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My experience: They will crack, generally only hairline but you need to be aware. They also stain if not sealed properly, which will need redoing to keep the floor durable. But yeah, they look great. Be aware that if you're looking to have one put down you'll need to lay a new concrete slab in the area with 75mm insulation (and usually underfloor heating). You'll need to allow 80-100mm for the polished concrete too.
The worktops, same advice really. Long-term it will probably pick up stains, but they can be more forgiving aesthetically than say marble if they stain.
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Yeah, obviously super hard surface that will not forgive any dropped breakables. A friend who owns a bar/coffee shop/game room/italian club was going to redo his floor and after pulling up the old lino decided to just polish and finish the concrete (some nasty commercial finish). Worked out really well IMO, but you have to accept the inevitable staining and decibels may need to be calmed.
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If you are having the floor installed as part of a larger building project I would recommend insisting that your builder subcontract the work to a specialist. Lazenby do a great final product. Sounds common sense but I've heard of contractors saying they can do it and botching it.
Also, second @Prole. 's comment on allowing for full floor build up.
There are a few micro cement products out there that seem to be gaining popularity as alternatives to the full shebang. Topcret/biotech microstuk etc which can come out beautifully but depend entirely on the quality of the substrate.
I’m duplicating this from the homeowner thread because I don’t know where to put it. If the mods want to delete one, so be it.
Has anybody had polished concrete floors put in in a kitchen.
I love the way they look and they appear easy to keep clean, work well with underfloor heating etc.
Just wondering how they wear and look after a few years. Is there much maintenance involved?
Same question for concrete worktops.