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DIY Trade Industry

Project Overview

In this guide, we show you how to prepare a concrete floor for tiling, and how to lay tiles to produce a professional showroom-quality finish. 


For grinding a floor you’ll need a:

For smaller areas like a bathroom or laundry, you’ll only need the smaller grinder edger and the hand grinder.

Safety equipment is a must, including goggles, dust mask and ear muffs. 

If you have any questions about our equipment or need advice on the best equipment to use, the team at your local Kennards Hire branch should be able to help you.

For more information get in touch with your local branch today.

Step By Step

Measure for the floor
Remove the high spots
Use the handheld grinder for tight places
Use the grinder edger along the walls
Measure for the floor
Once you have your equipment together, start by measuring the floor for the tiles (or paint or sealant).

Measure the volume of the floor, length multiplied by width. If you have objects like kitchen islands, you need to break it down into smaller rectangles, get their area and add them all up. Then talk to your tile supplier about the best materials for the job.

Tip: When buying tiles allow 10% extra for breakages.

Remove the high spots
Grind the top of the concrete down to remove any high spots, such as where two concrete slabs meet, and to remove any old paint from the surface.

For high spots, use the smaller grinder edger first, then use the larger grinder to even out the surface.

Grind the entire surface using long, parallel passes with the large grinder.

Once that’s done, go over it again, but this time following lines perpendicular to the first direction.

Make sure you vacuum the floor after you complete a section to remove any dust from the surface and so you can see how well you are progressing.
Use the handheld grinder for tight places
Use the handheld grinder to get under any cabinets or other places where the larger machines can’t reach. When using the hand grinder, make sure the disc is horizontal to the floor, so you are not gouging into the concrete with the edge of the disc.
Use the grinder edger along the walls
This grinder has an edger shroud, which can be swivelled so that it slides along the edge of the wall, giving you a closer finish.

Once the concrete surface is level and you’ve cleaned up by running the vacuum over it again, you’re ready for tiling.

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