Tool Guide for Cast-In-Place Concrete Worktops
- Brockit Pro
- Mar 31
- 2 min read
There are many different tools used when pouring a concrete countertop. For best results, you should have a clear understanding about what each tool is and how it is used.
The most common type of float for a concrete countertop is the Magnesium float. This is used about 30-60 minutes after the pour. You will get most of your smoothing done with the float. It will also allow you to pull the cream to the surface which will be needed in your final finish.
You will know it’s time to use the float when the concrete starts to look dull and dry. If the concrete starts to look dull and dry again after your first float but it’s still too soft to trowel, it’s ok to float it again.
The finishing trowel is the last tool you will use until the concrete is hard.
This is used to close off the surface of the cream that was left porous by the float. It will help you achieve a very smooth final finished surface. The concrete should look dull and dry and should be fairly set, before you use the finishing trowel.
Test this by pushing your finger down into the concrete, with a little bit of pressure - it shouldn’t leave any imprint.
If you use the steel trowel when the concrete is too wet, you can end up with surface problems.
It’s important that you sand your concrete worktop before applying sealer.
We recommend that you sand using an angle grinder and dust extraction shroud to reduce dust creation.
Do not use anything higher than a 220/320 grit paper. You can continue to polish higher but keep in mind that some stains and sealers won’t adhere to highly polished concrete.
It's important that you have the proper tools and know the correct way to use them if you hope to be successful in pouring a concrete countertop. If you aren’t sure about anything mentioned here, please feel free to contact us.
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