Is there a simple way to lower 0.5 square meters of concrete by 2mm?

Home Improvement Asked on January 3, 2022

When I did concreting to raise the floor in my bathroom by 15cm, I accidentally created a bump of about 0.5 square meter, which is about 2mm higher than the rest of the raised floor level.

I’m looking for a simple way to reduce the concrete level there.

I was thinking of using a rubbing brick, but I don’t want to buy one if would be hopeless.

2 Answers

Having ground a LOT of concrete with a rubbing brick (I have personally nearly worn one out), it won't be useless.

It will be relatively quiet, effective, and inexpensive; it will probably take less time than a trip to a tool rental store and back again to get a noisy, potentially dusty (or flinging cooling water mixed with dust) alternative for this small adjustment to a small area. It will certainly cost less.

Answered by Ecnerwal on January 3, 2022

The easiest way is with an angle grinder and a concrete surfacing disk, these use carbide blocks or diamond impregnated ones that grind the surface.

2mm is not a huge amount but enough at 1/2 meter square that doing it by hand will take a really long time, using a surfacing disk is cleaner and easier than masonry grinding disks

Amazon has one similar to what I have used on small jobs (4-1/2” angle grinder) Search for grinding wheels for concrete and masonry the more segments the disk has the better the finish and longer it will last.

After surfacing the surface is usually much smoother and looks different I have used a strong muriatic acid wash to “rough up” the surface.

Answered by Ed Beal on January 3, 2022

Add your own answers!

Related Questions

Patching drywall seams

1  Asked on February 7, 2021 by user2716454


Extend direct burial electrical cable

1  Asked on February 7, 2021 by aleks-g


4yr old heat pump doesn’t label 24v C wire

1  Asked on February 7, 2021 by faux-fire


Leaking PVC pipe & joist notch

1  Asked on February 7, 2021


Can a crack in a sink be fixed?

1  Asked on February 7, 2021


Charging a battery bank with Solar Cells

0  Asked on February 7, 2021 by danfy


Insulating shower exterior wall

1  Asked on February 7, 2021 by jake-schmitz


Single Ground Wire Run Under Floor Joists

1  Asked on February 7, 2021 by senfo


Building a load bearing wall

0  Asked on February 7, 2021 by sharon-hill


Is chert a suitable base for a concrete driveway?

3  Asked on February 7, 2021 by barbarossa


Laundry Sink Drains Slowly

2  Asked on February 7, 2021 by obligong36


Air Conditioner – water standing in condenser housing

1  Asked on February 6, 2021 by joseph-filip


Adjusting an ac blower motor

0  Asked on February 6, 2021


Ask a Question

Get help from others!

© 2023 All rights reserved. Sites we Love: PCI Database, UKBizDB, Menu Kuliner, Sharing RPP