject to deterioration and degradation of appearance through traffic, UV rays, moisture, rain, chemicals, and other impurities such as oil, gas, grease, acids and salt. This can easily result in common problems such as cracking, pitting, scaling, spalling, delamination, dusting, discolouration, efflorescence, salt damage, etc. Concrete sealing offers excellent maintenance benefits when quality products are used such as Australia's Deepshield™ deep impregnating sealers.
- Q: How soon can I use the floor after the polishing?
- A: Polished concrete flooring can be walked on during the grind and polish process. There is no 'cure' time since it is a mechanical process. If a sealer is used, 4 hours is typically required before foot traffic can be resumed.
- Q: How slippery is polished concrete?
- A: Many suspect a highly polished concrete floor would become more slippery-and thus more of a problem. Contrary to common perception, the degree of polish or shine is not directly related to slip resistance. Just because polished concrete is shiny doesn't mean it is slippery. If the right processes are applied both internally and/or externally, testing has shown that polished concrete will meet or exceed Australia/New Zealand standards for slip resistance. (Please bear in mind any floor finish can become slippery when wet.)
- Q: Is it possible to apply penetrating concrete sealers over existing topical sealers?
- A: No, it is not possible to apply penetrating concrete sealers over existing topical sealers. Topical sealers create a membrane or film on the surface of the concrete, forming a barrier that prevents the penetrating sealers from effectively absorbing into the concrete. Therefore, before applying a penetrating sealer, it is necessary to remove any existing topical sealer to ensure proper penetration and adhesion of the new sealer. This preparation step ensures that the penetrating sealer can effectively provide the desired protection and enhance the durability of the concrete surface.
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