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The Artist Formerly Known as Audrey


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« on: Sunday, June 3, 2018, 09:45:46 »

Iíve just Ďlaidí a concrete floor to a new porch but the first load wasnít quite enough to cover the area. Where Iíve added a second bit the join isnít quite level. How do you go about sanding down concrete - preferably without having to hire some machine?
« Last Edit: Sunday, June 3, 2018, 09:48:12 by Audrey's Bellend » Logged
4D


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« Reply #1 on: Sunday, June 3, 2018, 09:59:03 »

Are you saying that the floor is too high where the join is? When laying concrete floors you'd normally use a long level object to pat and smooth it to get a level finish, did you do that?
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The Artist Formerly Known as Audrey


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« Reply #2 on: Sunday, June 3, 2018, 10:03:42 »

Itís only a thin screed really. The first lot dried and set before I laid the second lot. There is a ridge between the 2.
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Legends-Lounge


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« Reply #3 on: Sunday, June 3, 2018, 10:25:06 »

Itís only a thin screed really. The first lot dried and set before I laid the second lot. There is a ridge between the 2.

There are a few remedies. Iíll assume that this ridge is not to pronounced weíre talking only millimetres? Also what are the dimensions of this porch?
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« Reply #4 on: Sunday, June 3, 2018, 10:58:22 »

You can get a silicone carbide disc to "sand" it down. They sell ones you can put in a drill if you don't have the other tools, grinder, disc sander etc

Wear a mask, it will be dusty!
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« Reply #5 on: Sunday, June 3, 2018, 11:11:30 »

You can get a silicone carbide disc to "sand" it down. They sell ones you can put in a drill if you don't have the other tools, grinder, disc sander etc

Wear a mask, it will be dusty!

FGS, nnnnnooooooooo!
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The Artist Formerly Known as Audrey


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« Reply #6 on: Sunday, June 3, 2018, 11:12:16 »

Thanks for that. The silicone pad sounds like it will do the job. The porch isnít big - 2m x 11/2m and the ridge isnít that pronounced but Iím laying tiles so need the floor as flat as poss.
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« Reply #7 on: Sunday, June 3, 2018, 12:53:38 »

Thanks for that. The silicone pad sounds like it will do the job. The porch isnít big - 2m x 11/2m and the ridge isnít that pronounced but Iím laying tiles so need the floor as flat as poss.
In that case a floor levelling compound is your answer. It does exactly as is says. You can buy ready mixed or powdered. Like water it finds its own level and dries rockard... you may need a cold chisel to bring the ridge down a bit first if needs be but the compound will just fill in any depressions.
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